毛乌素沙地不同类型生物结皮与下层土壤酶活性及土壤碳氮磷化学计量特征

樊瑾, 李诗瑶, 余海龙, 黄菊莹

Soil enzyme activity and carbon， nitrogen and phosphorus stoichiometric characteristics under different types of biocrusts and subsoil in Mu Us Sandland

Jin Fan, Shiyao Li, Hailong Yu, Juying Huang

表4 生物结皮及下层土壤生态化学计量特征和酶活性的相关性

Table 4 Correlation analysis of biocrust and subsoil ecological stoichiometric characteristics and enzyme activity

指标	Cat	Suc	Alp	Ure	SOC	TN	TP	C/N	C/P	N/P
过氧化氢酶Cat	1	0.929^**	0.878^**	0.938^**	0.713^**	0.885^**	0.913^**	0.413^*	0.447^**	0.600^**
蔗糖酶Suc		1	0.821^**	0.949^**	0.738^**	0.873^**	0.881^**	0.465^**	0.498^**	0.588^**
碱性磷酸酶Alp			1	0.854^**	0.703^**	0.791^**	0.842^**	0.480^**	0.511^**	0.587^**
脲酶Ure				1	0.739^**	0.853^**	0.898^**	0.517^**	0.492^**	0.551^**
有机碳SOC					1	0.829^**	0.690^**	0.728^**	0.846^**	0.743^**
全氮TN						1	0.811^**	0.387^*	0.603^**	0.814^**
全磷TP							1	0.498^**	0.365^*	0.441^**
C/N								1	0.789^**	0.422^*
C/P									1	0.820^**
N/P										1