皇甫川流域水土保持动态监测研究  

Study on the Dynamic Monitoring of Soil and Water Conservation of Huangfuchuan Valley

作　　者：王鸿斌[1] 翟然[2] 刘晓静[1] 刘海燕[1] 

机构地区：[1]黄河水利委员会西峰水土保持科学试验站,甘肃庆阳745000 [2]河海大学地球科学与工程学院,江苏南京210098

出　　处：《人民黄河》2014年第9期92-94,112,共4页Yellow River

摘　　要：以皇甫川流域为研究区域,基于不同时期的数字航摄影像,运用ArcGIS软件,通过目视解译和综合判定分别提取2006年、2011年水土保持措施、植被覆盖度和土壤侵蚀数据,确定其转移矩阵,分析皇甫川流域水土保持措施、植被覆盖度及土壤侵蚀强度动态变化情况。结果表明:5 a来,皇甫川流域水土保持措施净变化量为78 km2,占流域总面积的2.40%,变化顺序为未成林>灌木>沟台地>乔木林;各级植被覆盖度净变化面积为33 km2,占流域总面积的1.02%,变化顺序为低覆盖>中低覆盖>中覆盖;各级土壤侵蚀强度净变化面积为60 km2,占流域总面积的1.85%,沟蚀变化较小,面蚀变化顺序为中度>强烈>微度>轻度>极强烈>剧烈。Taking Huangfuhuan basin as the study area,based on different periods of digital aerial photography,using ArcGIS software,through visual interpretation and comprehensive judgment,it extracted the measures of soil and water conservation,the vegetation coverage and the soil ero-sion data in 2006 and 2011 respectively,determined its transfer matrix and analyzed the dynamic change of the soil and water conservation meas-ures,the vegetation coverage and the soil erosion intensity in Huangfuchuan basin. Results show that in five years,in Huangfuchuan basin,the net variation of soil and water conservation measures is 78km2 ,accounting for 2. 4% of the total area of the basin,change order is forest>shrub>ditch terrace>arbor;The net change in vegetation coverage is 33km2 ,accounting for 1. 0% of the total area of the basin,change order is low coverage>medium and low coverage > medium coverage;Net variation of soil erosion intensity is 60km2 ,accounting for 1. 85% of the total area of the ba-sin,the gully erosion change is smaller,surface erosion change order is moderate>strong>micro degrees>mild>very strong>intense.

关 键 词：水土保持 遥感 地理信息系统 转移矩阵 皇甫川流域 

分 类 号：S157[农业科学—土壤学]