Water resource characteristics of epikarst spring in rocky desertification area — A case study in Longhe, Guangxi, China

2011 International Symposium on Water Resource and Environmental Protection Pub Date : 2011-05-20 DOI:10.1109/ISWREP.2011.5893060

Yan Deng, Zhongcheng Jiang

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Abstract

Epikarst water is the main source for drink and irrigation in karst fengcong depression area in southwest china. Investigating, exploring and utilizing epikarst water is a hot issues for scholars in recent years. The epikarst spring in the Longhe rocky desertification area in SW China was selected for this study. Continuous auto-monitoring of the spring's discharge and rainfall had been done from 2003 to 2005. The results indicated that Flux of epikarst springs is small and will stop flow in a long time and has a sensitive response to rainfall, at the same time,epikarst springs Water resource in epikarst area distribute unequably in different season. The storage and derivation technique, which is a economice, effective and universal way, distribute widely in karst mountain area in SW china. At the same time, adding forest coverge in catchment area, developing water conservation forest, enhancing the regulation and storage ability of epikarst zone to water cycle, increasing water resources of epikarst springs and extending its flow time are the basic way of advancing the effective utilization of epikarst water resources.

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石漠化地区表层岩溶泉水资源特征——以广西龙河为例

表层岩溶水是西南喀斯特峰丛洼地饮用和灌溉的主要水源。研究、开发和利用表层岩溶水是近年来国内外学者关注的热点问题。以陇河石漠化地区表层岩溶泉为研究对象。从2003年到2005年，对春水流量和降雨量进行了连续自动监测。结果表明:表层岩溶泉流量小，长时间停止流动，对降雨有敏感响应，同时表层岩溶区水资源在不同季节分布不均衡。储导技术是一种经济、有效、通用的方法，在西南喀斯特山区分布广泛。同时，增加集水区森林覆盖率、发展涵养林、增强表层喀斯特区对水循环的调节和涵养能力、增加表层喀斯特泉的水资源并延长其流动时间是推进表层喀斯特水资源有效利用的基本途径。

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2011 International Symposium on Water Resource and Environmental Protection

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