基于遥感与GIS技术的四川省羌活资源适宜性分布研究

羌活是我国中藏羌医药体系中的重要药材,也是我国高原珍稀濒危药材。该文以四川省为例,结合羌活生长的环境因子,选取适宜羌活生长的生态环境指标,利用遥感和GIS技术对川产道地药材羌活的适宜性空间分布进行研究,并结合野外实测进行验证。结果表明:四川省的羌活资源主要分布在川西高山峡谷和川西北高原,适宜性分布面积约为4 145 km²,占该区总面积的2%,其中,黑水县、理县、小金县、康定县等地区的适宜面积均占到了各县面积的2%以上。根据野外实测调研和相关文献资料信息的记载,可以得出通过遥感和GIS技术分析的结果与羌活资源的实际分布地区相符合,说明利用遥感和GIS方法划分羌活资源的适宜性分布区域是可行的,可以为全面调查羌活资源的分布与保护以及对其进行合理的开发利用提供科学依据。

Study on suitable distribution areas of Notopterygium incisum in Sichuan province based on remote sensing and GIS

Notopterygium incisum is the important medicinal materials of the Tibetan-Qiang medical system in China, also one of the rare and endangered medicinal materials in the Plateau areas in the meantime. Taking the planting of in Sichuan province as an example, research on the N. incisum in Sichuan utilize remote sensing and GIS techniques, bind growth environment factor, including height factor, average annual precipitation, average annual temperature, forest information, were chosen according to habitat conditions. And combine field measurement to verify. The results indicate that N. incisum resources in Sichuan province were mainly distributed in the alpine valley and the northwest of the plateau, which suitability distribution areas of 4 145 km2 approximately and accounting for 2% of the total area. Suitability areas accounting for more than 2% of the respective total area in Heishui county, Lixian county, Xiaojin county, Kangding county, ect. According to the field investigation and the related document information record, drawn that the suitability distribution based on RS and GIS were corresponded with the actual distribution areas of N. incisum resources. It's feasible to divide the suitability distribution area of N. incisum using RS and GIS, which will provide a scientific basis for a comprehensive investigation of the distribution as well as its rational exploitation and protection.