土壤有机质对土壤水分保持及其有效性的控制作用

刘效东, 乔玉娜, 周国逸

Controlling action of soil organic matter on soil moisture retention and its availability

LIU Xiao-Dong, QIAO Yu-Na, ZHOU Guo-Yi

表2 不同土壤深度的土壤水分特征曲线的数学模型

Table 2 Mathematical models of soil water characteristic curves at different soil depths

林型 Forest type	土壤深度 Soil depth (cm)	数学模型¹⁾ Mathematical model¹⁾	决定系数 Determination coefficient (R²)
季风常绿阔叶林 Monsoon evergreen broad-leaved forest	0-10	θ= 25.081s^-0.172	0.992**
	10-20	θ = 23.283s^-0.161	0.986**
	20-40	θ= 22.807s^-0.142	0.987**
	40-60	θ = 20.608s^-0.143	0.987**
	60-80	θ = 19.080s^-0.153	0.990**
马尾松针阔叶混交林 Mixed Pinus massonianabroad- leaved forest	0-10	θ = 22.918s^-0.204	0.993**
	10-20	θ = 21.353s^-0.186	0.985**
	20-40	θ = 22.003s^-0.158	0.983**
	40-60	θ = 22.113s^-0.149	0.986**
	60-80	θ = 21.363s^-0.146	0.987**
马尾松针叶林 Pinus massonianaconiferous forest	0-10	θ = 17.947s^-0.163	0.995**
	10-20	θ = 13.126s^-0.198	0.988**
	20-40	θ = 15.576s^-0.166	0.989**
	40-60	θ = 18.355s^-0.132	0.987**
	60-80	θ = 18.196s^-0.140	0.990**