Habitat suitability evaluation for Angelica dahurica planting in Yanting county,Sichuan province based on GIS / 中国中药杂志

It is of great significance to analyze habitable suitability of genuine medicinal materials for Chinese herbal medicine planting according to local environment,for medicinal resources protecting and for reasonable planning introduction. Based on GIS technology,the analytic hierarchy process was applied to analyze the spatial differentiation of habitat suitability of Angelica dahurica in Yanting county of Sichuan province. The evaluation combined local geographical environment characteristics and habitat requirements for A. dahurica planting and adopted the expert experience method to screen out the evaluation index for establishing evaluation system.With the established evaluation system,the index weight of evaluating index was determined by analytic hierarchy process and their grouping values were assigned by Delphi method. The all evaluating index were translated into index distribution maps using Arc GIS software. Using the comprehensive factor weighted evaluating model and spatial index distribution map,the evaluation was obtained by means of the overlay analysis function of Arc GIS 10. 3 software. RESULTS:: showed that A. dahurica had a wide range of suitable planting areas in Yanting county. Highly suitable areas amounted to 165. 01 km2,and mainly distributed in the low hilly area with moderate elevation and fertile soil. Moderately suitable areas amounted to 798. 92 km2 which had extensive distribution in middle and west part of the county. Marginally suitable areas amounted to 0. 33 km2,where the soil was highly viscous with high altitude and low temperature that was not conducive to the growth and development of A. dahurica. Adapting to local conditions and scientific planning plays an important role in the development of local characteristic planting industry of genuine medicinal materials.

Habitat areas extracting of Poria cocos in Anhui based on "3S" technologies / 中国中药杂志

"Adversity" is one primary element that impacts the pharmacology components of authentic Chinese herbal medicine. Knowledge about "adversity" is a precondition of yield estimation, quality monitoring, location selection and the geo-herbalism protection. Used 3S(GIS, RS and GPS) technology to combine multi-source key ecological factors of "Anling", and used parasitic relationships between organisms to extracting its suitable region for the first time. Results showed that the "Anling" were mainly distributed in Dabie coteau. Suitable area amount to 36.8 km², Yuexi, Shucheng, Jinzhai and Qianshan which account for about 93.55% of whole congenial region. The first three accounts for about 80.82%. It was Yuexi that account for 1/3 above especially. Field investigation verify accuracy of extraction about 91.67%, which has confirmed it is feasible that using the relationship between parasitic host and parasitic to extract native environment of parasitic traditional medicine based on 3S technology.