水科学进展Issue(6)：779-786,8.DOI:10.14042/j.cnki.32.1309.2015.06.003
流动沙丘水分深层入渗量与降雨的关系
Relationship between rainfall and deep layer infiltration of mobile dunes in the Mu Us Sandy Land, China
摘要
Abstract
In order to analyze the relationship between deep layer moisture infiltration and rainfall in mobile dunes, using YWB⁃01 deep layer moisture infiltration recorder and soil water dynamics theory, this study explains the rainfall infiltration moisture transfer process in Mu Us Sandy Land mobile dunes, as well as the infiltration recharge character⁃istics at the soil layer of 150cm deep. The results showed that:the major source of deep layer soil moisture in mobile dunes was rainfall infiltration. The infiltration recharge amount was 141�4 mm for 2010 and 355�8 mm for 2011, counting for 55�1% and 68�2% of the total rainfall amount of that year. The major recharging season of deep layer in⁃filtration lasted from May to November, and the recharge amount during these months counted for 95% of the total an⁃nual amount. When the soil moisture condition remained within the field moisture capacity, rainfall’ s recharging effect on 150 cm deep soil layer was mainly influenced by rainfall amount and density, with a significant positive correlation ( P<0�01) between infiltration and rainfall amount. Water usually infiltrated into the 150 cm deep soil layer at 30 to 48 hours after the start of rainfall. The infiltration recharging rate increased rapidly in the first 3 to 5 hours, reaching its maximum at 3 to 8 hours, before decreasing slowly afterwards. The entire infiltration recharging process could last for longer than 96 hours.关键词
流动沙丘/土壤水分/降雨量/入渗补给量Key words
mobile dunes/soil moisture/rainfall/infiltration recharge amount分类
农业科学引用本文复制引用
李卫,冯伟,杨文斌,唐进年,党宏忠..流动沙丘水分深层入渗量与降雨的关系[J].水科学进展,2015,(6):779-786,8.基金项目
国家重点基础研究发展计划（973计划）资助项目（2013CB429901）；国家自然科学基金资助项目（31170667） The study is financially supported by the National Basic Research Program of China （ No?2013CB429901） and the National Natu-ral Science Foundation of China （ No?31170667）． （）
