Soil extracellular enzyme activity and stoichiometry in China's forests

doi:10.1111/1365-2435.13555

	Soil extracellular enzyme activity and stoichiometry in China's forests
	Zhou, Luhong 1; Liu, Shangshi 2,3; Shen, Haihua 2,3; Zhao, Mengying 2,3; Xu, Longchao 2,3; Xing, Aijun 2,3; Fang, Jingyun1,2
	2020
发表期刊	FUNCTIONAL ECOLOGY
ISSN	0269-8463
卷号	34 期号:7 页码:1461-1471
摘要	Ecoenzymatic stoichiometry links microbial decomposition with nutrient mineralization and improves our understanding of nutrient cycling in terrestrial ecosystems. Microbial C:N:P acquisition in the topsoil converged at a ratio of 1:1:1 in global ecosystems. However, whether the ratio of microbial acquisition is stable in forest soils, and is applicable among different soil depths remain unknown. Based on large-scale soil sampling in China's forests, we examined the patterns and environmental drivers of the eight most-widely measured enzyme activities and the relevant stoichiometry. We found that the ratio of C:N:P acquisition significantly deviated from 1:1:1. The specific enzyme activities (normalized by SOC) did not change significantly with latitude except those for xylosidase and acid phosphatase. Similarly, only the C:P acquisition ratio increased with latitude. Vertically, the specific activities of C-acquiring enzymes mainly increased, N-acquiring enzymes decreased and P-acquiring enzymes did not change with soil depth. Moreover, all ratios of microbial acquisition decreased, and the percentage of recalcitrant C increased significantly with increasing depth. Our study also showed that temperature and soil C:N ratio were the important factors in explaining the variations in specific enzyme activities and microbial nutrient acquisition, respectively. Our results indicated that no constant microbial C:N:P acquisition ratio can be widely recognized, and that SOC quality changed from labile to recalcitrant with depth. We highlight that depth-dependent enzymatic processes should be considered in future SOC dynamic models. A free Plain Language Summary can be found within the Supporting Information of this article.
关键词	deep soil extracellular enzyme activity forest ecosystem microbe-soil feedback stoichiometry
学科领域	Ecology
DOI	10.1111/1365-2435.13555
收录类别	SCI
语种	英语
WOS关键词	ORGANIC-MATTER DECOMPOSITION ; ECOENZYMATIC STOICHIOMETRY ; NUTRIENT ACQUISITION ; NITROGEN DEPOSITION ; MICROBIAL BIOMASS ; USE EFFICIENCY ; CLIMATE-CHANGE ; CARBON ; LIMITATION ; PHOSPHORUS
WOS研究方向	Environmental Sciences & Ecology
WOS记录号	WOS:000522495000001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2435
资助机构	Key Research Program of Frontier Sciences, CAS [QYZDY-SSW-SMC011] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31330012] ; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2018M641074] ; National Key Research and Development Program [2017YFC0503901]
作者邮箱	shen.haihua@ibcas.ac.cn ; jyfang@urban.pku.edu.cn
引用统计	被引频次：67[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/21839
专题	植被与环境变化国家重点实验室
作者单位	1.Peking Univ, Minist Educ, Coll Urban & Environm Sci, Beijing, Peoples R China 2.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Luhong,Liu, Shangshi,Shen, Haihua,et al. Soil extracellular enzyme activity and stoichiometry in China's forests[J]. FUNCTIONAL ECOLOGY,2020,34(7):1461-1471.
APA	Zhou, Luhong.,Liu, Shangshi.,Shen, Haihua.,Zhao, Mengying.,Xu, Longchao.,...&Fang, Jingyun.(2020).Soil extracellular enzyme activity and stoichiometry in China's forests.FUNCTIONAL ECOLOGY,34(7),1461-1471.
MLA	Zhou, Luhong,et al."Soil extracellular enzyme activity and stoichiometry in China's forests".FUNCTIONAL ECOLOGY 34.7(2020):1461-1471.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
1365-2435.13555.pdf（1687KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文