降水量对半干旱沙质草地土壤胞外酶活性的影响

景家琪, 刘新平, 何玉惠, 丰洁, 胡鸿姣, 徐远志, 张尧

Influence of precipitation on soil enzyme activity in sandy grasslands

Jiaqi Jing, Xinping Liu, Yuhui He, Jie Feng, Hongjiao Hu, Yuanzhi Xu, Yao Zhang

图5 降水变化下土壤理化性质-植被特征-土壤酶活性的相互关系 注：CK为自然降水对照组；P+60%、P+30%、P-30%和P-60%分别代表增加自然降水的60%、增加自然降水的30%、减少自然降水的30%以及减少自然降水的60%；NAG为β-N-乙酰氨基葡萄糖苷酶；CE为碳相关酶；CBH为纤维二糖水解酶；ALP为碱性磷酸酶；SWC为土壤含水量；SEC为土壤电导率；VA为酶化学计量的矢量夹角；BGB为地上生物量；TN为全碳

Fig.5 Relationship between soil physical and chemical properties， vegetation characteristics and soil enzyme activities under precipitation change