豫南山区典型森林类型土壤水分变化规律研究

采用连续定位观测的研究方法,对豫南低山区天然落叶阔叶林土壤水分变化规律进行了研究.结果表明,10cm,20cm,30cm,50cm四个不同测定深度处的土壤水分随季节变化均发生明显的周期性变异,土壤水分含量50cm20cm30cm10cm;变异幅度随深度增加而增加,即50cm30cm20cm10cm;垂直变化差异显著.土壤水分含量与降雨量存在显著的回归关系,10cm,20cm,30cm,50cm四个测定深度土壤水分含量与降雨量的线性回归方程相关系数分别达到0.727,0.772,0.786,0.626.

Study on Variation of Soil Moisture of Typical Forestland in Southern Mountain of Henan Province

Author has studied on variation of soil moisture of natural deciduous broad-leaved forest in southern mountain of Henan province with continuing site-specific long-term observation.Result indicates the soil moisture of 10cm,20cm,30cm and 50cm different depth Follow seasonal variation.The soil humidity is:50cm>20cm>30cm>10cm;Extent increases with the depth:50cm>30cm>20cm>10cm;vertical changing is notable.The soil moisture there exists notable regression relation in rainfall.The correlation coefficients of linear regression equation of different soil water content and rainfall of four different soil humidity of 10cm,20cm,30cm and 50cm reaches respectively 0.727,0.772,0.786,0.626.