Models of Soil and Water Loss and Soil Leakage in Puding Karst Area

ZHOU Nian-qing; LI Cai-xia; JIANG Si-min; TANG Yi-qun

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Models of Soil and Water Loss and Soil Leakage in Puding Karst Area

- Models of Soil and Water Loss and Soil Leakage in Puding Karst Area
- Bulletin of Soiland Water Conservation Vol. 28, Issue 1, Pages: 7-11(2009)
- 作者机构：
  
  1. 同济大学水利工程系,上海,200092
  2. 同济大学地下建筑与工程系,上海,200092
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009
- 稿件说明：
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ZHOU Nian-qing, LI Cai-xia, JIANG Si-min, et al. Models of Soil and Water Loss and Soil Leakage in Puding Karst Area[J]. Bulletin of Soiland Water Conservation, 2009, 28(1): 7-11.
DOI：

ZHOU Nian-qing, LI Cai-xia, JIANG Si-min, et al. Models of Soil and Water Loss and Soil Leakage in Puding Karst Area[J]. Bulletin of Soiland Water Conservation, 2009, 28(1): 7-11. DOI：

摘要

普定县是贵州省水土流失比较严重的地区之一

水土流失面积占全县总面积的60.8%

土壤年侵蚀模数高达4422.3t/(km

·a)。通过现场调查

对该地区地形特征、岩性特点和水文条件进行综合分析。结果表明

岩溶裂隙、落水洞及地下暗河发育是造成水土流失的主要因素。对岩溶区水土流失与土壤漏失模式进行了概化

探讨了水土流失过程中雨滴溅蚀、坡面侵蚀、落水洞漏失及地下暗河运移之间的关系

从理论上分析了岩溶区水土流失的作用机理

对该地区水土流失防治具有一定的指导意义。

Abstract

Puding County is one of the most serious regions suffering from soil and water loss in Guizhou Province.The area of soil and water loss in the county is 60.8% of the total land area and the soil erosion modulus is 4422.3t/(km2·a).The development of karst fissure

sinkhole

and underground river is found to be the main factor of soil and water loss through analyzing the field data

topographic characteristics

lithologic features

and hydrological condition.The models of soil and water loss and karst leakage are generalized and the relationships among raindrop splash

slope erosion

sinkhole leakage

and underground river transport in the processes of soil and water loss are studied.The mechanisms of soil and water loss in karst area are analyzed as well.The study has a certain signification to prevent soil and water loss in this area.

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