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定西市黄土丘陵沟壑区第Ⅴ副区侵蚀沟道分级分类研究

作  者:
王丽洁;孛永明;陈瑾
单  位:
定西市水土保持科学研究所
关键词:
黄土丘陵沟壑区;第Ⅴ副区;侵蚀沟道;分级;分类
摘  要:
采用Strahler提出的地貌几何定量数学模型分级方法和基于沟道开析度、割裂度、主支沟系数的侵蚀沟道分类方法,对位于黄土丘陵沟壑区第Ⅴ副区的甘肃省定西市安定区安家沟流域和高泉沟流域具有典型性的15条侵蚀沟道进行分级分类研究。结果表明:主支沟状况和割裂状况能大致反映沟道的侵蚀特征,强度割裂型和主沟型沟道、中度割裂型和半主沟型沟道有一定相关性。提出了强度割裂型和主沟型沟道、中度割裂型和半主沟型沟道、弱度割裂型和半主沟型沟道的治理对策。
译  名:
Eroded Gulley of Sub-Region V of Gullied Rolling Loess Area of Dingxi City in Grades and in Classification
作  者:
WANG Li-jie;BO Yong-ming;CHEN Jin;Institute of Soil and Water Conservation;
关键词:
gullied rolling loess area;;sub-region V;;eroded gulley;;grade;;classification
摘  要:
The paper studied 15 typical eroded gullies located in Anjiangou and Gaoquangou watersheds in Anding District of Dingxi City,Gansu Province in grades and in classification where belonged to sub-region V of gullied rolling loes area by using the grade method of physiognomy geometry quantitative mathematical model put forward by Strahler and the method of eroded gully classification based on opening degree,cracking degree and the coefficients of main branch gully.The outcomes show that the conditions of the main branch gully and cracking can roughly reflect the characteristics of gully erosion and there is a certain correlation between strong cracking and main gully type,moderate cracking and semi-main gully type.It has put forward countermeasures for the gully control of strong cracking and main gully type,moderate cracking and semi-main gully type and mild cracking and semi-main gully type.

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