冬季增温和减雪对黄土高原典型草原土壤养分和细菌群落组成的影响

毛瑾, 朵莹, 邓军, 程杰, 程积民, 彭长辉, 郭梁

Influences of warming and snow reduction in winter on soil nutrients and bacterial communities composition in a typical grassland of the Loess Plateau

MAO Jin, DUO Ying, DENG Jun, CHENG Jie, CHENG Ji-Min, PENG Chang-Hui, GUO Liang

表1 冬季土壤冻融循环次数在不同处理下的比较

Table 1 Comparison of the numbers of soil freeze-thaw cycles under different treatments in winter

处理 Treatment	年份-月份 Year-month	冻融循环次数 Numbers of freeze-thaw cycle	总计 Sum
对照 CK	2018-11	2	29
	2018-12	0
	2019-01	0
	2019-02	8
	2019-03	19
增温 W	2018-11	7	53
	2018-12	22
	2019-01	0
	2019-02	24
	2019-03	0
减雪 S	2018-11	8	51
	2018-12	21
	2019-01	9
	2019-02	13
	2019-03	0
互作 WS	2018-11	2	61
	2018-12	16
	2019-01	14
	2019-02	23
	2019-03	6