Global soil acidification impacts on belowground processes

doi:10.1088/1748-9326/ab239c

	Global soil acidification impacts on belowground processes
	Meng, Cheng 1,2; Tian, Dashuan 1; Zeng, Hui 2; Li, Zhaolei 1; Yi, Chuixiang 3; Niu, Shuli 1,4
刊名	ENVIRONMENTAL RESEARCH LETTERS
	2019-07-01
卷号	14 期号:7 页码:10
关键词	acid deposition soil cations meta-analysis soil pH soil respiration microbes
ISSN号	1748-9326
DOI	10.1088/1748-9326/ab239c
通讯作者	Niu, Shuli(sniu@igsnrr.ac.cn)
英文摘要	With continuous nitrogen (N) enrichment and sulfur (S) deposition, soil acidification has accelerated and become a global environmental issue. However, a full understanding of the general pattern of ecosystem belowground processes in response to soil acidification due to the impacting factors remains elusive. We conducted a meta-analysis of soil acidification impacts on belowground functions using 304 observations from 49 independent studies, mainly including soil cations, soil nutrient, respiration, root and microbial biomass. Our results show that acid addition significantly reduced soil pHby 0.24 on average, with less pH decrease in forest than non-forest ecosystems. The response ratio of soilpH was positively correlated with site precipitation and temperature, but negatively with initial soil pH. Soil base cations (Ca2+, Mg2+, Na+) decreased while non-base cations (Al3+, Fe3+) increased with soil acidification. Soil respiration, fine root biomass, microbial biomass carbon and nitrogen were significantly reduced by 14.7%, 19.1%, 9.6% and 12.1%, respectively, under acid addition. These indicate that soil carbon processes are sensitive to soil acidification. Overall, our meta-analysis suggests a strong negative impact of soil acidification on belowground functions, with the potential to suppress soil carbon emission. It also arouses our attention to the toxic effects of soil ions on terrestrial ecosystems.
资助项目	National Natural Science Foundation of China[31625006] ; National Key R&D Program of China[2017YFA0604802] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA23080302] ; International Collaboration Program of Chinese Academy of Sciences[131A11KYSB20180010]
WOS关键词	SIMULATED ACID-RAIN ; TERRESTRIAL ECOSYSTEMS ; ALUMINUM TOXICITY ; NITROGEN ENRICHMENT ; FOREST ; DEPOSITION ; RESPIRATION ; RESPONSES ; METAANALYSIS ; CARBON
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000476946400001
资助机构	National Natural Science Foundation of China ; National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; International Collaboration Program of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/58288]
专题	中国科学院地理科学与资源研究所
通讯作者	Niu, Shuli
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Peking Univ, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China 3.CUNY Queens Coll, Sch Earth & Environm Sci, Flushing, NY 11367 USA 4.Univ Chinese Acad Sci, Dept Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Meng, Cheng,Tian, Dashuan,Zeng, Hui,et al. Global soil acidification impacts on belowground processes[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(7):10.
APA	Meng, Cheng,Tian, Dashuan,Zeng, Hui,Li, Zhaolei,Yi, Chuixiang,&Niu, Shuli.(2019).Global soil acidification impacts on belowground processes.ENVIRONMENTAL RESEARCH LETTERS,14(7),10.
MLA	Meng, Cheng,et al."Global soil acidification impacts on belowground processes".ENVIRONMENTAL RESEARCH LETTERS 14.7(2019):10.