Vegetation type rather than climate modulates the variation in soil enzyme activities and stoichiometry in subalpine forests in the eastern Tibetan Plateau

doi:10.1029/2019JD031702

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Vegetation type rather than climate modulates the variation in soil enzyme activities and stoichiometry in subalpine forests in the eastern Tibetan Plateau
	He Qingqing 2,3; Wu Yanhong 3; Bing Haijian 3; Zhou Jun 3; Wang Jipeng 1
刊名	GEODERMA
	2020
卷号	374 页码:114424
关键词	Enzyme activity Enzyme stoichiometry Subalpine forests Environmental gradient Gongga Mountain
ISSN号	0016-7061
DOI	10.1029/2019JD031702
产权排序	1
文献子类	Article
英文摘要	Soil extracellular enzymes catalyze the rate limiting steps of organic matter decomposition, and enzyme stoichiometry has been used to reflect microbial resource acquisition strategies. However, the patterns and key driving factors of soil enzyme activities and stoichiometry in subalpine forests, which are areas sensitive to global changes, remain unclear. In this study, rhizosphere and bulk soils along two environmental gradients in the subalpine forests of Gongga Mountain, in the eastern Tibetan Plateau, including (1) a horizontal chrono-sequence with different vegetation types but a similar climate and (2) a vertical elevation gradient with the same vegetation type but different climates, were sampled during the growing and nongrowing seasons. The activities and stoichiometry of soil enzymes related to the microbial acquisition of carbon (C) (beta-1,4-glucosidase, BG), nitrogen (N) (beta-1,4-N-acetylglucosaminidase, NAG) and phosphorus (P) (acid phosphomonoesterase, AP) were analyzed to reveal their responses to environmental gradients. The results showed that enzyme activities and stoichiometry varied significantly among vegetation types, but were less affected by climate and root proximity. BG activity and ratios of BG to nutrient-acquiring enzymes were significantly higher in broadleaf forests than in coniferous forests. The differences in enzyme stoichiometry between vegetation types were weakly related to the microbial nutrient status (represented by the ratio of soil to microbial element stoichiometry) but might be explained by the higher proportion of ectomycorrhizal fungi in coniferous forests compared to broadleaf forests. The results of this study indicate that vegetation type was a major factor regulating soil enzyme activities and stoichiometry in the subalpine forests, possibly via its influences on plant-associated microbial communities.
电子版国际标准刊号	2169-8996
资助项目	National Natural Science Foundation of China[41630751] ; Youth Innovation Promotion Association, Chinese Academy of Science[2017424] ; Science and Technology Planning Project of Sichuan Province[2018JY0163]
WOS关键词	ECOENZYMATIC STOICHIOMETRY ; NUTRIENT LIMITATION ; PHOSPHORUS LIMITATION ; ALTITUDINAL GRADIENT ; FUNGAL COMMUNITIES ; MICROBIAL BIOMASS ; GONGGA MOUNTAIN ; CARBON ; NITROGEN ; RHIZOSPHERE
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000540257900022
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Science ; Science and Technology Planning Project of Sichuan Province
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/34900]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者	Wu Yanhong; Bing Haijian
作者单位	1.College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, China 2.University of Chinese Academy of Sciences, Beijing 100049, China; 3.Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;
推荐引用方式 GB/T 7714	He Qingqing,Wu Yanhong,Bing Haijian,et al. Vegetation type rather than climate modulates the variation in soil enzyme activities and stoichiometry in subalpine forests in the eastern Tibetan Plateau[J]. GEODERMA,2020,374:114424.
APA	He Qingqing,Wu Yanhong,Bing Haijian,Zhou Jun,&Wang Jipeng.(2020).Vegetation type rather than climate modulates the variation in soil enzyme activities and stoichiometry in subalpine forests in the eastern Tibetan Plateau.GEODERMA,374,114424.
MLA	He Qingqing,et al."Vegetation type rather than climate modulates the variation in soil enzyme activities and stoichiometry in subalpine forests in the eastern Tibetan Plateau".GEODERMA 374(2020):114424.