Variability of above-ground litter inputs alters soil physicochemical and biological processes: a meta-analysis of litterfall-manipulation experiments

doi:10.5194/bg-10-7423-2013

	Variability of above-ground litter inputs alters soil physicochemical and biological processes: a meta-analysis of litterfall-manipulation experiments
	Xu, S.; Liu, L. L.; Sayer, E. J.
	2013
发表期刊	BIOGEOSCIENCES
ISSN	1726-4170
卷号	10 期号:11 页码:7423-7433
摘要	Global change has been shown to alter the amount of above-ground litter inputs to soil greatly, which could cause substantial cascading effects on below-ground biogeochemical cycling. Despite extensive study, there is uncertainty about how changes in above-ground litter inputs affect soil carbon and nutrient turnover and transformation. Here, we conducted a meta-analysis on 70 litter-manipulation experiments in order to assess how changes in above-ground litter inputs alter soil physicochemical properties, carbon dynamics and nutrient cycles. Our results demonstrated that litter removal decreased soil respiration by 34%, microbial biomass carbon in the mineral soil by 39% and total carbon in the mineral soil by 10%, whereas litter addition increased them by 31, 26 and 10%, respectively. This suggests that greater litter inputs increase the soil carbon sink despite higher rates of carbon release and transformation. Total nitrogen and extractable inorganic nitrogen in the mineral soil decreased by 17 and 30%, respectively, under litter removal, but were not altered by litter addition. Overall, litter manipulation had a significant impact upon soil temperature and moisture, but not soil pH; litter inputs were more crucial in buffering soil temperature and moisture fluctuations in grassland than in forest. Compared to other ecosystems, tropical and subtropical forests were more sensitive to variation in litter inputs, as altered litter inputs affected the turnover and accumulation of soil carbon and nutrients more substantially over a shorter time period. Our study demonstrates that although the magnitude of responses differed greatly among ecosystems, the direction of the responses was very similar across different ecosystems. Interactions between plant productivity and below-ground biogeochemical cycling need to be taken into account to predict ecosystem responses to environmental change.
学科领域	Ecology ; Geosciences, Multidisciplinary
DOI	10.5194/bg-10-7423-2013
收录类别	SCI
语种	英语
WOS关键词	NET PRIMARY PRODUCTION ; DISSOLVED ORGANIC-MATTER ; FOREST FLOOR ; LEAF-LITTER ; RHIZOSPHERE RESPIRATION ; MICROBIAL BIOMASS ; TROPOSPHERIC O-3 ; TROPICAL FORESTS ; TREMBLING ASPEN ; ELEVATED CO2
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000327814700044
出版者	COPERNICUS GESELLSCHAFT MBH
文献子类	Article
出版地	GOTTINGEN
EISSN	1726-4189
资助机构	National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Chinese National Key Development Program for Basic Research ; National 1000 Young Talents Program
作者邮箱	Liu, Lingli/A-7771-2008 ; Liu, Lingli/Q-2867-2019 ; Sayer, Emma/B-2514-2010
作品OA属性	Green Submitted, Green Accepted, gold
引用统计	被引频次：167[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/2S10CLM1/27920
专题	植被与环境变化国家重点实验室
作者单位	1.[Xu, S.] Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.[Xu, S. 3.Liu, L. L.] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.[Sayer, E. J.] Open Univ, Dept Environm Earth & Ecosyst, Milton Keynes MK7 6AA, Bucks, England
推荐引用方式 GB/T 7714	Xu, S.,Liu, L. L.,Sayer, E. J.. Variability of above-ground litter inputs alters soil physicochemical and biological processes: a meta-analysis of litterfall-manipulation experiments[J]. BIOGEOSCIENCES,2013,10(11):7423-7433.
APA	Xu, S.,Liu, L. L.,&Sayer, E. J..(2013).Variability of above-ground litter inputs alters soil physicochemical and biological processes: a meta-analysis of litterfall-manipulation experiments.BIOGEOSCIENCES,10(11),7423-7433.
MLA	Xu, S.,et al."Variability of above-ground litter inputs alters soil physicochemical and biological processes: a meta-analysis of litterfall-manipulation experiments".BIOGEOSCIENCES 10.11(2013):7423-7433.

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