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Global soil acidification impacts on belowground processes
Meng, Cheng1,2; Tian, Dashuan1; Zeng, Hui2; Li, Zhaolei1; Yi, Chuixiang3; Niu, Shuli1,4
2019-07-01
Source PublicationENVIRONMENTAL RESEARCH LETTERS
ISSN1748-9326
Volume14Issue:7Pages:10
Corresponding AuthorNiu, Shuli(sniu@igsnrr.ac.cn)
AbstractWith 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.
Keywordacid deposition soil cations meta-analysis soil pH soil respiration microbes
DOI10.1088/1748-9326/ab239c
WOS KeywordSIMULATED ACID-RAIN ; TERRESTRIAL ECOSYSTEMS ; ALUMINUM TOXICITY ; NITROGEN ENRICHMENT ; FOREST ; DEPOSITION ; RESPIRATION ; RESPONSES ; METAANALYSIS ; CARBON
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000476946400001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/58289
Collection中国科学院地理科学与资源研究所
Corresponding AuthorNiu, Shuli
Affiliation1.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
Recommended Citation
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.
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