NWIPB OpenIR
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
发表期刊PHOTOSYNTHETICA
卷号53期号:4页码:527-536
文章类型Article
摘要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.; 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.
关键词Ecosystem Carbon Exchange Land Use Tibetan Plateau
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11099-015-0142-1
关键词[WOS]SOIL CO2 EFFLUX ; ALPINE MEADOW ECOSYSTEM ; NORTHERN TEMPERATE GRASSLAND ; MOUNTAIN GRASSLANDS ; DIOXIDE EXCHANGE ; SEASONAL PATTERNS ; TROPICAL PASTURE ; ROOT RESPIRATION ; EDDY COVARIANCE ; FLUXES
收录类别SCI
语种英语
项目资助者National 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研究方向Plant Sciences
WOS类目Plant Sciences
WOS记录号WOS:000363248600006
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/5488
专题中国科学院西北高原生物研究所
作者单位1.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
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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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