CAJ | 학술논문

基于水土流失监测模型QRSM，研究了丹江口库区商南县共698条集水区构成的小流域水土流失现状。结果表明，微度和轻度侵蚀面积占总面积的63.43%，流失量占总侵蚀量的5.27%，集中在商南县北部和南部治理区，水土流失轻度等级以上面积达57.92%。极强度和剧烈侵蚀面积占总面积的20.40%，侵蚀量占总侵蚀量的87.14%，是造成全县水土流失的主要区域，集中分布在以县城为中心的主河道两岸，从698条小流域整体分布来看，中、轻度侵蚀以上面积占总面积百分比超过40%的小流域达560条，占全部698条小流域总数的80.2%。
기우수토류실감측모형QRSM，연구료단강구고구상남현공698조집수구구성적소류역수토류실현상。결과표명，미도화경도침식면적점총면적적63.43%，류실량점총침식량적5.27%，집중재상남현북부화남부치리구，수토류실경도등급이상면적체57.92%。겁강도화극렬침식면적점총면적적20.40%，침식량점총침식량적87.14%，시조성전현수토류실적주요구역，집중분포재이현성위중심적주하도량안，종698조소류역정체분포래간，중、경도침식이상면적점총면적백분비초과40%적소류역체560조，점전부698조소류역총수적80.2%。
The current status of soil loss in 698 small watersheds in Shangnan County in Danjiangkou Reservoir area was investigated based on the quantitative remote sensing model(QRSM). The results showed that the area for weak erosivity and slight erosivity occupied 63.43%of the total study area, the amount of soil loss accounted for 5.27%of total soil erosivity, which focused on the treated area of north and south part of of Shangnan county. The percentage of the area for slight erosivity and above reached to 57.92%. The area for high erosivity and vio-lent erosivity was up to 20.4%of total area, and the soil loss up to 87.14%, which mainly located in the region along the main river around the county city. From the small watershed, the amount of the watershed with the area of slight and moderate erosivity exceeding 40%was up to 560 watersheds, and occupied 80.2%of the total small watersheds in the county.