大青山不同植被土壤物理特征及有效水的研究

在2007年,本文采用环刀法和烘干恒重法对大青山不同植被类型土壤物理特性和旱、雨季土壤含水量进行了研究。结果表明:林地土壤物理特性明显好于荒草坡,白桦天然次生林要好于人工林;土壤旱雨季的含水量的变化与各时期内土壤有效水的排序有很大的不同,旱季土壤含水量大小排序为落叶松人工林、白桦天然次生林、灌木林、油松人工林、荒草坡,而土壤水分的有效性排序为落叶松人工林、荒草坡、白桦天然次生林、油松人工林、灌木林。在雨季的时候有林地的贮水能力要好于荒草坡和灌木林,雨季土壤含水量于其土壤理化性质排序一致,并且有显著的相关性,在土壤有效水和含水量方面降雨对油松和荒草坡的水分变化影响最大。

The Research on Soil Physical Properties and Penetrability in Different Vegetations of Daqing Mountain

The soil infiltration,physical properties and water content under different vegetations in Daqing Mountain were studied.The result indicated that the physical properties the forestland soil were all better than grass land,and Betula platyphylla is better than plantation forest.The change of soil water content was different with soil available water.The soil water content in dry season order was Larch plantation.Betula,Shrub land,Pine plantation grass land,but the soil available water was Larch plantation,grass land,Betula,Pine plantation shrub land.The water storage capacity in the rain season was better than grass and shrub land,and soil available water in pine plantation was better than other vegetation and shrub land.The rain influenced pine forest and grass land more than the other vegetation.