濒危药用植物蒙古沙冬青的生态适宜性区划

Eco-geographical Division of Endangered Medicinal Plant Ammopiptanthus mongolicus

综合运用实地取样、标本查阅和文献研究等方法,获得蒙古沙冬青(Ammopiptanthus mongolicus)采样点数据,通过运用ArcGIS技术平台,从气候、土壤、地形数据库中提取各样点生态因子,得出其适宜生态因子范围.以此为据,利用中药材产地适宜性分析平台(TCMGIS-Ⅱ)对蒙古沙冬青的生态适宜性区域进行分析.结果表明,蒙古沙冬青的适宜产区(生态相似度≥95%)主要分布于内蒙古、新疆、甘肃、陕西、宁夏等西北干旱地区的7省(区)358县(市),总面积为309 889.2km2.这与历史文献记载及现代引种实践数据相吻合.

The characteristic data of the sampling site of Ammopiptanthus mongolicus was acquired through comprehensive application of the field surveys,specimen examination and literature review and the ecological factors data of each sampling site was extracted from the national geographic,climate and soil type databases of China by using the ArcGIS platform.Based on the investigation and utilizing of TCMGISII which is an improved version of GIS-based program for the distribution prediction of traditional Chinese medicine,the ecological suitability region of A.mongolicus was further analyzed.The results of the study showed that a total area of 358counties of 7provinces in China which covers a land area of 309 889.2km^2,shared similar ecological factors（ecological similarity≥95%）with those of native habitats appropriate for A.mongolicus.The areas are mainly located in Inner Mongolia,Gansu,Ningxia and Shanxi provinces.The finding is consistent with the historical records and the practical data of the introduction of A.mongolicus.