摘要
采用水利部2008年一月颁布水利行业标准《土壤侵蚀分类分级标准》(SL190-2007)中的面蚀(片蚀)分级指标,同时结合密云县地理概况,通过对数字高程模型和遥感影像两个数据源对土壤侵蚀分布与强度的动态变化进行快速监测,进一步分析得出坡度,植被覆盖度和土地利用分类三个因子,建立土壤侵蚀交叉表,运用GIS栅格模块的空间分析功能对土壤侵蚀风险进行评价.分析了该区土壤侵蚀现状,明确了土壤侵蚀的强度和空间分布规律,为水土保持决策提供了依据,并提出了相关对策,具有重要的理论意义和实践意义.
According to＂the soil erosion classification grade criteria＂（SL 190-2007） issued by the Ministry of Water Resources（2008）,with the situation of miyun county,the author monitored the changing process of the soil erosion.Three factors of land useclass,vegetation coverage and slope,which make the crosstab of soil erosion risk ranking,were selected as assessing indices in Arc /info Spatial Analyst.The spatial characteristic of soil erosion sensitivity was clearly analyzed.Furthermore,the result can supply evidence for the government＇s land protection decisions.The effective counter measures controlling the soil erosion are discussed,which is of significance both in theory and practice.
出处
《首都师范大学学报（自然科学版）》
2010年第2期65-69,共5页
Journal of Capital Normal University：Natural Science Edition
基金
2007年环北京区域地表环境遥感动态监测与评价技术研究课题(2007BAH15B02)资助
关键词
土壤侵蚀
遥感
GIS
soil erosion
remote sense
GIS.
