半干旱草原土壤呼吸组分区分与菌根呼吸的贡献

李伟晶,陈世苹,张兵伟,谭星儒,王珊珊,游翠海

Partitioning of soil respiration components and evaluating the mycorrhizal contribution to soil respiration in a semiarid grassland

Wei-Jing LI,Shi-Ping CHEN,Bing-Wei ZHANG,Xing-Ru TAN,Shan-Shan WANG,Cui-Hai YOU

表1 浅环(SR_sc)、深环(SR_dc)和菌丝环呼吸(SR_hc)实测值与土壤温度(T_s)和含水量(SWC)拟和方程及相关参数(N, R²和p值)

Table 1 Functions and model fit parameters (N, R² and p-values) between measured soil respiration of shallow collar (SR_sc), deep collar (SR_dc), and hyphae collar (SR_hc) with soil temperature (T_s) and soil water content (SWC)

年份 Year	土壤环类型 Collar type	样本数量 N	方程 Function	R²	p
2014	浅环 Shallow collar	64	Y = 0.032e^0.098^T^s(-0.084SWC² + 2.70SWC)	0.82	< 0.000 1
	深环 Deep collar	64	Y = 0.011e^0.110^T^s(0.032SWC² + 1.20SWC)	0.75	< 0.000 1
	菌丝环 Hyphae collar	64	Y = 0.011e^0.099^T^s(0.082SWC² + 2.00SWC)	0.72	< 0.000 1
2015	浅环 Shallow collar	60	Y = 0.020e^0.109^T^s(-0.037SWC² + 2.90SWC)	0.87	< 0.000 1
	深环 Deep collar	60	Y = 0.011e^0.108^T^s(0.043SWC² + 1.55SWC)	0.86	< 0.000 1
	菌丝环 Hyphae collar	60	Y = 0.009e^0.113^T^s(0.045SWC² + 2.65SWC)	0.89	< 0.000 1
2016	浅环 Shallow collar	36	Y = 0.095e^0.053^T^s(-0.090SWC² + 2.40SWC)	0.44	< 0.000 1
	深环 Deep collar	36	Y = 0.032e^0.049^T^s(-0.064SWC² + 2.90SWC)	0.37	< 0.000 1
	菌丝环 Hyphae collar	36	Y = 0.061e^0.043^T^s(-0.043SWC² + 2.30SWC)	0.28	< 0.000 1