基于GIS和GPS的秦岭西段庙台槭种群空间分析

庙台槭(Acer miaotaienseP.C.Tsoong)为中国秦巴山区特有种.采用GPS结合ARCVIEW GIS,通过种群调查、空间分析等方法,初步掌握了秦岭西段小陇山林区的庙台槭的主要分布点,分别为观音林场纸庙沟,李子林场长河、东岔林场桃花沟,麦积林场后沟,最大种群位于观音林场.4个分布点间的直线距离最短为8 km,种群间距离大;4个种群点5 km范围的分布总面积307 794 650.24 m2,且主要分布于海拔1 400~1 600 m,沿河谷15°以下的半阳坡地带.

Spatial analysis of Acer miaotaiense populations in the Western Qin Mountains based on GIS and GPS

Acer miaotaiense P.C.Tsoong is one of endemic species to the Qin-Ba Mountainous Region of China.Based on population investigation on the spot,GPS was combined with ARCVIEW GIS and used for spatial analysis of the species populations in accordance with conservation biology.The results showed that four places including Zhimiao Valley of the Guanyin Forest Farm,Changhe Valley of the Lizi Forest Farm,Taohua Valley of the Dongcha Forest Farm and Hougo Valley of the Maiji Forest Farm were as the main distribution spots of Acer miaotaiense in the Western Qin Mountains.The maximum population of the species was situated in the Guanyin Forest Farm.The shortest straight-line distance between any two spots was determined to be 8 km,display a longer distance among different populations.Total distribution area of four populations,controlled in the extent of 5 km surrounding every spot was accounted for 307794650.24 m~2,and distributed mainly over the valley ranged from 1400 m to 1600 m altitude and semi-heliad slope below 15°.