NWIPB OpenIR
Lagged climatic effects on carbon fluxes over three grassland ecosystems in China
Zhang, Tao1,2; Xu, Mingjie1,2; Xi, Yi1,2; Zhu, Juntao1; Tian, Li1; Zhang, Xianzhou1; Wang, Yanfen2; Li, Yingnian3; Shi, Peili1; Yu, Guirui1; Sun, Xiaomin1; Zhang, Yangjian1
2015-06-01
Source PublicationJOURNAL OF PLANT ECOLOGY
Volume8Issue:3Pages:291-302
SubtypeArticle
AbstractAims The plasticity of ecosystem responses could buffer and postpone the effects of climates on ecosystem carbon fluxes, but this lagged effect is often ignored. In this study, we used carbon flux data collected from three typical grassland ecosystems in China, including a temperate semiarid steppe in Inner Mongolia (Neimeng site, NM), an alpine shrub-meadow in Qinghai (Haibei site, HB) and an alpine meadow steppe in Tibet (Dangxiong site, DX), to examine the time lagged effects of environmental factors on CO2 exchange. Methods Eddy covariance data were collected from three typical Chinese grasslands. In linking carbon fluxes with climatic factors, we used their averages or cumulative values within each 12-month period and we called them 'yearly' statistics in this study. To investigate the lagged effects of the climatic factors on the carbon fluxes, the climatic 'yearly' statistics were kept still and the 'yearly' statistics of the carbon fluxes were shifted backward 1 month at a time. Important Findings Soil moisture and precipitation was the main factor driving the annual variations of carbon fluxes at the alpine HB and DX, respectively, while the NM site was under a synthetic impact of each climatic factor. The time lagged effect analysis showed that temperature had several months, even half a year lag effects on CO2 exchange at the three studied sites, while moisture's effects were mostly exhibited as an immediate manner, except at NM. In general, the lagged climatic effects were relatively weak for the alpine ecosystem. Our results implied that it might be months or even 1 year before the variations of ecosystem carbon fluxes are adjusted to the current climate, so such lag effects could be resistant to more frequent climate extremes and should be a critical component to be considered in evaluating ecosystem stability. An improved knowledge on the lag effects could advance our understanding on the driving mechanisms of climate change effects on ecosystem carbon fluxes.; Aims
KeywordClimate Change Carbon Flux Direct Effect Grasslands Lagged Effect
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS KeywordLEYMUS-CHINENSIS STEPPE ; QINGHAI-TIBETAN PLATEAU ; CO2 EXCHANGE ; INTERANNUAL VARIABILITY ; DIOXIDE EXCHANGE ; LONG-TERM ; TERRESTRIAL ECOSYSTEMS ; TEMPERATE GRASSLAND ; INNER-MONGOLIA ; ALPINE MEADOW
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences ; Environmental Sciences & Ecology
WOS SubjectPlant Sciences ; Ecology
WOS IDWOS:000359662100006
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/5544
Collection中国科学院西北高原生物研究所
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810001, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Tao,Xu, Mingjie,Xi, Yi,et al. Lagged climatic effects on carbon fluxes over three grassland ecosystems in China[J]. JOURNAL OF PLANT ECOLOGY,2015,8(3):291-302.
APA Zhang, Tao.,Xu, Mingjie.,Xi, Yi.,Zhu, Juntao.,Tian, Li.,...&Zhang, Yangjian.(2015).Lagged climatic effects on carbon fluxes over three grassland ecosystems in China.JOURNAL OF PLANT ECOLOGY,8(3),291-302.
MLA Zhang, Tao,et al."Lagged climatic effects on carbon fluxes over three grassland ecosystems in China".JOURNAL OF PLANT ECOLOGY 8.3(2015):291-302.
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