免耕和秸秆还田对我国土壤碳循环酶活性影响的荟萃分析

马立晓,李婧,邹智超,蔡岸冬,张爱平,李贵春,杜章留

Effects of No-Tillage and Straw Returning on Soil C-Cycling Enzyme Activities in China: Meta-Analysis

MA LiXiao,LI Jing,ZOU ZhiChao,CAI AnDong,ZHANG AiPing,LI GuiChun,DU ZhangLiu

图1 土壤碳循环酶活性的分布 SR：秸秆还田;NT：免耕;NTS：免耕+秸秆还田。下同。M、SE和N分别为平均值、标准误和样本量;曲线为数据的高斯分布,P为显著性检验概率水平

Fig. 1 Distribution of C-cycling enzyme activities SR: Straw returning; NT: No-tillage; NTS: Both no-tillage and straw returning. The same as below. M, SE and N denote the mean, standard errors and sample sizes, respectively. The curve is a Gaussian distribution fitted to frequency data and P<0.01 suit for the distribution