底座入土深度和面积对典型草原土壤呼吸测定结果的影响

李建军,刘恋,陈迪马,许丰伟,程军回,白永飞

Effects of collar size and buried depth on the measurement of soil respiration in a typical steppe

LI Jian-Jun,LIU Lian,CHEN Di-Ma,XU Feng-Wei,CHENG Jun-Hui,BAI Yong-Fei

表2 底座入土深度和底座边长对生长季土壤呼吸速率(SR)、土壤温度(ST)和土壤含水量(SWC)单次测量结果的单因素方差分析

Table 2 The variables to collar buried depth and side length of the square collar on soil respiration rate (SR), soil temperature (ST), and soil water content (SWC) of each time depend on one-way ANOVA

日期 Date	处理 Treatment	SR	ST	SWC
2013-06-24	D₂S₁₅	4.22 ± 0.10^ab	15.83 ± 0.08^b	17.12 ± 1.30^a
	D₅S₁₅	4.58 ± 0.11^a	18.08 ± 0.27^a	15.52 ± 0.75^a
	D₂S₃₀	4.10 ± 0.16^b	16.33 ± 0.14^b	17.50 ± 1.00^a
	D₅S₃₀	4.52 ± 0.12^a	17.98 ± 0.13^a	15.92 ± 0.8^a
2013-07-06	D₂S₁₅	5.68 ± 0.52^a	18.05 ± 0.10^c	20.67 ± 1.43^a
	D₅S₁₅	4.79 ± 0.16^b	19.83 ± 0.11^a	17.20 ± 1.05^a
	D₂S₃₀	4.58 ± 0.11^b	18.83 ± 0.08^b	19.02 ± 1.36^a
	D₅S₃₀	4.69 ± 0.20^b	19.73 ± 0.05^a	19.03 ± 0.80^a
2013-07-22	D₂S₁₅	8.10 ± 0.18^a	23.27 ± 0.24^c	26.68 ± 0.4^a
	D₅S₁₅	6.00 ± 0.06^b	23.78 ± 0.07^bc	24.17 ± 0.21^b
	D₂S₃₀	6.29 ± 0.22^b	24.13 ± 0.26^ab	25.68 ± 0.43^a
	D₅S₃₀	5.37 ± 0.07^c	24.40 ± 0.20^a	22.72 ± 0.62^c
2013-08-14	D₂S₁₅	5.21 ± 0.22^a	20.43 ± 0.13^a	19.88 ± 1.53^a
	D₅S₁₅	5.26 ± 0.20^a	20.48 ± 0.08^a	18.63 ± 0.88^a
	D₂S₃₀	5.38 ± 0.31^a	20.43 ± 0.13^a	19.47 ± 1.19^a
	D₅S₃₀	3.96 ± 0.09^b	20.72 ± 0.09^a	15.23 ± 0.65^b
2013-09-15	D₂S₁₅	3.31 ± 0.15^a	12.33 ± 0.29^b	14.10 ± 0.83^ab
	D₅S₁₅	3.42 ± 0.11^a	14.83 ± 0.13^a	13.97 ± 0.43^ab
	D₂S₃₀	3.02 ± 0.13^a	11.55 ± 0.22^c	14.93 ± 1.3^a
	D₅S₃₀	3.17 ± 0.15^a	15.00 ± 0.17^a	11.77 ± 0.56^b
2013-10-16	D₂S₁₅	0.63 ± 0.03^a	7.65 ± 0.54^b	8.33 ± 0.42^a
	D₅S₁₅	0.66 ± 0.02^a	8.28 ± 0.27^ab	6.90 ± 0.38^b
	D₂S₃₀	0.67 ± 0.02^a	9.12 ± 0.52^a	8.27 ± 0.41^a
	D₅S₃₀	0.60 ± 0.04^a	8.88 ± 0.31^ab	6.48 ± 0.17^b