南水北调与水利科技Issue(1)：155-160,6.DOI:10.3724/SP.J.1201.2013.01155
华北山前平原灌溉农田深层土壤水分动态特征及渗漏量估算
Dynamic Characteristics and Drainage Assessment of Deep Soil Moisture in the Irrigated Farmland of Piedmont Region of North China Plain
摘要
Abstract
In this paper, the observation equipment of deep soil water profile in the Luancheng ecological experiment station of Chinese Academy of Sciences w as used to perform in2situ measurements of the soil w ater content in the dept h of 15. 4 m of soil profile for one continuous year based on the neutron moisture view er. T he deep soil and w ater sam ples were col ected regularly, which were used to perform quantitative analysis of the variation of soil wat er content and deep drainage. The results show ed that the distribution of soil moisture in the vertical profile is controled by the soil texture, and the variability of soil moisture de2 creases w ith the depth of soil. Meanwhile, the distribut ion of soil moisture w as affected by the precipit ation and irrigation within a year. Due to the effects of precipitation ( irrigation) and evapot ranspiration, dramatic variations of soil moisture occurred in the root zone. However, t he response of soil moisture to the precipit at ion w as delayed below the root zone. During t he observation period, there w as abundant w ater for the whole soil profile in the depth of 15. 5 m and the soil water storage increased by 216 mm. H ow ever, the soil water cont ent decreased in the w heat seasons and the soil water storage decreased by 208 mm. Est imated by the chloride mass balance method, the deep drainage w as almost 65 mm in t he depth of 560 cm of the soil prof ile.关键词
华北平原/农田/土壤水分/土壤水贮量/渗漏量Key words
North China Plain/farmland/soil w ater content/soil water st orage/drainage分类
农业科技引用本文复制引用
王茜,沈彦俊,裴宏伟,田浩业,李放,裴源生..华北山前平原灌溉农田深层土壤水分动态特征及渗漏量估算[J].南水北调与水利科技,2013,(1):155-160,6.基金项目
中国科学院创新领域前沿项目( KSCX22EW2J5)资助 （ KSCX22EW2J5）
