Luo Yao, Dong Yong-Bo, Zhu Cong, Peng Wen-Fu, Fang Qing-Mao, Xu Xin-Liang
The Institute of Geography and Resources Science, Sichuan Normal University, Chengdu 610068, China.
Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, Sichuan Normal University, Chengdu 610068, China.
Zhongguo Zhong Yao Za Zhi. 2017 Nov;42(22):4378-4386. doi: 10.19540/j.cnki.cjcmm.2017.0188.
Paris yunnanensis is a kind of rare medicinal herb, having a very high medicinal value. Studying its suitable ecological condition can provide a basis for its rational exploitation, artificial cultivation, and sustainable utilization. A practicable method in this paper has been proposed to research the suitable regional distribution of P. yunnanensis in Sichuan province. By the case study of P. yunnanensis in Sichuan province, and according to related literatures, the suitable ecological condition of P. yunnanensis such as altitude, mean annual temperature (MAT), annual precipitation, regional slope, slope ranges, vegetative cover, and soil types was analyzed following remote sensing (RS) and GIS.The appropriate distribution regionof P. yunnanensis and its area were extracted based on RS and GIS technology,combing with the information of the field validation data. The results showed that the concentrated distribution regions in counties of Sichuan province were, Liangshan prefecture, Aba prefecture, Sertar county of Ganzi prefecture, Panzhihua city, Ya'an city, Chengdu city, Meishan city, Leshan city, Yibin city, Neijiang city, Luzhou city, Bazhong city, Nanchong city, Guangyuan city and other cities and counties area.The suitable distribution area in Sichuan is about 7 338 km², accounting for 3.02% of the total study regional area. The analysis result has high consistency with the filed validation data, and the research method for P. yunnanensis distribution region based onspatial overlay analysis and the extracted the information of land usage and ecological factors following the RS and GIS is reliable.
滇西紫堇是一种珍稀药用植物，具有很高的药用价值。研究其适宜的生态条件可为其合理开发、人工栽培和可持续利用提供依据。本文提出了一种可行的方法来研究滇西紫堇在四川省的适宜区域分布。通过对四川省滇西紫堇的案例研究，并依据相关文献，利用遥感（RS）和地理信息系统（GIS）分析了滇西紫堇适宜的生态条件，如海拔、年平均温度（MAT）、年降水量、区域坡度、坡度范围、植被覆盖度和土壤类型等。基于RS和GIS技术，结合野外验证数据信息，提取了滇西紫堇的适宜分布区域及其面积。结果表明，四川省滇西紫堇的集中分布区域为凉山州、阿坝州、甘孜州色达县、攀枝花市、雅安市、成都市、眉山市、乐山市、宜宾市、内江市、泸州市、巴中市、南充市、广元市等市县区。四川省滇西紫堇的适宜分布面积约为7338平方千米，占研究区域总面积的3.02%。分析结果与野外验证数据具有高度一致性，基于空间叠加分析以及利用RS和GIS提取土地利用和生态因子信息来研究滇西紫堇分布区域的方法是可靠的。
