祁连山青海云杉林水量平衡的研究

在多年观测研究的基础上,利用水量平衡的方法和原理研究了祁连山森林主要类型青海云杉林的降水、截留、干流、蒸发散的分配过程及变化规律,结果表明:全年降水为433.5mm、透流量287.37mm、干流0.294mm、截留量145.83mm,分别占降水量的66.29%、0.068%、33.64%;径流量为239.98mm,占全年降水的55.36%;蒸发散量为156.54mm,占降水量的36.11%;土壤储水量增量23.63mm,枯落层持水量7.92mm,分别占降水的5.45%和1.83%。

RESEARCH ON WATER BALANCE OF PICEA CRASSIFOLIA FORESTS IN QILIAN MOUNTAINS

Based on observation and study of many years,transpiration and distribution processes of water in water balance of picea crassifolia forests in Qilian Mountains were studied by water balance methods.The spatial and seasonal changes in the components of water balance were determined.The results indicated that the total precipitation was 433.5mm and the throughfall 287.37 mm;stemflow 0.294 mm, interception 145.83 mm,taking up to 66.29%,0.068% and 33.64% of the total precipitation respectively and the runoff was 239.98 mm which took up to 55.36% of precipitation.Evapotranspiration,water storage in soil and that in litter were 156.54 mm,23.63 mm and 7.92 mm respectively,taking up to 36.11%,5.45% and 1.83% of the precipitation respectively.