人民黄河2016，Vol.38Issue(3)：76-79,4.DOI:10.3969/j.issn.1000-1379.2016.03.021
南小河沟流域侵蚀沟道特征研究
Study on the Characteristics of Erosion Gullies in Nanxiaohegou Watershed
摘要
Abstract
With the purpose of exploring the quantitative relationship between the features of erosion gullies in the Loess Plateau and the according managing measures, the paper studied on the erosion level and the channel morphology ( opening degree, surface dissected degree and main branch channel coefficient ) of the typical region in Nanxiaohegou watershed and finally put forward the according management measures by adopting the physiognomy geometry ration math model and the analysis method of channel morphology. The results indicate that the channel of Nanxiaohegou watershed can be classified into three grades;the main branch channel condition consists of two types that are branch channel and main channel;there are three types of channel opening degree including semi⁃open, open and deep open types;there are strong, medium and weak separation degrees;among the existing nine kinds of different levels and types'channel combination which can be divided into three grades. The grade one channel is the key area of being managed, which has various channel and erosion types. Whereas, the channel types of the gradeⅡ and gradeⅢ are simple, which only has check dams and backbone dams respectively. Moreover, there is a relationship between channels'types and their levels, which can be analyzed as channel types rapidly reduces as channel level increases.关键词
侵蚀沟道/沟道分级/沟道分类/沟道治理/南小河沟流域Key words
eroded channel/channel grading/channel classification/channel management/Nanxiaohegou watershed分类
农业科技引用本文复制引用
赵嘉莹,张富,郭嘉,郜文旺,郭锐,袁静..南小河沟流域侵蚀沟道特征研究[J].人民黄河,2016,38(3):76-79,4.基金项目
甘肃省第一次全国水利普查项目（201225519）。 （）
