| 普定岩溶区水土流失与土壤漏失模式研究 |
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| 引用本文： | 周念清,李彩霞,江思珉,唐益群.普定岩溶区水土流失与土壤漏失模式研究[J].水土保持通报,2009,29(1):7-11. |
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| 作者姓名： | 周念清 李彩霞 江思珉 唐益群 |
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| 作者单位： | 周念清,李彩霞,江思珉,ZHOU Nian-qing,LI Cai-xia,JIANG Si-min(同济大学水利工程系,上海,200092);唐益群,TANG Yi-qun(同济大学,地下建筑与工程系,上海200092)
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| 基金项目： | 国家重点基础研究发展规划(973计划) |
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| 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4 422.3 t/(km2·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.
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| 关 键 词： | 普定 岩溶 水土流失 土壤漏失 漏失模型 |
| 收稿时间： | 2008/7/31 0:00:00 |
| 修稿时间： | 2008/9/25 0:00:00 |
Models of Soil and Water Loss and Soil Leakage in Puding Karst Area |
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| ZHOU Nian-qing,LI Cai-xi,JIANG Si-min and TANG Yi-qun.Models of Soil and Water Loss and Soil Leakage in Puding Karst Area[J].Bulletin of Soil and Water Conservation,2009,29(1):7-11. |
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| Authors: | ZHOU Nian-qing LI Cai-xi JIANG Si-min and TANG Yi-qun |
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| Institution: | Department of Hydraulic Engineering, Tongji University, Shanghai 200092, China;Department of Hydraulic Engineering, Tongji University, Shanghai 200092, China;Department of Hydraulic Engineering, Tongji University, Shanghai 200092, China;Department of Geotechical Engineering, Tongji University, Shanghai 200092, China |
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| 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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| Keywords: | Puding County karst soil and water loss soil leakage leakage model |
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