水土保持学报2012，Vol.26Issue(5)：239-243,5.
典型喀斯特峰丛洼地降雨特性及浅层地下水埋深变化特征
Variation of Precipitation Characteristics and Shallow Groundwater Depth in the Typical Karst Peak-cluster Depression Areas
摘要
Abstract
Based on the measured data of precipitation and shallow groundwater depth during 2006-2011,precipitation characteristics and the variation of shallow groundwater depth were analyzed in the typical Karst peak-cluster depression areas of northwest Guangxi of China.The results showed that though rainfall was abundant,it distributed unevenly within and among years,and ranged from 1 127.3 mm in 2011 to 1 979.8 mm in 2008.The precipitation mainly concentrated in rainy season from April and September,which occupied 82.4%~85.1%,74.7% and 65.9% of the total annual precipitation for normal year,rainy years and dry year respectively.The frequency and accumulation of effective precipitation and the maximum of daily precipitation tended to increase with the increase in annual precipitation.The precipitation with rainfall intensity higher than 16 mm/h and the maximum of daily rainfall mainly concentrated between May and August,and they were 67.4 mm/h and 152.9 mm,respectively.More than half a year did not have rain,and the weather without rainfall happened frequently.On average,the weather without rainfall for more than 3 days and 10 days took place 26 times and 5 times each year,and it mainly occurred in dry season.However,the annual precipitation didn't decrease with the increase of rainless days and it mainly depended on the frequency of different magnitude of precipitation.The groundwater depth was shallower with higher variation in wet season than in dry season,and it varied moderately and was 2 m and 3 m on average,respectively.The dynamic change of shallow groundwater depth with rainfall was single-peak type and the peak value lasted for a short time,and the antecedent precipitation had an important influence on its fluctuation.关键词
桂西北喀斯特地区/峰丛洼地/降雨特性/浅层地下水埋深/季节变化Key words
Karst areas in northwest Guangxi of China/peak-cluster depression area/precipitation characteristics/shallow groundwater depth/seasonal change分类
天文与地球科学引用本文复制引用
杨静,陈洪松,聂云鹏,王克林..典型喀斯特峰丛洼地降雨特性及浅层地下水埋深变化特征[J].水土保持学报,2012,26(5):239-243,5.基金项目
中国科学院西部行动计划项目 （）
中国科学院知识创新工程重要方向项目 （）
国家自然科学基金项目 （）
