Dryness limits vegetation pace to cope with temperature change in warm regions

Bingxue Wang, Weinan Chen, Dashuan Tian, Zhaolei Li, Jinsong Wang, Zheng Fu, Yiqi Luo, Shilong Piao, Guirui Yu, Shuli Niu

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Climate change leads to increasing temperature and more extreme hot and drought events. Ecosystem capability to cope with climate warming depends on vegetation's adjusting pace with temperature change. How environmental stresses impair such a vegetation pace has not been carefully investigated. Here we show that dryness substantially dampens vegetation pace in warm regions to adjust the optimal temperature of gross primary production (GPP) ((Figure presented.)) in response to change in temperature over space and time. (Figure presented.) spatially converges to an increase of 1.01°C (95% CI: 0.97, 1.05) per 1°C increase in the yearly maximum temperature (Tmax) across humid or cold sites worldwide (37oS–79oN) but only 0.59°C (95% CI: 0.46, 0.74) per 1°C increase in Tmax across dry and warm sites. (Figure presented.) temporally changes by 0.81°C (95% CI: 0.75, 0.87) per 1°C interannual variation in Tmax at humid or cold sites and 0.42°C (95% CI: 0.17, 0.66) at dry and warm sites. Regardless of the water limitation, the maximum GPP (GPPmax) similarly increases by 0.23 g C m−2 day−1 per 1°C increase in (Figure presented.) in either humid or dry areas. Our results indicate that the future climate warming likely stimulates vegetation productivity more substantially in humid than water-limited regions.

Original languageEnglish (US)
Pages (from-to)4750-4757
Number of pages8
JournalGlobal change biology
Volume29
Issue number17
DOIs
StatePublished - Sep 2023
Externally publishedYes

Keywords

  • GPP
  • adaptation magnitude
  • carbon cycle
  • climate change
  • optimum temperature
  • temperature adaptation
  • thermal optimality
  • water limitation

ASJC Scopus subject areas

  • Global and Planetary Change
  • Environmental Chemistry
  • Ecology
  • General Environmental Science

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