氮和水分添加对内蒙古荒漠草原放牧生态系统土壤呼吸的影响

温超,单玉梅,晔薷罕,张璞进,木兰,常虹,任婷婷,陈世苹,白永飞,黄建辉,孙海莲

Effects of nitrogen and water addition on soil respiration in a Nei Mongol desert steppe with different intensities of grazing history

WEN Chao,SHAN Yu-Mei,YE Ru-Han,ZHANG Pu-Jin,MU Lan,CHANG Hong,REN Ting-Ting,CHEN Shi-Ping,BAI Yong-Fei,HUANG Jian-Hui,SUN Hai-Lian

表2 内蒙古荒漠草原土壤呼吸速率与10 cm土壤温度的关系

Table 2 Relationship between soil respiration rate and soil temperature at 10 cm depth in a Nei Mongol desert steppe

放牧强度 Grazing intensity	处理 Treatment	n	方程 Equation	R²	Q₁₀	p
CK	CKs	24	R_s = 0.35e^0.036^t	0.026	1.43	0.477
	N	24	R_s = 0.46e^0.029^t	0.023	1.33	0.554
	W	24	R_s = 0.27e^0.062^t	0.102	1.86	0.243
	NW	24	R_s = 0.17e^0.085^t	0.222	2.35	0.064
LG	CKs	24	R_s = 0.60e^0.020^t	0.008	1.22	0.560
	N	24	R_s = 0.54e^0.026^t	0.020	1.30	0.566
	W	24	R_s = 0.23e^0.069^t	0.141	2.00	0.204
	NW	24	R_s = 0.24e^0.075^t	0.193	2.11	0.097
MG	CKs	24	R_s = 0.51e^0.026^t	0.012	1.29	0.511
	N	24	R_s = 0.38e^0.041^t	0.051	1.51	0.369
	W	24	R_s = 0.25e^0.069^t	0.153	2.00	0.170
	NW	24	R_s = 0.17e^0.088^t	0.244	2.41	0.062
HG	CKs	24	R_s = 0.71e^0.012^t	0.003	1.13	0.546
	N	24	R_s = 0.36e^0.039^t	0.045	1.47	0.412
	W	24	R_s = 0.29e^0.060^t	0.135	1.83	0.147
	NW	24	R_s = 0.25e^0.074^t	0.213	2.09	0.072