东灵山—百花山景区土壤侵蚀的安全评价  

Safety Evaluation on Soil Erosion in Dongling-Baihua Mountainous Area

作　　者：李炜民[1] 谢军飞[2] 李晓兵[1] 李延明[2] 

机构地区：[1]北京师范大学 [2]北京市园林科学研究所,北京100102

出　　处：《西北林学院学报》2007年第4期62-65,77,共5页Journal of Northwest Forestry University

基　　金：北京市园林局重大科技项目:北京市东灵山;百花山景区草甸及景观变化评价与监测(200453)

摘　　要：为了客观评价东灵山-百花山景区土壤侵蚀的实际状况,并在此基础上进行草甸植被保护与恢复技术的研究,结合实地样地调查,在GIS软件的Modeler模块支持下,根据通用土壤流失方程(USLE)编写相关因子的图像重叠运算程序,最终对东灵山-百花山景区土壤侵蚀量进行了估算,对土壤侵蚀的空间分布特征进行了描述,其结果显示该地区土壤侵蚀量年平均为2288 t·km^(-2)左右,区域整体土壤侵蚀强度为Ⅱ级,局部土壤侵蚀现象值得注意。Sample plot survey scenic spots of Donglingshan and field survey were integrated to investigate the actual contlitions of soil erosion in and Baihuashan mountainous areas. Supported by Modeler module of geographic informarion system （GIS） software, an image overlap operation program of relative factor based on Universal Soil Loss Equation （USLE） was compiled. Finally, the amount of soil errosion in this area was estimated. The spatial distribution of soil erosion characteristics was presented. The result showed that the amount of watershed soil erosion was 2 288 t/（km^2 · a^-1）, the total intensity was level Ⅱ. Attention should be paid to partially occurred soil erosion.

关 键 词：东灵山-百花山 土壤侵蚀强度 空间分布 GIS 

分 类 号：S157[农业科学—土壤学]