<strong>2001</strong>—<strong>2020</strong>年毛乌素沙地植被净初级生产力

2001—2020年毛乌素沙地植被净初级生产力

管悦汝, 白俊武, 李一琼, 杨朝辉, 时浩南

Net primary productivity of vegetation in the Mu Us Sandy Land in 2001-2020

Yueru Guan, Junwu Bai, Yiqiong Li, Zhaohui Yang, Haonan Shi

表2 植被NPP变化的驱动因素判定标准及贡献率计算方法

Table 2 Criteria for determining the driving factors of vegetation NPP changes and methods for calculating contribution rates

Slope ( $N P P_{o b s})$	驱动因素的划分标准		驱动因素的贡献率/%
Slope ( $N P P_{o b s})$	Slope ( $N P P_{C C}$ )	Slope ( $N P P_{H A}$ )	气候变化	人类活动
>0	>0	>0	$\frac{S l o p e (N P P_{C C})}{S l o p e (N P P_{o b s})}$	$\frac{S l o p e (N P P_{H A})}{S l o p e (N P P_{o b s})}$
	>0	<0	100	0
	<0	>0	0	100
<0	<0	<0	$\frac{S l o p e (N P P_{C C})}{S l o p e (N P P_{o b s})}$	$\frac{S l o p e (N P P_{H A})}{S l o p e (N P P_{o b s})}$
	<0	>0	100	0
	>0	<0	0	100