Exposures to temperature beyond threshold disproportionately reduce vegetation growth in the northern hemisphere

• 作者: Changhui Peng Cicheng Zhang Craig D. Allen Deliang Chen Hongyan Liu Pei Wang Tingting Pei Weichao Guo Wenquan Zhu Xiaoyan Li Xiuchen Wu Yang Wang Yuhong Tian Yujun Ma Zhaoliang Song Zongshan Li
• 来源期刊: 国家科学评论（英文版）
• 年，卷（期）: 2019,（4）
• 页码范围: 786-795
• 页数: 10页
• 语种: 英文
• DOI: 10.1093/nsr/nwy158

摘要

In recent decades, terrestrial vegetation in the northern hemisphere (NH) has been exposed to warming and more extremely high temperatures. However, the consequences of these changes for terrestrial vegetation growth remain poorly quantified and understood. By examining a satellite-based vegetation index, tree-ring measurements and land-surface model simulations, we discovered a consistent convex pattern in the responses of vegetation growth to temperature exposure (TE) for forest, shrub and grass in both the temperate (30?? 50?N) and boreal (50?? 70?N) NH during the period of 1982? 2012. The response of vegetation growth to TE for the three vegetation types in both the temperate and boreal NH increased convergently with increasing temperature, until vegetation type-dependent temperature thresholds were reached. A TE beyond these temperature thresholds resulted in disproportionately weak positive or even strong negative responses. Vegetation growth in the boreal NH was more vulnerable to extremely high-temperature events than vegetation growth in the temporal NH. The non-linear responses discovered here provide new insights into the dynamics of northern terrestrial ecosystems in a warmer world.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Deliang Chen	中国科学院生态环境研究中心	4	0	0.0	0.0
2	Pei Wang	中国科学院生态环境研究中心	2	0	0.0	0.0
3	Xiuchen Wu	中国科学院生态环境研究中心	1	0	0.0	0.0
4	Weichao Guo	中国科学院生态环境研究中心	1	0	0.0	0.0
5	Hongyan Liu	中国科学院生态环境研究中心	1	0	0.0	0.0
6	Xiaoyan Li	中国科学院生态环境研究中心	1	0	0.0	0.0
7	Changhui Peng	中国科学院生态环境研究中心	1	0	0.0	0.0
8	Craig D. Allen	中国科学院生态环境研究中心	1	0	0.0	0.0
9	Cicheng Zhang	中国科学院生态环境研究中心	1	0	0.0	0.0
10	Tingting Pei	中国科学院生态环境研究中心	1	0	0.0	0.0
11	Yujun Ma	中国科学院生态环境研究中心	1	0	0.0	0.0
12	Yuhong Tian	中国科学院生态环境研究中心	1	0	0.0	0.0
13	Zhaoliang Song	中国科学院生态环境研究中心	1	0	0.0	0.0
14	Wenquan Zhu	中国科学院生态环境研究中心	1	0	0.0	0.0
15	Yang Wang	中国科学院生态环境研究中心	1	0	0.0	0.0
16	Zongshan Li	中国科学院生态环境研究中心	1	0	0.0	0.0