【摘要】 采用定位研究的方法,对25年生落叶松人工林的林冠截留、林木蒸腾、林地蒸发及土壤径流等项目进行了研究和测定。结果表明在生长季内,落叶松人工林对大气降雨的截留损失总量为229.5mm,占同期降雨量的1/3;林木蒸腾是土壤水分输出的主要形式,土壤径流以壤中流和地下径流为主,地表径流很少发生;林地土壤水分的变化量不足5%,土壤水分的输入与输出基本处于平衡状态。更多还原

【Abstract】 Based on located studies,the interception,evapotranspiration,runoff and water balance in a larch plantation were studied.The results showed that the total water interception amounts of the larch plantation is 229.5 mm in growing season 34% of the rainfall of the corresponding period.The forest transpiration is the main part of the output of the soil water,about 65.8% of the total.The water flow in soils and underground runoff are the main part of the runoff,the surface runoff do hardly occure.As the change of the soil water is not enough 5% of the total,the input and output of the soil water is basically in a balance.更多还原