【摘要】 采用水量平衡方法和集水区技术,利用2006年至2009年的观测资料,研究了豫南低山区落叶阔叶林生态系统的水量平衡.结果表明:系统年平均输入降水为1200.2 mm,其中79%集中在4-9月,主要支出项为径流和蒸散,分别为444.4 mm和754.3 mm,各占降水的37.0%和62.9%,土壤蓄水变化量仅为1.5 mm;林冠层对降水的分配中,林冠截留量407.4 mm,截留率33.9%,穿透水和树干茎流量分别为761.7 mm和31.1 mm,各占降水量的63.5%和2.6%.集水区年均径流输出总量为444.4 mm,其中地下径流420.9 mm,地表径流仅23.5 mm.落叶阔叶林生态系统具有良好的水文生态效应。更多还原

【Abstract】 Using the method of water balance,watershed experiment technique and site-specific observation,based on the data and information collected from 2006 to 2009,the water balance of deciduous broad-leaved forest ecosystem in southern mountain of henan province is studied.The result shows:Average annual precipitation is 1200.2 mm,79% of them concentrated in April to September,and 37.0%and 62.9%of which allocated to total runoff(444.4 mm) and evapotranspiration(754.3 mm),annual soil moisture variation is only 1.5 mm;Regarding to the precipitation distribution of crown acting surface,crown interception is 407.4 mm,and the ratio is 33.9%,the through fall is 761.7 mm,the stem flow is 31.1 mm,and accounting for 63.5%and 2.6%,respectively;the total runoff is 444.4 mm,in which the underground runoff is 420.9 mm,the surface runoff is only 23.5 mm.Deciduous broad-leaved forest ecosystem have good hydrological and ecological effects.更多还原