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1 底座入土深度(D)、底座边长(S)和测定时间(t)对土壤呼吸速率(SR)、土壤温度(ST)和土壤含水量(SWC)影响的重复测量方差分析结果

Table 1 Results of repeated measures ANOVA for the effects of collar buried depth (D), collar size (S), and time of measurement (t) on soil respiration (SR), soil temperature (ST), and soil water content (SWC)

处理 Treatment	响应变量 Response variable
处理 Treatment	SR	ST	SWC
t	506.6^***	2293.6^***	311.8^***
D	20.5^***	143.8^***	6.2^*
S	35.9^***	13.2^**	61.4^***
t × D	15.1^***	24.7^***	0.8^ns
t × S	6.2^**	4.3^*	5.5^**
D × S	0.6^ns	1.5^ns	1.2^ns
t × D × S	7.2^***	2.5^ns	0.2^ns