Study on water balance of Pinus sylvestris var.mongolica planted forest in Zhanggutai area
To uncover the water balance law of Pinus sylvestris var.mongolica planted forest in Zhanggutai area in Liaoning province,and to provide scientific direction for the management,based on the data and information collected from 2010 and 2011,the precipitation distribution and evapotranspiration of the ecosystem were studied in 32 years old(and 404 plants per ha.) planted forest by using the method of water-balance.The results showed: the gross of throughfall,stemflow,and the canopy interception was 422.7mm,0.8mm,28.1mm separately,the proportionment compare to the gross of annual precipitation(451.5mm)was 93.6%,0.2%,6.2%.The crown transpiration,Liter+ Understory vegetation+Soil evapotranspiration(LUS),and soil water storage were 116.1mm,287.3mm,20.1mm separately,the proportionment compare to the gross of annual precipitation(451.5mm) was 25.7%,63.6%,4.5%.he crown transpiration was 28.8% of evapotranspiration of forest land,and LUS was 71.2%.