短期施氮肥降低杉木幼林土壤的根系和微生物呼吸

王清奎, 李艳鹏, 张方月, 贺同鑫

Short-term nitrogen fertilization decreased root and microbial respiration in a young Cunninghamia lanceolata plantation

WANG Qing-Kui,LI Yan-Peng,ZHANG Fang-Yue,HE Tong-Xin

表4 杉木幼林土壤呼吸速率与土壤温度和含水量的不同关系模型

Table 4 Parameters of different soil respiration models in a young Cunninghamia lanceolata plantation

	处理 Treatment	R_s = ae^bT			R_s = aW + b			R_s = ae^bTW^c
	处理 Treatment	a	b	R²	a	b	R²	a	b	c	R²
土壤总呼吸 Total soil respiration	对照 Control	0.474	0.067	0.714	-0.022	2.242	0.055	0.182	0.070	0.308	0.712
土壤总呼吸 Total soil respiration	施氮 N fertilization	0.425	0.059	0.694	-0.018	1.760	0.065	0.165	0.066	0.288	0.699
微生物呼吸 Microbial respiration	对照 Control	0.335	0.071	0.795	-0.023	1.920	0.101	0.156	0.067	0.273	0.797
微生物呼吸 Microbial respiration	施氮 N fertilization	0.319	0.061	0.721	-0.052	1.161	0.010	0.117	0.064	0.314	0.738