Sun Xiangyang1; Wang Genxu1; Huang Mei2; Hu Zhaoyong1; Song Chunlin1
Source Publicationjournalofmountainscience
AbstractAbies fabri is a typical subalpine dark coniferous forest in southwestern china. air temperature increases more at high elevation areas than that at low elevation areas in mountainous regions, and climate change ratio is also uneven in different seasons. carbon gain and the response of water use efficiency (wue) to annual and seasonal increases in temperature with or without co2 fertilization were simulated in abies fabri using the atmospheric-vegetation interaction model (avim(2)). four future climate scenarios (rcp2.6, rcp4.5, rcp6.o and rcp8.5) from the coupled model intercomparison project phase 5 (cmip5) were selectively investigated. the results showed that warmer temperatures have negative effects on gross primary production (gpp) and net primary production (npp) in growing seasons and positive effects in dormant seasons due to the variation in the leaf area index. warmer temperatures tend to generate lower canopy wue and higher ecosystem wue in abies fabri. however, warmer temperature together with rising co2 concentrations significantly increase the gpp and npp in both growing and dormant seasons and enhance wue in annual and dormant seasons because of the higher leaf area index (lai) and soil temperature. the comparison of the simulated results with and without co2 fertilization shows that co2 has the potential to partially alleviate the adverse effects of climate warming on carbon gain and wue in subalpine coniferous forests.
Document Type期刊论文
Recommended Citation
GB/T 7714
Sun Xiangyang,Wang Genxu,Huang Mei,et al. effectofclimatechangeonseasonalwateruseefficiencyinsubalpineabiesfabri[J]. journalofmountainscience,2017,14(1):142.
APA Sun Xiangyang,Wang Genxu,Huang Mei,Hu Zhaoyong,&Song Chunlin.(2017).effectofclimatechangeonseasonalwateruseefficiencyinsubalpineabiesfabri.journalofmountainscience,14(1),142.
MLA Sun Xiangyang,et al."effectofclimatechangeonseasonalwateruseefficiencyinsubalpineabiesfabri".journalofmountainscience 14.1(2017):142.
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