甘肃省淫羊藿生态适宜性评价及种植区划

Ecological Adaptability Evaluation and Planting Division of Epimedium in Gansu Province

笔者在野外调查的基础上,基于生态适宜性评价的基本理论,利用GIS技术、模糊数学等方法,选取8个影响淫羊藿种植分布的潜在因子,构建生态适宜性评价模型,对甘肃省淫羊藿人工仿生种植适宜性分布进行了系统研究。研究结果表明,适宜种植淫羊藿的面积为403.42万hm2,占甘肃省林地总面积的66.07%;主要分布在甘南州、陇南市、兰州市的榆中县兴隆山和七里河区南部的马衔山脉以及定西市岷县、漳县和渭源县部分区域,平凉市华亭县和关山、太统山、崆峒山沿线。通过适宜分区的划分,为甘肃淫羊藿野生变家种提供了理论基础。

On the basis of field investigation and the theory of ecological suitability evaluation, the author used GIS technology and the method of fuzzy mathematics, selected 8 potential factors which affected Epimedium planting distribution, built ecological suitability evaluation model and researched artificial planting suitability distribution of Epimedium in Gansu Province. The results showed that the suitable planting area of Epimedium was 4.0342 million hm^2, accounting for 66.07% of the total area of forest land in Gansu Province; the planting areas were mainly distributed in Gannan, Longnan, Xinglong mountain in Yuzhong county and Maxian mountains in the south of Qilihe district of Lanzhou, and Min county, Zhang county and parts of Weiyuan county of Dingxi, Huating county of Pingliang, and along the route of the Guan-Taitong-Kongtong mountain. Through the appropriate division of planting areas, the author provided theoretical basis for cultivating Epimedium from wild germplasm in Gansu Province.