基于GIS与模糊物元模型的当归潜在生境适宜性区划分析  

Potential Ecological Suitability Regionalization Analysis of Angelica sinensis Based on GIS and Fuzzy Matter Element Model

作　　者：尚忠慧 卫海燕[1] 顾蔚[1] 毛亚娟[1] 朱俐南 桑满杰 

机构地区：[1]陕西师范大学,陕西西安710062

出　　处：《中药材》2015年第7期1370-1374,共5页Journal of Chinese Medicinal Materials

基　　金：国家自然科学基金(31070293);国家"十一五"科技支撑计划(2006BAI06A13-06)

摘　　要：目的:分析当归潜在生境适宜性区划,对保护野生资源、引种栽培选址以及合理生产布局提供依据。方法:依据模糊物元模型建立阿魏酸含量与气候、地形和土壤三大类14个生态因子之间的模糊隶属函数,采用信息熵权法确定评价指标权重,利用GIS空间分析功能区划当归在我国西部十省的潜在生境适宜性空间分布,并量化当归最适生态因子指标范围。结果:研究区当归适宜生长区(高、中适宜生境)面积为306 768.01 km2,占研究区总面积9.64%,主要集中在甘肃东南部、四川北部、云南西北部和西藏东南部高海拔地区。最湿季平均温度、海拔、生长期降水量、年相对湿度、生长期均温、年降水量等生态因子对当归的分布影响最大。结论:基于GIS与模糊物元构建的当归生境适宜性评价模型能准确对我国西部十省当归潜在生境适宜性做出科学综合评价,量化适宜生境面积和空间分布,为其野生资源保护和管理以及引种栽培提供科学数据。Objective： To study the potential ecological suitability regionalization of Angelica sinensis,for protecting wild resources and selecting cultivation location and designing rational production layout. Methods： Based on fuzzy matter element model,the relationship of fuzzy membership function between ferulic acid content and 14 ecological factors,including climate,topography and soil,were established. Then information entropy theory was used to determine the relative importance of each environmental factor,and thus to determine the most limiting habitat criteria. Finally,the probable spatial distribution of Angelica sinensis across ten provinces in Western China was determined based on GIS spatial analysis of habitat conditions. Meanwhile,the optimal index range of ecological factors was quantified. Results： It was showed that the percentage of moderately and highly suitable habitats for Angelica sinensis in the study area was 9. 64%,its area was 306 768. 01 km^2. The moderately and highly suitable habitats were mainly located in the southeast of Gansu and Tibet,the north of Sichuan and the northwest of Yunnan. The results also showed that six dominant ecological factors controlling the distribution of Angelica sinensis. These six dominant features were as follows：（ 1） mean temperature of wettest quarter,（ 2） altitude,（ 3） precipitation of growth,（ 4） annual relative humidity,（ 5） average temperature of growth period,and（ 6） annual precipitation. Conclusion： The habitat suitability assessment model based on GIS and fuzzy matter element model theory can accurately evaluate the habitat suitability of Angelica sinensis,quantify the area of suitable habitat and analyze the spatial distribution. This information is of value to provide insight for choosing the most suitable cultivation sites,as well as the habitat protection zones.

关 键 词：当归 模糊物元模型 GIS 潜在生境适宜性 

分 类 号：R282.71[医药卫生—中药学] Q948.2[医药卫生—中医学]