东北典型漫川漫岗区的侵蚀沟空间特征分析  

Analysis of Erosion Gully Spatial Characteristics in Typical Rolling Hilly Region of Northeast China

作　　者：徐国勇 杨继文 邓蜀江 XU Guoyong;YANG Jiwen;DENG Shujiang(The Second Geomatics Cartography Institute,Ministry of Natural Resources,Harbin 150081,China)

机构地区：[1]自然资源部第二地理信息制图院,黑龙江哈尔滨150081

出　　处：《测绘与空间地理信息》2020年第11期123-125,129,共4页Geomatics & Spatial Information Technology

摘　　要：沟壑侵蚀是制约东北地区农业生产发展的重要问题之一,影响了当地大型机械耕作效率,阻碍了社会经济的可持续发展。以典型的漫川漫岗地区嫩江县为研究区,利用高分辨率的航空遥感影像,结合数字高程模型以及土地利用现状数据,分析侵蚀沟与土地利用因素、地形因素间的空间特征。研究结果表明,嫩江县土壤侵蚀情况严重,随高程、坡度的增加,侵蚀沟密度表现为先增加后减小的趋势;阳坡比阴坡更易发生侵蚀现象;侵蚀沟密度最大的用地类型是裸地,其次是园地、耕地,植被覆盖度和人类活动也是影响侵蚀沟发生发育的重要因素。Gully erosion is one of the important problems restricting agricultural production in northeast China.It affects the farming efficiency of local large machinery and hinders the sustainable development of social economy.Taking Nenjiang county,a typical rolling hilly region,as the study area,this paper uses high-resolution aerial remote sensing images to analyze the spatial characteristics of erosion gully,land use factors,and terrain factors,in combination with digital elevation model and land use status data.Experiments show that the situation of soil erosion in Nenjiang county is severe.With the increase of elevation and slope,the density of erosion gully first increases and then decreases.The erosion phenomenon is more likely to occur on the sunny slope than on the shady slope.The land type with the highest density of erosion gully is bare land,followed by garden land and cultivated land.Vegetation coverage and human activities are also important factors affecting the occurrence and development of erosion gully.

关 键 词：漫川漫岗 侵蚀沟 地形因素 土地利用 

分 类 号：P237[天文地球—摄影测量与遥感]