IB-CAS  > 植被与环境变化国家重点实验室
Responses of ecosystem water use efficiency to spring snow and summer water addition with or without nitrogen addition in a temperate steppe
Zhang, Xiaolin1; Zhai, Penghui2; Huang, Jianhui3; Zhao, Xiang; Dong, Kuanhu
2018
Source PublicationPLOS ONE
ISSN1932-6203
Volume13Issue:3
AbstractWater use efficiency (WUE) is an important indicator of ecosystem functioning but how ecosystem WUE responds to climate change including precipitation and nitrogen (N) deposition increases is still unknown. To investigate such responses, an experiment with a randomized block design with water (spring snowfall or summer water addition) and nitrogen addition was conducted in a temperate steppe of northern China. We investigated net ecosystem CO2 production (NEP), gross ecosystem production (GEP) and evapotranspiration (ET) to calculate ecosystem WUE (WUEnep = NEP/ET or WUEgep = GEP/ET) under spring snow and summer water addition with or without N addition from 2011 to 2013. The results showed that spring snow addition only had significant effect on ecosystem WUE in 2013 and summer water addition showed positive effect on ecosystem WUE in 2011 and 2013, as their effects on NEP and GEP is stronger than ET. N addition increased ecosystem WUE in 2012 and 2013 both in spring snow addition and summer water addition for its increasing effects on NEP and GEP but no effect on ET. Summer water addition had less but N addition had greater increasing effects on ecosystem WUE as natural precipitation increase indicating that natural precipitation regulates ecosystem WUE responses to water and N addition. Moreover, WUE was tightly related with atmospheric vapor-pressure deficit (VPD), photosynthetic active radiation (PAR), precipitation and soil moisture indicating the regulation of climate drivers on ecosystem WUE. In addition, it also was affected by aboveground net primary production (ANPP). The study suggests that ecosystem WUE responses to water and N addition is determined by the change in carbon process rather than that in water process, which are regulated by climate change in the temperate steppe of northern China.
Subject AreaMultidisciplinary Sciences
DOI10.1371/journal.pone.0194198
Indexed BySCI
Language英语
WOS KeywordVAPOR-PRESSURE DEFICIT ; PRECIPITATION GRADIENT ; EXPERIMENTAL MANIPULATIONS ; SEMINATURAL GRASSLAND ; CLIMATE-CHANGE ; CARBON FLUXES ; FOREST ; EVAPOTRANSPIRATION ; PATTERNS ; WINTER
WOS IDWOS:000427189300043
PublisherPUBLIC LIBRARY SCIENCE
SubtypeArticle
Publication PlaceSAN FRANCISCO
Funding OrganizationState Key Laboratory of Grassland Agro-ecosystems, Lanzhou University [SKLGAE201604] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31430016, 31670483, 31572452]
Corresponding Author Emailalleenzhang@126.com
OAgold, Green Published, Green Submitted
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/20376
Collection植被与环境变化国家重点实验室
Affiliation1.Shanxi Agr Univ, Coll Anim Sci & Vet Med, Taigu, Peoples R China
2.Lanzhou Univ, State Key Lab Grassland Agroecosyst, Lanzhou, Gansu, Peoples R China
3.Shanxi Agr Univ, Coll Agr, Taigu, Peoples R China
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xiaolin,Zhai, Penghui,Huang, Jianhui,et al. Responses of ecosystem water use efficiency to spring snow and summer water addition with or without nitrogen addition in a temperate steppe[J]. PLOS ONE,2018,13(3).
APA Zhang, Xiaolin,Zhai, Penghui,Huang, Jianhui,Zhao, Xiang,&Dong, Kuanhu.(2018).Responses of ecosystem water use efficiency to spring snow and summer water addition with or without nitrogen addition in a temperate steppe.PLOS ONE,13(3).
MLA Zhang, Xiaolin,et al."Responses of ecosystem water use efficiency to spring snow and summer water addition with or without nitrogen addition in a temperate steppe".PLOS ONE 13.3(2018).
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