摘要
包气带水对植被的生长起到至关重要的作用，同时也是大气降水、地表水与地下水相互转化的媒介。影响包气带含水率变化的因素比较复杂，利用室外监测方法，监测包气带含水率与气象要素变化值，分析了包气带垂向含水率的变化特征：近地表包气带含水率大体与气温呈负相关关系；在地面以下5～15cm含水率逐渐增加，在15cm处达到最大，15-30cm含水率有减小的趋势。
Water in unsaturated zone is important to growth of vegetations and it is the medium that is in charge of the transformation of groundwater, surface water and precipitation mutually, its influencing factors is complicated. After monitoring water content in unsaturated zone and the variational value of meteorological factors by using outdoor monitoring methods, the analysis of characteristics of vertical water content in unsaturated zone has been drawn： As the temperature rising up, water content in unsaturated zone is generally reduced; in 5-15 cm below the ground surface shows a gradual increase in water content which achieves the top amount in 15 cm and decreases in 15-30 cm.
出处
《黑龙江水专学报》
2009年第2期16-20,共5页
Journal of Heilongjiang Hydraulic Engineering College
基金
黑龙江大学青年科学基金(QT01)
黑龙江大学博士启动基金
十一五国家科技支撑计划重点项目三级专题(2006BAB14B04-06)
关键词
包气带
垂向含水率
日变化特征
试验
监测
unsaturated zone
vertical water content
diurnal variation characteristics
experiment
monitor
