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1.
Journal of Sustainability Science and Management ; 17(8):146-168, 2022.
Article in English | Scopus | ID: covidwho-2040705

ABSTRACT

At the height of the COVID-19 pandemic, the Malaysian government took precautionary action to minimise the spread of the coronavirus with the implementation of the Movement Control Order. This move led to employees in non-essential sectors, including the construction sector, being required to work from home. This study aims to investigate the challenges of working from home and the mitigation actions to overcome the challenges from the perspective of quantity surveyors. A questionnaire survey was used for the data collection exercise. The responses of 360 participants were recorded and analysed. The data collected were analysed using the Statistical Package for the Social Sciences (SPSS) software using the frequencies, percentage and mean analysis. Cronbach’s alpha was used to measure the reliability of the questionnaire survey. The study found 11 working-from-home challenges from a quantity surveyors’ perspective, with overworking as the main challenge. Furthermore, 10 mitigation actions to overcome the challenges were discovered. Creating a dedicated workspace ranked first on the list. This study could provide insights into identifying the challenges and the mitigation actions to overcome said challenges. It would be beneficial for relevant stakeholders to look into these concerns and acknowledge them accordingly. This is also in line with the Sustainable Development Goal 8, which promotes a sustainable future for all, inclusive of economic growth, full and productive employment and decent work. © Penerbit UMT

2.
Environmental Health ; 21:1-13, 2022.
Article in English | ProQuest Central | ID: covidwho-2038766

ABSTRACT

Artisanal and small-scale mining (ASM) takes place under extreme conditions with a lack of occupational health and safety. As the demand for metals is increasing due in part to their extensive use in ‘green technologies’ for climate change mitigation, the negative environmental and occupational consequences of mining practices are disproportionately felt in low- and middle-income countries. The Collegium Ramazzini statement on ASM presents updated information on its neglected health hazards that include multiple toxic hazards, most notably mercury, lead, cyanide, arsenic, cadmium, and cobalt, as well as physical hazards, most notably airborne dust and noise, and the high risk of infectious diseases. These hazards affect both miners and mining communities as working and living spaces are rarely separated. The impact on children and women is often severe, including hazardous exposures during the child-bearing age and pregnancies, and the risk of child labor. We suggest strategies for the mitigation of these hazards and classify those according to primordial, primary, secondary, and tertiary prevention. Further, we identify knowledge gaps and issue recommendations for international, national, and local governments, metal purchasers, and employers are given. With this statement, the Collegium Ramazzini calls for the extension of efforts to minimize all hazards that confront ASM miners and their families.

3.
BMC Public Health ; 22:1-15, 2022.
Article in English | ProQuest Central | ID: covidwho-2038699

ABSTRACT

Objective Latino populations in the United States are disproportionately affected by substance use, HIV/AIDS, violence, and mental health issues (SAVAME). A growing body of evidence demonstrates the syndemic nature of SAVAME and the need for integrated strategies to reduce their impact. This study sought to understand the network of SAVAME services for Latino immigrants in Philadelphia to inform future interventions for SAVAME prevention and mitigation. Methodology Key informant interviews (N = 30) were conducted with providers working in Latino-serving organizations providing SAVAME services. Interviews were analyzed using thematic coding and grounded theory. Results Latino-serving providers perceived a large need for, and important limitations in the availability, accessibility, and adequacy of SAVAME services for Latino immigrants. Gaps were seen as especially acute for mental health and substance use services, partly because of insufficient funding for these services. Latino immigrants’ lack of health insurance, immigration status, limited English proficiency (LEP), stigma surrounding SAVAME issues, and limited knowledge of available services were identified as significant barriers preventing access to services. Providers noted that scarcity of well-trained, culturally competent, and ethnically concordant providers reduced the adequacy of SAVAME services for Latino immigrant clients. The small size, low levels of infrastructure, and limited capacity were reported as additional factors limiting the ability of many Latino-serving organizations to adopt a syndemic approach in the prevention and treatment of SAVAME services. Conclusions The results call for changes in the structure of funding streams and communitywide strategies to foster collaboration across SAVAME providers working with Latino immigrant clients.

4.
IOP Conference Series. Earth and Environmental Science ; 1082(1):012021, 2022.
Article in English | ProQuest Central | ID: covidwho-2037344

ABSTRACT

Flood is acknowledged as the most common natural disaster in several parts of the globe. For Malaysia, flood is considered as the most frequent natural disaster, with the frequency of at least once a year. The risks of flood can be seen through property loss and damages, infrastructure casualties, and disruption to socio-economic activities. Adding to that, Malaysia also faced the flood during the pandemic when it hit several states, namely Pahang, Johor, and Kelantan, during the monsoon season in 2020 and 2021, amid the rising cases of Covid-19. The ongoing COVID-19 pandemic has posed significant challenges for disaster response, calling for the “new norms” to be quickly established for better disaster risk reduction. Several mitigation strategies have been taken by the government to reduce the risks of floods in Malaysia. As office buildings possess important roles in delivering effective services to the public while maintaining their critical documents, this paper focuses on providing related literature on building resilience. Having an early understanding of the core elements of office building resilience in dual disaster challenges will provide the basis for further investigation in the later stage of data collection.

5.
IOP Conference Series. Earth and Environmental Science ; 1078(1):012138, 2022.
Article in English | ProQuest Central | ID: covidwho-2037336

ABSTRACT

This study aims to present an overview of the impact of COVID-19 on urban heat challenges. First, this study developed a framework for understanding the linkages between COVID-19 and urban heat challenges. In particular, the framework considered COVID-19 pandemic in aspects of anti-pandemic measures (restriction, protection, individual consciousness) and anti-pandemic periods (lockdown and normalization), and analyzed urban heat challenges in aspects hazards, mitigation, and adaptation and hazards. Built upon this, this study collected the evidence of the impact of the COVID-19 on urban heat challenges in air quality, energy, economy, heat illnesses, and adaptation and mitigation strategies. This study will allow government authorities and experts in various fields to recognize the increasing vulnerability of entire cities to high temperatures as a result of current anti-epidemic strategies. Meanwhile, it provides a reference to the development of a robust, effective, and stable system for addressing urban heat challenges during public health events.

6.
IOP Conference Series. Earth and Environmental Science ; 1039(1):012013, 2022.
Article in English | ProQuest Central | ID: covidwho-2037319

ABSTRACT

Appropriate strategies on urban climate mitigation should be formulated by considering the physical morphology of the urban landscape. This study aimed to investigate, analyze, and promote possible strategies to mitigate Jakarta’s urban heat island (UHI) phenomena. Jakarta’s local climate zone (LCZ) was classified into 17 classes using Landsat 8 data and the random forest method. Land surface temperature (LST) characteristic in each LCZ class was analyzed from 2018, 2019 and 2020. The result revealed that most of the local climate zone in Jakarta is dominated by LCZ 6 (open low-rise) and LCZ 3 (compact low-rise), which is the typical residential area in Jakarta. However, the mean LST in 2018, 2019 and 2020 showed that LCZ 3 (compact low-rise) and LCZ 7 (lightweight low-rise) are the areas that were most likely causing high surface temperature with the highest UHI intensity. During the COVID-19 pandemic in 2020, LST in Jakarta decreased drastically in some parts of the area, especially in public facility such as airport. However, the LST value in low-rise areas (LCZ 3 and LCZ 7) remains higher than the other LCZ classes. Materials of the building and land cover play a significant role in raising the land surface temperature. Therefore, mitigation strategies for urban heat islands in Jakarta should be focused on such particular areas mentioned.

7.
Studies in Big Data ; 111:41-68, 2022.
Article in English | Scopus | ID: covidwho-2034997

ABSTRACT

This chapter is about analyzing cybersecurity risks and their mitigation for work-from-home considering the COVID-19 situation, concerning the tools and techniques being used to run the organization’s operations. This chapter will help you understand the utilizations of online stages as a home office, and it will clear all the issues that emerge during this pandemic circumstance. Everything is discussed in insights concerning the dangers of tools and applications, which has picked up the business's goal shockingly. This is the worst pandemic that ever happened to humanity because every company and department suffers from this tragedy. Moreover, cybercriminals are constantly looking for new attack vectors. Already they have attempted to exploit the servers of many corona research centers. Also, they have strived to take over video conferencing platforms like zoom. Alleviation of those all-outsider applications and their answers are covered in this study work, which will assist you to make your home environment and your home office safe. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

8.
NeuroQuantology ; 20(10):4049-4060, 2022.
Article in English | EMBASE | ID: covidwho-2033478

ABSTRACT

The current pandemic situation has led researchers to rethink the conventional agricultural process. Nowadays, conventional agricultural processes are being replaced with an advanced Internet of Things (IoT)-based technology to reduce mass gathering in fields. Moreover, the advancement of technology is essential to feed the 7 billion people around the world. Thus, researchers developed several IoT devices that come under the Consumer IoT or CIoT devices which help the farmers to monitor farm performance and activities remotely. During the remote monitoring processes, the wireless CIoT devices gained privacy and security threats which became a major concern. Thus, besides gaining a competitive advantage in agriculture, minimising privacy and security threats is also essential in this pandemic. This research is going to understand the recent CIoT devices, their privacy and data protection approaches, challenges and mitigation strategies. The researchers have conducted secondary research using available journal articles and authentic internet sources belonging to the past five years. After that, other journal articles have been accessed as well to draw an effective discussion. Findings showed that privacy, data protection and security are the three major concerns that can be addressed by using an alternative wireless system. Blockchain and “Low-power Wide Area Network” are two other approaches that can be used as well. Other challenges include the cost of CIoT devices that can be addressed by purchasing low-cost sensors and microcontrollers.

9.
Social Sciences & Humanities Open ; : 100336, 2022.
Article in English | ScienceDirect | ID: covidwho-2031695

ABSTRACT

The infection with coronavirus disease (COVID-19) had an extremely negative influence on public health and the global economy. Covid-19 infection is more likely to affect the elderly than younger people, and pre-existing medical conditions, such as cardiovascular disease, diabetes, high blood pressure, and respiratory diseases, might lead to death due to COVID-19 infection. In low-income, developing, and highly dense countries like Bangladesh, the aging population is particularly vulnerable to the pandemic due to inadequate health services, socio-economic circumstances, environmental settings, religious and cultural beliefs, personal cleanliness habits, and a contemplative approach to infectious disease. Besides, recent cyclones and floods have combined effects on older people's increasing vulnerabilities. In this study, we reviewed and examined the vulnerabilities of older adults to the COVID-19 outbreak in Bangladesh. Different mitigation measures are discussed to protect the elderly from the adverse effect of the pandemic. This study proposes several steps to reinforce the commitment to social care and health care services to guarantee well-being, encourage preventive measures, and increase access to older people's health services in Bangladesh. The core findings will provide a valuable guideline for older adults, scientists, and policymakers to take effective long-term measures to mitigate the pandemic's risk.

10.
One Earth ; 5(9):1042-1054, 2022.
Article in English | ScienceDirect | ID: covidwho-2031613

ABSTRACT

Summary To meet the Paris temperature targets and recover from the effects of the pandemic, many countries have launched economic recovery plans, including specific elements to promote clean energy technologies and green jobs. However, how to successfully manage investment portfolios of green recovery packages to optimize both climate mitigation and employment benefits remains unclear. Here, we use three energy-economic models, combined with a portfolio analysis approach, to find optimal low-carbon technology subsidy combinations in six major emitting regions: Canada, China, the European Union (EU), India, Japan, and the United States (US). We find that, although numerical estimates differ given different model structures, results consistently show that a >50% investment in solar photovoltaics is more likely to enable CO2 emissions reduction and green jobs, particularly in the EU and China. Our study illustrates the importance of strategically managing investment portfolios in recovery packages to enable optimal outcomes and foster a post-pandemic green economy.

11.
Med ; 2022.
Article in English | ScienceDirect | ID: covidwho-2031561

ABSTRACT

Background Universities are vulnerable to infectious disease outbreaks, making them ideal environments to study transmission dynamics and evaluate mitigation and surveillance measures. Here, we analyze multimodal COVID-19-associated data collected during the 2020-2021 academic year at Colorado Mesa University and introduce a SARS-CoV-2 surveillance and response framework. Methods We analyzed epidemiological and sociobehavioral data (demographics, contact tracing, and WiFi-based co-location data) alongside pathogen surveillance data (wastewater and diagnostic testing, and viral genomic sequencing of wastewater and clinical specimens) to characterize outbreak dynamics and inform policy. We applied relative risk, multiple linear regression, and social network assortativity to identify attributes or behaviors associated with contracting SARS-CoV-2. To characterize SARS-CoV-2 transmission, we used viral sequencing, phylogenomic tools, and functional assays. Findings Athletes, particularly those on high-contact teams, had the highest risk of testing positive. On average, individuals who tested positive had more contacts and longer interaction durations than individuals who never tested positive. The distribution of contacts per individual was overdispersed, though not as overdispersed as the distribution of phylogenomic descendants. Corroboration via technical replicates was essential for identification of wastewater mutations. Conclusion Based on our findings, we formulate a framework that combines tools into an integrated disease surveillance program, which can be implemented in other congregate settings with limited resources.

12.
Economic Analysis and Policy ; 2022.
Article in English | ScienceDirect | ID: covidwho-2031241

ABSTRACT

This paper examines the impact of digital inclusive finance (DIF) on the subsistence consumption of rural households in China. We find that rural residents in areas with well-developed DIF tend to have greater subsistence consumption. Channel analyses show that such a fact can be explained by the income growth effect and vulnerability mitigation effect created by DIF. The income growth effect is manifested as that the development of DIF promotes rural residents’ income by stimulating either their entrepreneurship to earn operational income or their rural-to-urban migration to earn wage income. Meanwhile, the vulnerability mitigation effect uncovers that DIF could reduce rural residents’ future income uncertainty by alleviating the impact of exogenous shocks. Furthermore, we apply Lasso algorithms to predict expected consumption, and find that the development of DIF is associated with a higher probability of rural households’ overconsumption, and that such side effect mainly occurs among individuals with weak time preferences. Therefore, the development of DIF should be promoted, because doing so is beneficial to increasing rural residents’ economic resilience and building an inclusive, sustainable and prosperous society in the post-COVID-19 era.

13.
ADVANCES IN DATA SCIENCE AND INTELLIGENT DATA COMMUNICATION TECHNOLOGIES FOR COVID-19: Innovative Solutions Against COVID-19 ; 378:77-91, 2022.
Article in English | Web of Science | ID: covidwho-2030859

ABSTRACT

System of systems is a compilation of systems that focus on a specific task or a system by combining multiple resources to create complicated task-oriented or dedicated systems that combine their resources and skills to develop a new, more complicated system with higher capability and performance than the individual systems. The paper will define the System of Systems in terms of its architecture and the importance of having a System of System;then, it will define Covid-19's spread and effect on economics. After that, it will describe System of Systems in the medical sector as a case study in terms of mitigating Covid-19 and the challenges. Finally, the solutions are provided, where different applications can be combined to operate in real-time and assist the government agencies and medical staff in operating effectively.

14.
People and Nature ; 2022.
Article in English | Scopus | ID: covidwho-2027392

ABSTRACT

The emergence of infectious diseases, such as COVID-19, impacts livelihood strategies and conservation tools reliant on human-wildlife interactions, such as wildlife-based tourism and research. This is particularly relevant to great ape conservation, as humans and great apes are susceptible to being infected by similar pathogens. Evidence-based strategies are required to prevent infectious disease transmission to great apes and people involved in, or living close to, tourism sites. The development of disease-safe recommendations and their effective operationalisation require an understanding of what affects visitor compliance. Based on an international sample of past (N = 420) and potential future visitors (N = 569) to wild great ape tourism sites in Africa, we used an online questionnaire to characterise visitors' practices, assess expectations (e.g. about proximity to great apes) and identify key factors related to potential compliance with disease mitigation measures. This was implemented adapting a framework from health literature (the Health Belief Model;HBM), particularly focused on reducing COVID-19 transmission at an early stage of the pandemic. Visitors expressed less willingness to being vaccinated against COVID-19 (which, at the time our survey was conducted, had only just started being administered to very high-risk groups), wearing a facemask during trekking (although willing when viewing the apes) and quarantine after international travel before visiting great apes. Region of nationality, expectations about the visitor experience and perceived effectiveness of specific measures were important factors explaining variation in potential compliance across multiple behaviours. By gaining a better understanding of what fosters compliance with disease mitigation measures, we obtained insights that are essential for assessing feasibility, facilitating effective communication, and guiding implementation at great ape tourism sites with importance not only for COVID-19 but also for other infectious diseases more broadly, particularly at early stages of future pandemics. While requiring adaptive management as situations evolve (e.g. vaccination becoming more widely accessible), these will contribute towards a more sustainable visitor experience that can effectively deliver positive outcomes for people and biodiversity. Read the free Plain Language Summary for this article on the Journal blog. © 2022 The Authors. People and Nature published by John Wiley & Sons Ltd on behalf of British Ecological Society.

15.
Atmospheric Chemistry and Physics ; 22(16):10919-10935, 2022.
Article in English | ProQuest Central | ID: covidwho-2025098

ABSTRACT

Around 5 % of anthropogenic radiative forcing (RF) is attributed to aviation CO2 and non-CO2 impacts. This paper quantifies aviation emissions and contrail climate forcing in the North Atlantic, one of the world's busiest air traffic corridors, over 5 years. Between 2016 and 2019, growth in CO2 (+3.13% yr-1) and nitrogen oxide emissions (+4.5 % yr-1) outpaced increases in flight distance (+3.05 % yr-1). Over the same period, the annual mean contrail cirrus net RF (204–280 mW m-2) showed significant inter-annual variability caused by variations in meteorology. Responses to COVID-19 caused significant reductions in flight distance travelled (-66%), CO2 emissions (-71%) and the contrail net RF (-66%) compared with the prior 1-year period. Around 12 % of all flights in this region cause 80 % of the annual contrail energy forcing, and the factors associated with strongly warming/cooling contrails include seasonal changes in meteorology and radiation, time of day, background cloud fields, and engine-specific non-volatile particulate matter (nvPM) emissions. Strongly warming contrails in this region are generally formed in wintertime, close to the tropopause, between 15:00 and 04:00 UTC, and above low-level clouds. The most strongly cooling contrails occur in the spring, in the upper troposphere, between 06:00 and 15:00 UTC, and without lower-level clouds. Uncertainty in the contrail cirrus net RF (216–238 mW m-2) arising from meteorology in 2019 is smaller than the inter-annual variability. The contrail RF estimates are most sensitive to the humidity fields, followed by nvPM emissions and aircraft mass assumptions. This longitudinal evaluation of aviation contrail impacts contributes a quantified understanding of inter-annual variability and informs strategies for contrail mitigation.

16.
Applied Sciences ; 12(16):8120, 2022.
Article in English | ProQuest Central | ID: covidwho-2023098

ABSTRACT

Featured ApplicationThe use of these indices, which make it possible to compare the environmental efficiency between hospitals with similar characteristics, will facilitate the adoption of measures, the development of impact mitigation plans, and the implementation of good practices in environmental topics that will guide the health sector toward sustainability scenarios.In the past decades, the use of indices and indicators to report on the environmental performance of organisations has increased exponentially. However, the available studies did not address the topic of obtaining indicators that show the environmental behaviour of the health sector. The main objective of this research, therefore, was aimed at the calculation of environmental efficiency indices in the hospital sector, taking a regional hospital as a case study and considering the environmental aspects identified during the development of its healthcare activity in 2019. The results obtained provided information on the potential environmental impacts triggered by every aspect of the operation of a hospital in the course of its activities that focus on patient care. The results demonstrated that the aspects related to transportation of patients, workers, and materials had the greatest impact on the global environmental indices we calculated. For the environmental efficiency indices of hospital activities, the most significant environmental aspects were materials consumption and waste generation.

17.
Front Psychiatry ; 13:938111, 2022.
Article in English | PubMed | ID: covidwho-2022908

ABSTRACT

OBJECTIVE: We aim to examine infection risk and vaccine status of COVID-19 in attention deficit and hyperactivity disorder and evaluate the impact of demographic, clinical, and COVID-19-related factors on the infection status and behavioral avoidance of COVID-19. METHODS: This cross-sectional study assessed adults with attention deficit and hyperactivity disorder recruited from an outpatient psychiatry clinic. Patients and healthy controls completed a survey on sociodemographic data, COVID-19 infection status, and vaccine status. COVID-19 Disease Perception Scale, COVID-19 Avoidance Attitudes Scale, Attitudes toward COVID-19 Vaccine Scale, Adult Attention Deficit and Hyperactivity Disorder Self-report Screening Scale for DSM-5, Adult Attention Deficit and Hyperactivity Disorder Self-Report Scale Symptoms Checklist, Patient Health Questionnaire-9, and State-Trait Anxiety Inventory were applied. RESULTS: Ninety patients and 40 healthy controls participated. Patients did not differ from controls in COVID-19 infection and vaccine status, and behavioral avoidance of COVID-19. No demographic and clinical factor significantly affected the COVID-19 infection status. Patients scored higher than controls in the perception of COVID-19 as contagious (p = 0.038), cognitive avoidance of COVID-19 (p = 0.008), and positive attitudes toward the COVID-19 vaccine (p = 0.024). After adjustment of possible factors, a positive perception of the COVID-19 vaccine and a perception of COVID-19 as dangerous were the two factors significantly affecting behavioral avoidance of COVID-19 [R (2) = 0. 17, F(2) = 13.189, p < 0.0001]. CONCLUSION: Infection and vaccine status of COVID-19 in patients did not significantly differ from controls. No demographic and clinical factor significantly affected the COVID-19 infection status. Approximately four-fifths of the patients were fully vaccinated as recommended by national and global health organizations. This has increased the knowledge base showing that the COVID-19 vaccine is acceptable and receiving the vaccine is endorsed by ADHD patients. Attention deficit and hyperactivity disorder itself may provoke no kind of mental disturbance in sense of perception of the danger of this disease. Our findings have increased the knowledge base showing that the COVID-19 vaccine is acceptable and the actual practice of receiving the vaccine is endorsed in this population. Our message for practice would be to take into account not only the core symptoms and the comorbidities of the disorder but also the perception of the disease while exploring its link with COVID-19.

18.
Case Studies in the Environment ; 6(1), 2022.
Article in English | Scopus | ID: covidwho-2022069

ABSTRACT

Carbon management strategies are crucial for businesses to decrease their contribution to climate change. The aviation industry currently contributes 2% of global carbon dioxide (CO2) emissions. As part of the aviation industry, Qantas Group has enacted ambitious carbon management goals to reduce its carbon emissions. As of the 2020 financial year, the company's Scope 1 emissions are 1,919,212 tonnes of carbon dioxide emissions (t CO2-e) and its Scope 2 emissions are 4,642 t CO2-e. The company has reduced its emissions through strategies, such as carbon offsetting, sustainable fuel investment, increasing fuel efficiency and reducing its landfill contribution. The Group's carbon management goals were examined through a framework, which found these goals to be absolute, broad scoped, ambitious, and set over a long-time frame. These are reflective of providing a successful environmental performance and mitigating its climate risk. Although Qantas has made significant progress in its carbon management goals, there is still much to be improved upon and the effects of the COVID-19 pandemic remain to be seen. The Group still requires extensive alterations to its practices to achieve its net-zero emissions goal. © 2022 by the Regents of the University of California.

19.
Journal of Environmental and Public Health ; 2022, 2022.
Article in English | ProQuest Central | ID: covidwho-2020519

ABSTRACT

Climate change is a serious threat to humankind. As broad public participation is required in climate change mitigation efforts, it is critical to understand how the public talk about climate change on social media. This study sets out to increase the understanding of Chinese public awareness of climate change, as well as explore the potential and limitations of social media for public engagement on climate change issues. It examines the Chinese public’s discussion about climate change on social media Weibo during the last six years through data mining and text analysis. The analyses include volume analysis, keyword extraction, topic modeling, and sentiment analysis. The results indicate three main aspects of public awareness and concern regarding climate change. First, public awareness of climate change is growing in China. Second, the sentiment analysis shows that the general sentiment toward climate change is becoming more positive over time. Third, based on keyword extraction and topic modeling, the discussion on climate change shows a top-down perspective, an optimistic economic perspective, and a preference for celebrity content. The study provides a comprehensive picture of Chinese social media users’ views on climate change issues, based on large-scale research data. It contributes to a better understanding of what Chinese people think about climate change on social media generally. These findings may provide government and environmental organizations with valuable insights for better climate change campaigns on social media.

20.
Global Change Biology. Bioenergy ; 13(8):1260-1274, 2021.
Article in English | ProQuest Central | ID: covidwho-2019261

ABSTRACT

Tropical and subtropical acidic soils have been well documented as hotspots of global soil nitrogen (N) oxide (i.e., nitrous oxide (N2O) and nitric oxide (NO) emissions). While the effectiveness of possible mitigation options has been extensively examined in croplands, little is known about their effectiveness in reducing N‐oxide emissions from acidic soils of rapidly expanding tea plantations in China. Here, we conducted a 2‐year field experiment to investigate how organic substitution for synthetic fertilizer and biochar amendment affect soil N‐oxide emissions from a subtropical tea plantation. Across the 2‐year measurement period, full organic substitution for synthetic fertilizer significantly increased N2O emissions by an average of 17% while had a lower NO emission compared to synthetic fertilizer alone. Our global meta‐analysis further revealed that full or partial organic fertilizer substitution resulted in a 29% (95% confidence interval: 5%–60%) increase of N2O emissions from acidic soils. In contrast, irrespective of fertilizer type, biochar amendment significantly reduced N2O emissions by 14% in the first but not second experimental year, suggesting a transient effect. The trade‐off effect of full organic substitution on N2O and NO emissions may be attributed to the favorable conditions for N2O production due to the stimulated activity of nitrifiers and denitrifiers. The suppression of N2O emission following biochar amendment was probably due to promoted further reduction of N2O to dinitrogen. The fertilizer‐induced emission factor (EF) of N2O (2.1%) in the tea plantation was greater than the current IPCC default value, but the EF of NO (0.8%) was comparable to the global estimate. Taken together, while biochar amendment could have mitigation potential, cautions are needed when applying organic substitution for synthetic fertilizer as mitigation options for acidic soils as hotspots of N‐oxide emissions.

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