东北半干旱区侵蚀沟现状调查研究

Investigation and Research on Current Situation of Erosion Gullies in Semiarid Area of Northeast China

侵蚀沟的发生发展会造成水土流失面积加剧,不断蚕食耕地,东北黑土区侵蚀沟的治理工作正在如火如荼的进行,但都是针对典型黑土区,而东北半干旱区侵蚀沟造成的水土流失少有人关注。本次研究采用遥感图像和普查数据相结合的方法,探明了该地区侵蚀沟的数量以及发生发展现状,调查结果显示,东北半干旱区侵蚀沟基数大,且大多为发育型侵蚀沟,若不及时采取治理措施,可能会使侵蚀沟继续发展。

The occurrence and development of erosion gully will increase the area of soil erosion and continuously erode the cultivated land. The treatment of erosion gully is in full swing in the black soil region of Northeast China. However, they are all directed at the typical black soil area, while the soil erosion caused by the erosion gully in the semiarid area of Northeast is less concerned. The study uses a combination of RS and census data, to explore the number of erosion gully and the status of development. The survey results show that the number of erosion gully is large, and most of them are developmental erosion gullies. If the governance measures are not taken in time, the erosion gully may continue to develop.