Temporal and Spatial Variation of Erosion Gullies in Kebai Black Soil Region of Heilongjiang during the Past 50 Years
Temporal and Spatial Variation of Erosion Gullies in Kebai Black Soil Region of Heilongjiang during the Past 50 Years
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发表时间：
2005
影响因子：
5.5
通讯作者：
Yan Yechao
中科院分区：
文献类型：
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作者：
Yan Yechao
我国黑土资源以肥沃、有机含量高、最适宜耕种而闻名。人类长期过度开垦和不合理耕作，造成水土大面积流失。特别是侵蚀沟壑切开地表，蚕食田地，冲刷肥沃的土壤，降低大耕机的效率。侵蚀沟研究是土壤侵蚀学科的重要组成部分之一。本文基于遥感和地理信息系统，以柯拜地区为例，以侵蚀沟密度为主要指标，分析了侵蚀沟密度的动态变化，不同海拔、坡度、坡向的侵蚀沟变化以及不同形态区域的变化，最终揭示了东北典型黑土区近50年来侵蚀沟的时空变化规律。
The black soil resource of China is famous for its fertility, high organic content, and the best applicability for cultivation. The long-term human activities of over-reclamation and irrational cultivation resulted in water and soil loss on a large scale. Especially the erosion gullies incise the land surface, nibble the field, wash out the fertile soil and degrade the efficiency of the large cultivator. Erosion gully research is one of the important parts of soil erosion subject. In this paper, based on the Remote Sensing and Geographical Information System, taking Kebai area as a case study, using density of erosion gully as the main indicator, the authors analyzed the dynamic change of the erosion gully density, the variation of the erosion gully on different altitudes, slopes and aspects, as well as the variation in different morphogenetic regions, and finally revealed the rule of temporal and spatial variations of erosion gullies in recent 50 years in typical black soil area of Northeast China.