摘要
以黄委会西峰水土保持试验站南小河沟流域的试验研究成果为依据,文章概述了黄土高原沟整区小流域水土流失的特点及治理对策。其特点是:67.4％径流来自塬面,86.3％的泥沙来自沟谷,侵蚀方式是以重力侵蚀为主;治理对策是:塬面应以控制塬水下塬的措施为主;塬坡主要采取固坡保塬措施,而沟谷则主要是采取抬高侵蚀基准、防止重力侵蚀的措施。这样在塬面、塬坡、沟谷形成工程措施与生物措施结合的三道防线,构成较为完善的防护体系。
Based on the test results of Nanxiaohegou small watershed by Xifeng Soil and Water Conservation Station, this paper sums up the main characteristics of soil erosion of small watersheds on the gullied loess plateau and Conservation strategy The main characteristics are: 67.4％ part of runoff comes from top of the plateau,. 86.3％ of sediment from gullies, and gravitational erosion in the latter playing the predominant role. In correspondence with natural features of the three geographic zones, a conservation system consisting of engineering and biologic measures can completely control erosion: retaining runoff on the top of the plateau, protecting slopes, and raising erosive base as well as preventing gravitational erosion in the gullies.
出处
《人民黄河》
CAS
北大核心
1990年第2期59-63,共5页
Yellow River
