A global synthesis of the rate and temperature sensitivity of soil nitrogen mineralization: latitudinal patterns and mechanisms

doi:10.5194/bg-14-2155-2017

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	A global synthesis of the rate and temperature sensitivity of soil nitrogen mineralization: latitudinal patterns and mechanisms
	Liu, Yuan 1; Wang, Changhui 4; He, Nianpeng ; Wen, Xuefa ; Gao, Yang ; Li, Shenggong ; Niu, Shuli ; Butterbach-Bahl, Klaus ; Luo, Yiqi 2; Yu, Guirui
刊名	GLOBAL CHANGE BIOLOGY
	2017
卷号	23 期号:1 页码:455-464
关键词	activation energy global pattern mechanism mineralization nitrogen availability substrate quality temperature sensitivity
ISSN号	1354-1013
DOI	10.5194/bg-14-2155-2017
文献子类	Article
英文摘要	Soil net nitrogen (N) mineralization (N-min) is a pivotal process in the global N cycle regulating the N availability of plant growth. Understanding the spatial patterns of N-min, its temperature sensitivity (Q(10)) and regulatory mechanisms is critical for improving the management of soil nutrients. In this study, we evaluated 379 peer-reviewed scientific papers to explore how N-min and the Q(10) of N-min varied among different ecosystems and regions at the global scale. The results showed that N-min varied significantly among different ecosystems with a global average of 2.41 mg N soil kg(-1) day(-1). Furthermore, N-min significantly decreased with increasing latitude and altitude. The Q(10) varied significantly among different ecosystems with a global average of 2.21, ranging from the highest found in forest soils (2.43) and the lowest found for grassland soils (1.67) and significantly increased with increasing latitude. Path analyses indicated that N-min was primarily affected by the content of soil organic carbon (C), soil C:N ratio, and clay content, where Q(10) was primarily influenced by the soil C:N ratio and soil pH. Furthermore, the activation energy (E-a) of soil N mineralization was significantly and negative correlated with the substrate quality index among all ecosystems, indicating the applicability of the carbon quality temperature hypothesis to soil N mineralization at a global scale. These findings provided empirical evidence supporting that soil N availability, under global warming scenarios, is expected to increase stronger in colder regions as compared with that low-latitude regions due to the higher Q(10). This may alleviate the restriction of N supply for increased primary productivity at higher latitudes.
学科主题	Environmental Sciences & Ecology ; Geology
电子版国际标准刊号	1365-2486
出版地	HOBOKEN
WOS关键词	ORGANIC-MATTER DECOMPOSITION ; MICROBIAL BIOMASS CARBON ; N-MINERALIZATION ; RESPIRATION ; PHOSPHORUS ; LIMITATION ; WATER ; DEPENDENCE ; VEGETATION ; GRADIENT
语种	英语
出版者	WILEY
WOS记录号	WOS:000400180500002
资助机构	Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41571130043, 31270519, 31470506, 31290221] ; Program for Kezhen Distinguished Talents in Institute of Geographic Sciences and Natural Resources Research, CAS [2013RC102] ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/22167]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Atmospher Environm Res, D-82467 Garmisch Partenkirchen, Germany 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA
推荐引用方式 GB/T 7714	Liu, Yuan,Wang, Changhui,He, Nianpeng,et al. A global synthesis of the rate and temperature sensitivity of soil nitrogen mineralization: latitudinal patterns and mechanisms[J]. GLOBAL CHANGE BIOLOGY,2017,23(1):455-464.
APA	Liu, Yuan.,Wang, Changhui.,He, Nianpeng.,Wen, Xuefa.,Gao, Yang.,...&Yu, Guirui.(2017).A global synthesis of the rate and temperature sensitivity of soil nitrogen mineralization: latitudinal patterns and mechanisms.GLOBAL CHANGE BIOLOGY,23(1),455-464.
MLA	Liu, Yuan,et al."A global synthesis of the rate and temperature sensitivity of soil nitrogen mineralization: latitudinal patterns and mechanisms".GLOBAL CHANGE BIOLOGY 23.1(2017):455-464.