預(yù)告|GeoInsider 第23期:大氣干旱對(duì)全球陸地植被生長(zhǎng)的影響
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■ 活動(dòng)簡(jiǎn)介 ■
GeoInsider Webinar
在線講座系列第23期
題目:Increased atmospheric vapor pressure deficit reduces global vegetation growth, Science Advances paper
報(bào)告人:Dr. Wenping Yuan, Sun Yat-Sen University
袁文平 教授,中山大學(xué)
時(shí)間:北京時(shí)間 6月5日(周五)上午10:00
加州時(shí)間 6月4日(周四)晚上7:00
悉尼時(shí)間 6月5日(周五)中午12:00
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Presentation Abstract
Atmospheric vapor pressure deficit (VPD) is a critical variable in determining plant photosynthesis. Synthesis of four global climate datasets reveals a sharp increase of VPD after the late 1990s. In response, the vegetation greening trend indicated by a satellite-derived vegetation index (GIMMS3g), which was evident before the late 1990s, was subsequently stalled or reversed. Terrestrial gross primary production derived from two satellite-based models (revised EC-LUE and MODIS) exhibits persistent and widespread decreases after the late 1990s due to increased?VPD, which offset the positive CO2 fertilization effect. Six Earth system models have consistently projected continuous increases of VPD throughout the current century. Our results highlight that the impacts of VPD on vegetation growth should be adequately considered to assess ecosystem responses to future climate conditions.
Linkage:
Science Advances論文鏈接:https://advances.sciencemag.org/content/5/8/eaax1396




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