基于Maxent和ArcGIS的山茱萸生态适宜性区划研究

通过区划研究,预测山茱萸适宜种植区。通过走访和实地调查,收集山茱萸在全国主产区的样品分布信息。以山茱萸药材主产区14个产地89个采样点为分析基点,利用Maxent和ArcGIS对山茱萸进行生态适宜性研究,分析山茱萸生长地的相关生态因子如气候、地形等。影响山茱萸生长的主要生态因子包括11月降水量、3月降水量、植被类型等9个生态因子,山茱萸生长最适宜区域分布在河南、陕西、浙江、重庆、湖北、四川、安徽、湖南、山东等地,对山茱萸的潜在分布区进行了生长适宜性等级划分,生成山茱萸生长适宜性区划图。应用空间分析技术,阐释了山茱萸最适合生长的自然环境,也为山茱萸的野生抚育、引种栽培及人工规范化种植提供科学依据。

Study on ecological suitability regionalization of Corni Fructus based on Maxent and ArcGIS model

Through planting regionalization the scientific basis for planting area of high-quality medicinal materials was predicted. Through interview investigation and field survey, the distribution information of Corni Fructus in China was collected, and 89 sampling point from 14 producing areas were collected. Climate and topography of Corni Fructus were analyzed, the ecological adaptability of study was conducted based on ArcGIS and Maxent. Different suitability grade at potential areas and regionalization map were formulated. There are nine ecological factors affecting the growth of Corni Fructus, for example precipitation in November and March and vegetation type. The results showed that the most suitable habitats are Henan, Shaanxi, Zhejiang, Chongqing, Hubei, Sichuan, Anhui, Hunan and Shandong province. Using the spatial analysis method, the study not only illustrates the most suitable for the surroundings of Corni Fructus, but also provides a scientific reference for wild resource tending, introduction and cultivation, and artificial planting base and directing production layout.