A Discussion on Macroscopic Pattern for Controlling Large Watershed in Loess Hilly Gullied Region

Xu Guoli; Lu Cuihu

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A Discussion on Macroscopic Pattern for Controlling Large Watershed in Loess Hilly Gullied Region

- A Discussion on Macroscopic Pattern for Controlling Large Watershed in Loess Hilly Gullied Region
- Bulletin of Soiland Water Conservation Vol. 8, Issue 3, Pages: 26-33(1989)
- 作者机构：
  
  中国科学院水利部西北水土保持研究所
- 作者简介：
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- DOI：
  CLC：
- Published：1989
- 稿件说明：
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Xu Guoli, Lu Cuihu. A Discussion on Macroscopic Pattern for Controlling Large Watershed in Loess Hilly Gullied Region[J]. Bulletin of Soiland Water Conservation, 1989, 8(3): 26-33.
DOI：

Xu Guoli, Lu Cuihu. A Discussion on Macroscopic Pattern for Controlling Large Watershed in Loess Hilly Gullied Region[J]. Bulletin of Soiland Water Conservation, 1989, 8(3): 26-33. DOI：

摘要

本文通过杏子河流域纵横向沟道比降的量算

分别得出上中下游比降依次递减的规律

及横向(一级支流)沟道比降与沟道长度呈指数函数关系。从河源至沟口随海拔高程的递减

人口密度、降雨量、温度呈递增趋势和土壤侵蚀强度呈递减趋势的规律。以这四个因素为依据

提出杏子河流域纵横向垂直带宏观治理方案

把杏子河流域分为三个治理带

即飞播草灌带、林农草灌带和农田基建带。

Abstract

The longitudinal and transverse vally gadient in Xingzhihe water-shed was measured

it decreases progressively from upper to lower rea-ches.There is a componet function relation between transverse valleygradient (first order branches) and valley length. In this watershed thepopulation density

precipitation and temperature increase by degrees butsoil erosion intensity decreases with decreasing of altitude. According tofour factors above

the authors have suggested macroscopic control patternthrough longitudinal

transverse and vertical zones in whole Xingzhihewatershed

so the Xingzhihe watershed is divided into three zories: Aero-sowing herbs and shrubs zone; mixed zone of forest

shrubbery

pastureand agriculture; agriculture zone with basic farmlands.

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