Gully erosion regionalization of black soil area in northeastern China

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• 作者：Jiuchun Yang ; Shuwen Zhang ; Liping Chang ; Fei Li ; Tianqi Li…
• 关键词：regionalization ; gully erosion ; soil and water conservation ; black soil area ; northeastern China
• 刊名：Chinese Geographical Science
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：27
• 期：1
• 页码：78-87
• 全文大小：
• 刊物主题：Geography, general;
• 出版者：Science Press
• ISSN：1993-064X
• 卷排序：27

文摘

Gully erosion is the frequent and main form of soil erosion in the black soil area of the northeastern China, which is one of the most important commodity grain production bases in China. It is encroaching upon the fertile farmland there. Regionalization of gully erosion can reveal the spatial distribution and regularity of the development of gully erosion. Based on the eco-geographical regional background features of the black soil area, this study combined the regionalization with influencing factors of the development of gully erosion. GIS spatial analysis, geostatistical analysis, spatial statistics, reclassification, debris polygon processing and map algebra methods were employed. As a result, the black soil area was divided into 12 subregions. The field survey data on type, length, volume and other characteristics indicators of gully erosion were used to calibrate the results. Then the features of every subregion, such as where the gully erosion is, how serious it is, and why it happens and develops, were expounded. The result is not only an essential prerequisite for gully erosion surveys and monitoring, but also an important basis for gully erosion prevention.