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Soil properties mediate ecosystem intrinsic water use efficiency and stomatal conductance via taxonomic diversity and leaf economic spectrum
Wang, Jing1; Wen, Xuefa1,3; Lyu, Sidan1; Guo, Qingjun2,3
2021-08-20
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume783Pages:10
Corresponding AuthorWen, Xuefa(wenxf@igsnrr.ac.cn) ; Lyu, Sidan(lvsidan@igsnrr.ac.cn)
AbstractThe interactions between plants and soils lead to complex feedbacks that regulate intrinsic water use efficiency (iWUE) and stomatal conductance (gs) at ecosystem level and reflect water constraints on plant productivity. However, the relationships among soil properties, biodiversity, and leaf functional traits contributing to the variability in ecosystem iWUE and gs remain largely unknown. To elucidate these relationships, we used principal component analysis to reduce soil properties to a fertility spectrum and a limiting-resource spectrum across grassland, and early-, mid- and late-successional forests in a karst catchment. Leaf functional traits at community level were calculated based on leaf biomass, and were reduced to an economic spectrum and a limiting-resource spectrum. Leaf carbon (delta C-13) and oxygen (delta O-18) stable isotopes at community levels were used as proxies for ecosystem iWUE and &The effects of soil properties, biodiversity (taxonomic, functional and phylogenetic diversity) and leaf traits on delta C-13 and delta O-18 were evaluated using structural equation models. Our results showed that variability in ecosystem iWUE and gs was determined overwhelmingly by indirect effects of soil properties via two different pathways: the soil fertility spectrum, determining the number of coexisting species (taxonomic diversity) and turnover of species (leaf economic spectrum), and the soil limiting-resource spectrum, shaping the specific phylogenetic lineages (phylogenic diversity). In addition, delta C-13 and delta O-18 were constrained by the interactive effects of leaf economic spectrum, and taxonomic and phylogenic diversity; total effects of biodiversity on delta C-13 and delta O-18 were larger than those of leaf economic spectrum. Our study highlighted the critical role of the evaluating interaction relationships between leaf functional traits, biodiversity metrics and soil properties in understanding the mechanisms of ecosystem function responding to environmental change. (C) 2021 Published by Elsevier B.V.
KeywordBiodiversity Leaf functional trait Soil fertility Soil limiting-resource iWUE gs
DOI10.1016/j.scitotenv.2021.146968
WOS KeywordOXYGEN-ISOTOPE COMPOSITION ; PRIMARY PRODUCTIVITY ; PLANT DIVERSITY ; PHYLOGENETIC DIVERSITY ; STABLE OXYGEN ; BIODIVERSITY ; TRAITS ; CARBON ; NITROGEN ; BIOMASS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41830860] ; National Natural Science Foundation of China[32001137] ; National Natural Science Foundation of China[41571130043]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000656998000015
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/164079
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWen, Xuefa; Lyu, Sidan
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Ctr Environm Remediat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Jing,Wen, Xuefa,Lyu, Sidan,et al. Soil properties mediate ecosystem intrinsic water use efficiency and stomatal conductance via taxonomic diversity and leaf economic spectrum[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,783:10.
APA Wang, Jing,Wen, Xuefa,Lyu, Sidan,&Guo, Qingjun.(2021).Soil properties mediate ecosystem intrinsic water use efficiency and stomatal conductance via taxonomic diversity and leaf economic spectrum.SCIENCE OF THE TOTAL ENVIRONMENT,783,10.
MLA Wang, Jing,et al."Soil properties mediate ecosystem intrinsic water use efficiency and stomatal conductance via taxonomic diversity and leaf economic spectrum".SCIENCE OF THE TOTAL ENVIRONMENT 783(2021):10.
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