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1.
Proc Natl Acad Sci U S A ; 114(5): 921-925, 2017 01 31.
Artigo em Inglês | MEDLINE | ID: mdl-28096383

RESUMO

Smallholder agricultural systems, strongly dependent on water resources and investments in shared infrastructure, make a significant contribution to food security in developing countries. These communities are being increasingly integrated into the global economy and are exposed to new global climate-related risks that may affect their willingness to cooperate in community-level collective action problems. We performed field experiments on public goods with private and collective risks in 118 small-scale rice-producing communities in four countries. Our results indicate that increasing the integration of those communities with the broader economic system is associated with lower investments in public goods when facing collective risks. These findings indicate that local public good provision may be negatively affected by collective risks, especially in communities more integrated with the market economy.


Assuntos
Agricultura , Participação da Comunidade , Abastecimento de Alimentos , Adulto , China , Mudança Climática , Colômbia , Humanos , Nepal , Oryza , Risco , Tailândia
2.
Environ Manage ; 46(3): 411-23, 2010 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-20721664

RESUMO

This article assesses the role of local institutions in managing irrigation water use. Fifty irrigation systems in each country were studied in Nepal and Thailand to compare the influence of local institutions on performance of irrigation systems amid changes in external policy and market pressures. Nepal's new irrigation policy after the re-instatement of multiparty democracy in 1990 emphasized participatory irrigation management transferring the management responsibility from state authorities to water users. The water user associations of traditional farmer-managed irrigation systems were formally recognized by requiring registration with related state authorities. In Thailand also government policies encouraged people's participation in irrigation management. Today water users are directly involved in management of even some large irrigation systems at the level of tertiary canals. Traditional communal irrigation systems in northern Thailand received support for system infrastructure improvement but have faced increased interference from government. In Thailand market development supported diversification in farming practices resulting in increased areas under high water-demanding commercial crops in the dry season. In contrast, the command areas of most irrigation systems in Nepal include cereal-based subsistence farming with only one-third having commercial farming. Cropping intensities are higher in Nepal than in Thailand reflecting, in part, differences in availability of land and management. In both countries local institutions play an important role in maintaining the performance of irrigation systems as external drivers and local contexts change. Local institutions have provided alternative options for irrigation water use by mediating external pressures.


Assuntos
Irrigação Agrícola , Agricultura/economia , Conservação dos Recursos Naturais , Política Ambiental , Algoritmos , Produtos Agrícolas , Tomada de Decisões , Nepal , Tailândia
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