2008
DOI: 10.1111/j.1365-2486.2008.01582.x
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Effects of vegetation control on ecosystem water use efficiency within and among four grassland ecosystems in China

Abstract: Through 2-3-year (2003)(2004)(2005) continuous eddy covariance measurements of carbon dioxide and water vapor fluxes, we examined the seasonal, inter-annual, and interecosystem variations in the ecosystem-level water use efficiency (WUE, defined as the ratio of gross primary production, GPP, to evapotranspiration, ET) at four Chinese grassland ecosystems in the Qinghai-Tibet Plateau and North China. Representing the most prevalent grassland types in China, the four ecosystems are an alpine swamp meadow ecosyst… Show more

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Cited by 327 publications
(273 citation statements)
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References 37 publications
(59 reference statements)
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“…The significant seasonal changes of GPP and AGB (Table 1) were similar to those in previous studies and the average GPP and AGB values ( Figure 1) were close to previous observations in alpine meadows on the Tibetan Plateau (Hu et al 2008;Fu et al 2013b). …”
Section: Resultssupporting
confidence: 78%
“…The significant seasonal changes of GPP and AGB (Table 1) were similar to those in previous studies and the average GPP and AGB values ( Figure 1) were close to previous observations in alpine meadows on the Tibetan Plateau (Hu et al 2008;Fu et al 2013b). …”
Section: Resultssupporting
confidence: 78%
“…Annual mean air temperature and annual precipitation were found to be the dominant factors influencing the spatial variation of WUE among forests , but leaf area index (LAI) was found to determine the spatial variation of WUE among grasslands (Hu et al, 2008). Further analysis firstly illustrated the close relationship between WUE and altitude among different ecosystem types and found the spatial variation of WUE can be comprehensively reflected by elevation and LAI .…”
Section: The Spatio-temporal Variations Of Ecosystem Water Use Efficimentioning
confidence: 99%
“…In addition, based on network eddy covariance measurements, the spatial variations of WUE among forests , grasslands (Hu et al, 2008), and ecosystems having different ecosystem types were investigated, which were found to be differed among ecosystem types. Annual mean air temperature and annual precipitation were found to be the dominant factors influencing the spatial variation of WUE among forests , but leaf area index (LAI) was found to determine the spatial variation of WUE among grasslands (Hu et al, 2008).…”
Section: The Spatio-temporal Variations Of Ecosystem Water Use Efficimentioning
confidence: 99%
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“…169 The climate change-induced shifts in vegetation structure, and consequently in leaf functional traits, such as leaf 170 area index (LAI) and specific leaf area (SLA), likely affected both water and carbon cycles of grassland communities 171 (Hu et al 2008b). In this study, we scanned 20-30 fresh mature leaves for each species at our plots using a leaf area 172 meter (AM200; ADC Bio-Scientific Limited, Herts, UK).…”
Section: Leaf Functional Traitsmentioning
confidence: 99%