Document Type
Article
Publication Date
2019
Publication Title
Climate
Abstract
We qualitatively and quantitatively assessed the factors related to vegetation growth using Earth system models and corroborated the results with historical climate observations. The Earth system models showed a systematic greening by the late 21st century, including increases of up to 100% in Gross Primary Production (GPP) and 60% in Leaf Area Index (LAI). A subset of models revealed that the radiative effects of CO2 largely control changes in climate, but that the CO2 fertilization effect dominates the greening. The ensemble of Earth system model experiments revealed that the feedback of surface temperature contributed to 17% of GPP increase in temperature-limited regions, and radiation increase accounted for a 7% increase of GPP in radiation-limited areas. These effects are corroborated by historical observations. For example, observations confirm that cloud cover has decreased over most land areas in the last three decades, consistent with a CO2-induced reduction in transpiration. Our results suggest that vegetation may thrive in the starkly different climate expected over the coming decades, but only if plants harvest the sort of hypothesized physiological benefits of higher CO2 depicted by current Earth system models.
Recommended Citation
Hashimoto, Hirofumi; Nemani, Ramakrishna R.; Bala, Govindasamy; Cao, Long; Michaelis, Andrew R.; Ganguly, Sangram; Wang, Weile; Milesi, Cristina; Eastman, Ryan; Lee, Tsengdar; and Myneni, Ranga, "Constraints to Vegetation Growth Reduced by Region-Specific Changes in Seasonal Climate" (2019). School of Natural Sciences Faculty Publications and Presentations. 78.
https://digitalcommons.csumb.edu/sns_fac/78
Comments
Published in Climate by MDPI. Available via doi: 10.3390/cli7020027.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).