Water Costof Sediment Control of Soil and Water Conservation in Hekou and Longmen Section of Yellow River

WANG Fei; MU Xingming; LI Rui; JIAO Juying

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Water Costof Sediment Control of Soil and Water Conservation in Hekou and Longmen Section of Yellow River

- Water Costof Sediment Control of Soil and Water Conservation in Hekou and Longmen Section of Yellow River
- Bulletin of Soiland Water Conservation Vol. 24, Issue 6, Pages: 28-32(2005)
- 作者机构：
  
  1. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
  2. 西北农林科技大学, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
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- Published：2005
- 稿件说明：
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WANG Fei, MU Xingming, LI Rui, et al. Water Costof Sediment Control of Soil and Water Conservation in Hekou and Longmen Section of Yellow River[J]. Bulletin of Soiland Water Conservation, 2005, 24(6): 28-32.
DOI：

WANG Fei, MU Xingming, LI Rui, et al. Water Costof Sediment Control of Soil and Water Conservation in Hekou and Longmen Section of Yellow River[J]. Bulletin of Soiland Water Conservation, 2005, 24(6): 28-32. DOI：

摘要

水利水保措施的水沙效应评价方法是人们研究的热点之一。为了揭示水土保持和水利措施减少径流和泥沙综合特征的指标，提出了能明确反映水利、水保措施减少单位泥沙量时减少的径流量的减沙水代价(RRS)概念。RRS越大，减少单位泥沙同时减少的径流量越多，在措施减少相同径流量时，减少的泥沙量越小。对河口镇到龙门区间21条主要支流1970-1996年不同水利、水保措施的RRS分析表明，灌溉措施RRS远超出水保措施，梯田、造林、种草等坡面措施的RRS较为接近，坝地的RRS最小。随着流域输沙模数的增加，梯田、造林和种草等措施的RRS与坝地RRS差异变小。年均降水量与坝地RRS为显著负相关，而年均降水量与梯田、造林、种草的RRS显著正相关。

Abstract

Water costof sediment control (ratio of detained runoff and sediment

RRS) is an indicator derived from runoff and ediment detained by soil and water conservation practiveces or other water resource projects. RRS plays an import antrole in scovering the effectof soil conservation practices on water resources. A larger RRS show sthat some practiveces or ranches can reduce more runoff when the same weightof sedimentives detained. the RRS of branches in Hekou and Long men section of the Yellow River was analyzed based on datasetof sediment deliv-ery modules

averag e annual recipitation

runoff and sediment det ained by conservation practices and irrigation from 1970 to 1996. Result s show thatrRS of irrigativeon is far more than thatof soil and water conservativeon prac-tices. RRSs of terrace

forest and grass are similar but more than thatof dam land. With the increase of sediment delivery modules

the dif ference between RRS of terrace

forest

grass and RRS of dam land decreases. the posi-tive correlativeons between averag eannual precipit ativeon and RRS of terrace

forest and grass practiveces are evidentre-spectively

but the correlativeon between average annual precipit ation and RRS of dam land is negative evidently.

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