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Ecosystem carbon exchange under different land use on the Qinghai-Tibetan plateau
Luo, C. -Y.1; Zhu, X. -X.1,4; Wang, S. -P.2,3; Cui, S. -J.1,4; Zhang, Z. -H.1,4; Bao, X. -Y.4; Zhao, L.1; Li, Y.1; Zhao, X. -Q.1
2015-12-01
Source PublicationPHOTOSYNTHETICA
Volume53Issue:4Pages:527-536
SubtypeArticle
AbstractThere is a great uncertainty about the effect of land use change on grassland ecosystem in the Tibetan Plateau. Net ecosystem carbon exchange (NEE) was measured for native alpine meadow with winter grazing (NAM), abandoned cropland/pasture (APL), perennial Elymus nutans (PEN), and annual oat pasture (AO) on the Tibetan plateau, during the growing seasons in 2009 and 2010 using a transparent chamber technique (Licor-6400). AO significantly decreased annual average NEE by 21.6, 23.7, and 15.7% compared to PEN, NAM, and APL during the growing season in 2010. Compared to PEN, NAM, and APL, AO significantly decreased average ecosystem respiration (R-e) by 21.1, 52.3, and 39.3%, respectively, during the growing season in 2009. Soil moisture and total aboveground and belowground biomass together explained 39.6% of NEE variation and 71% in gross primary productivity variation. Soil moisture and belowground biomass explained about 83.1% of the R-e variation. Our results indicated that it is possible to convert APL to PEN in the region because it could result in a higher NEE together with higher forage production compared to AO.; There is a great uncertainty about the effect of land use change on grassland ecosystem in the Tibetan Plateau. Net ecosystem carbon exchange (NEE) was measured for native alpine meadow with winter grazing (NAM), abandoned cropland/pasture (APL), perennial Elymus nutans (PEN), and annual oat pasture (AO) on the Tibetan plateau, during the growing seasons in 2009 and 2010 using a transparent chamber technique (Licor-6400). AO significantly decreased annual average NEE by 21.6, 23.7, and 15.7% compared to PEN, NAM, and APL during the growing season in 2010. Compared to PEN, NAM, and APL, AO significantly decreased average ecosystem respiration (R-e) by 21.1, 52.3, and 39.3%, respectively, during the growing season in 2009. Soil moisture and total aboveground and belowground biomass together explained 39.6% of NEE variation and 71% in gross primary productivity variation. Soil moisture and belowground biomass explained about 83.1% of the R-e variation. Our results indicated that it is possible to convert APL to PEN in the region because it could result in a higher NEE together with higher forage production compared to AO.
KeywordEcosystem Carbon Exchange Land Use Tibetan Plateau
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11099-015-0142-1
WOS KeywordSOIL CO2 EFFLUX ; ALPINE MEADOW ECOSYSTEM ; NORTHERN TEMPERATE GRASSLAND ; MOUNTAIN GRASSLANDS ; DIOXIDE EXCHANGE ; SEASONAL PATTERNS ; TROPICAL PASTURE ; ROOT RESPIRATION ; EDDY COVARIANCE ; FLUXES
Indexed BySCI
Language英语
Funding OrganizationNational Basic Research Programs(2013CB956000) ; Chinese Academy of Sciences(XDA05070205) ; Science and Technology Bureau of Qinghai(2012-Z-918Q) ; National Science and Technology Support Program(2012BAD13B01 ; 2014BAC05B04)
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000363248600006
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/5488
Collection中国科学院西北高原生物研究所
Affiliation1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100085, Peoples R China
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Luo, C. -Y.,Zhu, X. -X.,Wang, S. -P.,et al. Ecosystem carbon exchange under different land use on the Qinghai-Tibetan plateau[J]. PHOTOSYNTHETICA,2015,53(4):527-536.
APA Luo, C. -Y..,Zhu, X. -X..,Wang, S. -P..,Cui, S. -J..,Zhang, Z. -H..,...&Zhao, X. -Q..(2015).Ecosystem carbon exchange under different land use on the Qinghai-Tibetan plateau.PHOTOSYNTHETICA,53(4),527-536.
MLA Luo, C. -Y.,et al."Ecosystem carbon exchange under different land use on the Qinghai-Tibetan plateau".PHOTOSYNTHETICA 53.4(2015):527-536.
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