摘要
朝阳市水土流失面积 1195 1 4km2 ,占全市总面积的 60 67% ,沟壑侵蚀面积占水土流失面积的 2 2 40 %。利用沟壑纵剖面信息熵分析法 ,进行沟壑侵蚀地貌形态计量分析 ,按照沟壑三维特征值变化规律 ,将沟壑侵蚀概化为前期、中期、后期三个阶段。采取典型沟壑治理开发试验与大面积沟壑治理开发应用相结合的研究方法 ,建立沟壑三维梯级治理开发措施体系 ,取得了显著的生态、经济和社会效益。
The soil and water lost area in Chaoyang City is 11 951.4 km^2, making up 60.67% of the total of the city. The eroded gully area is 22.40% of the soil and water lost area. The paper estimates and analyzes the eroded geomorphology of gullies by using the method of information entropy analysis of vertical section of gully. It generalizes the gully erosion into three stages of earlier, mid and later ones according to the variation law of 3D characteristic value of gully. It establishes a system of 3D-cascade management and development measures for Gullies and achieves notable ecological, economic and social benefits through the combination of tests on management and development of typical gullies with the application of management and development of gullies in a large area.
出处
《中国水土保持》
北大核心
2004年第2期25-26,共2页
Soil and Water Conservation in China
关键词
低山丘陵区
沟壑
水土保持
三维特征
梯级治理模式
hilly area
gully
soil and water conservation
cascade mode of management and development
