排露沟流域不同海拔灌丛土壤碳氮磷化学计量特征

牟文博, 徐当会, 王谢军, 敬文茂, 张瑞英, 顾玉玲, 姚广前, 祁世华, 张龙, 苟亚飞

Soil carbon, nitrogen, and phosphorus stoichiometry along an altitude gradient in shrublands in Pailugou watershed, China

MOU Wen-Bo, XU Dang-Hui, WANG Xie-Jun, JING Wen-Mao, ZHANG Rui-Ying, GU Yu-Ling, YAO Guang-Qian, QI Shi-Hua, ZHANG Long, GOU Ya-Fei

表3 排露沟流域0-10 cm、10-20 cm层土壤养分化学计量特征和环境因子的相关分析

Table 3 Correlation analysis between soil nutrient stoichiometry and environmental factors for both 0-10 cm and 10-20 cm soil layers in Pailugou watershed

土壤养分 Soil nutrient	土层 Soil layer (cm)	SOC	TN	TP	SOC:TP	TN:TP	SOC:TN
TN	0-10	0.734^***
TN	10-20	0.570^**
TP	0-10	-0.568^**	-0.140
TP	10-20	-0.581^**	-0.277
SOC:TP	0-10	0.901^***	0.516^*	-0.846^***
SOC:TP	10-20	0.911^***	0.457^*	-0.857^***
TN:TP	0-10	0.866^***	0.746^***	-0.758^***	0.915^***
TN:TP	10-20	0.730^***	0.728^***	-0.846^***	0.864^***
SOC:TN	0-10	0.591^**	-0.065	-0.684^**	0.755^***	0.438^*
SOC:TN	10-20	0.734^***	-0.123	-0.520^*	0.739^***	0.305
pH	0-10	0.183	-0.154	-0.661^**	0.419	0.331	0.410
pH	10-20	0.342	0.187	-0.696^***	0.561^**	0.601^**	0.259
生长季总降水量 Total precipitation of the growing season	0-10	0.660^**	0.271	-0.943^***	0.885^***	0.798^***	0.717^***
生长季总降水量 Total precipitation of the growing season	10-20	0.666^**	0.280	-0.957^***	0.893^***	0.823^***	0.625^**
生长季平均气温 Mean air temperature of the growing season	0-10	0.600^**	0.202	-0.929^***	0.838^***	0.742^***	0.709^***
生长季平均气温 Mean air temperature of the growing season	10-20	0.581^**	0.250	-0.933^***	0.829^***	0.792^***	0.553^**
灌丛地上生物量 Aboveground biomass of shrubs	0-10	0.509^*	0.786^***	0.064	0.245	0.452*	-0.201
灌丛地上生物量 Aboveground biomass of shrubs	10-20	0.383	0.590^**	-0.042	0.214	0.338	-0.060