预告|GeoInsider 第23期：大气干旱对全球陆地植被生长的影响

2020-06-04 04:49 作者:GeoInsider 0人读过 | 我要投稿

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GeoInsider Webinar

在线讲座系列第23期

题目：Increased atmospheric vapor pressure deficit reduces global vegetation growth, Science Advances paper

报告人：Dr. Wenping Yuan, Sun Yat-Sen University

　　　　袁文平教授，中山大学

时间：北京时间 6月5日（周五）上午10:00

　　　加州时间 6月4日（周四）晚上7:00

　　　悉尼时间 6月5日（周五）中午12:00

参与方式：B站“GeoInsider”直播间平台，直播间可现场留言提问，进入方式如下二选一：

(a)B站直播间链接：https://live.bilibili.com/22243531

(b)B站直播间二维码：

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论文链接：https://advances.sciencemag.org/content/5/8/eaax1396

GeoInsider简介

GeoInsider是一个最初由旧金山湾区的GeoScience同行自发形成的公益性交流平台，定位在顶级的产学研交叉，包括PNS级讲座、产业应用转化、留学Intern教职申请等交流，迄今已邀请发表过Science、Nature等高水平文章，以及来自Harvard、Berkeley等顶级机构的Webinar报告交流，是一个扩大学术影响力的平台。

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