Effect of Comprehensive Watershed Control on Infiltration Rate in the Qinba Mountain Area

DING Wen-feng; ZHANG Ping-cang; REN Hong-yu; FAN Yi-lin

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Effect of Comprehensive Watershed Control on Infiltration Rate in the Qinba Mountain Area

- Effect of Comprehensive Watershed Control on Infiltration Rate in the Qinba Mountain Area
- Bulletin of Soiland Water Conservation Vol. 26, Issue 1, Pages: 11-14(2007)
- 作者机构：
  
  长江科学院水土保持研究所,湖北,武汉,430010
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2007
- 稿件说明：
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DING Wen-feng, ZHANG Ping-cang, REN Hong-yu, et al. Effect of Comprehensive Watershed Control on Infiltration Rate in the Qinba Mountain Area[J]. Bulletin of Soiland Water Conservation, 2007, 26(1): 11-14.
DOI：

DING Wen-feng, ZHANG Ping-cang, REN Hong-yu, et al. Effect of Comprehensive Watershed Control on Infiltration Rate in the Qinba Mountain Area[J]. Bulletin of Soiland Water Conservation, 2007, 26(1): 11-14. DOI：

摘要

采用双环法及对比分析法对秦巴山区小流域的土壤入渗特征进行了分析研究。结果表明

两条对比小流域中各不同土地利用类型的土壤稳渗速率均呈现出草地>林地>沟台地>坡耕地>梯田>荒地的变化规律

且已治理流域土壤入渗能力较未治理流域相同土地利用状况的土壤入渗能力有所增大。这主要与流域实施水土保持综合治理后土壤容重、有机质、>0.25 mm水稳性团聚体含量、孔隙度等影响土壤入渗的因素发生了明显改变有关

梯田等工程措施对土壤稳渗速率的改善作用不明显。由此说明

大规模水土保持综合治理可有效改善土壤的某些物理、化学性质

并增大土壤的入渗能力

是导致流域洪水过程及径流量发生变化的原因之一。

Abstract

To provide a scientific basis regarding the effect of soil and water comprehensive control on runoff generation and its amount

the characteristics of infiltration in controlled and non-controlled watersheds of the Qinba hilly region were studied using the dual rings method and the parallel analysis.Results indicate that the infiltration rates of different landuses in controlled watersheds are obviously greater than that in non-controlled watershed.Steady-state infiltration rates in different landuses descend in the sequence of grassland

forest land

canal banks

slopping cultivated field

terrace and wasteland.Soil bulk density

soil organic matter content

the 0.25 mm water stable aggregates and soil porosity are the main causes for the increased infiltration rate.The increased infiltration rate by large-scale comprehensive control is one of the reasons for runoff generation process and variation of runoff amount.

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