小黑杨人工幼龄林对土壤水消耗量的研究

Study of Young Growth of Populus simonii×nigra on Soil Water Consumption

通过观测和理论推导,分析研究了小黑杨幼龄林对土壤水的实际消耗量。结果表明:嫩江流域中下游段小黑杨10年生幼龄林在生长季实际蒸散量为330.1 mm,蒸散与降水比为73.4%;在干旱的春季,水分亏缺比较严重,5～6月亏缺37.2 mm。

By determination and theory, actual consumption of Populus simonii x nigra was analysed and studied. Results show that actual evapotranspiration of 10-year-old young growth of Populus simonii x nigra is 330.1 mm in middle and lower reaches of Nenjiang valley, the ratio of evapotranspiration to precipitation is 73.4%. Water deficit is severer in arid spring and is 37.2 mm in May and June.