长尺度气候变化下土壤钾素演变规律的研究——以泾河中游将军村黄土剖面为例

吴利杰, 于娟, 石建省, 王成敏, 毕志伟, 郭娇

Study on the Evolution Law of Potassium with Long Time Scale Climate Change in Jiangjun Loess Section of the Middle Reaches of the Jinghe River

Li-jie WU, Juan YU, Jian-sheng SHI, Cheng-min WANG, Zhi-wei BI, Jiao GUO

表2 各形态钾素含量与气候单要素的曲线拟合结果

Tab.2 The curve fitting results of between the forms of potassium and the annual precipitationandthe annual average temperature

拟合回归方程 Fitting regression equation	相关系数 Correlation coefficient	拟合度 Fitting degree	F值 F value	p-值 p-value
AK_P=19.125 $\begin{matrix} {e^{0.002 5}}^{P} \end{matrix}$	0.828 7	0.686 7	252.633 6	0.000 1
SAK_P=382.08 $\begin{matrix} {e^{0.001 8}}^{P} \end{matrix}$	0.853 5	0.728 4	330.035 0	0.000 1
IK_P=17374 $\begin{matrix} {e^{0.000 2}}^{P} \end{matrix}$	0.301 7	0.091 0	12.861 6	0.000 5
TK_P=17426 $\begin{matrix} {e^{0.000 3}}^{P} \end{matrix}$	0.413 5	0.171 0	26.142 4	0.000 1
AK_T=26.831 $\begin{matrix} {e^{0.116 7}}^{T} \end{matrix}$	0.831 6	0.691 6	257.975 9	0.000 1
SAK_T=382.08 $\begin{matrix} {e^{0.001 8}}^{T} \end{matrix}$	0.856 4	0.733 4	338.471 8	0.000 1
IK_T=17954 $\begin{matrix} {e^{0.010 7}}^{T} \end{matrix}$	0.299 0	0.089 4	12.611 1	0.000 5
TK_T=18235 $\begin{matrix} {e^{0.015 1}}^{T} \end{matrix}$	0.411 5	0.169 3	25.843 0	0.000 1