首页|High leaf area index expands the contrasting effect of climate warming on Western Siberia taiga forests activity before and after 2000

High leaf area index expands the contrasting effect of climate warming on Western Siberia taiga forests activity before and after 2000

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The taiga vegetation in Western Siberia has been seriously threatened by climate warming in recent decades.However,how vegetation in different growing states and climate conditions responds to climate changes differently is still unclear.Here we explore the vege-tation activity trends in Western Siberia taiga forests using the annual rate of change in leaf area index(LAI)during 1982-2018 so as to answer two questions:(1)how did climate warming affect taiga vegetation activity in the recent last decades?(2)Did the growing state of taiga forest affect its response to climate warming?Our results revealed that climate warming promoted taiga vegetation activity in Western Siberia before 2000.However,con-tinuous warming caused excessive evapotranspiration and led to decreased vegetation ac-tivity after 2000.Moreover,the intensity of vegetation growth response to warming was posi-tively related to canopy height and LAI,indicating that both the positive and negative effects of warming were more significant in taiga forests in better growing state.Since these forests generally have higher productivity and play more important roles in ecosystem functioning(e.g.,carbon sink and biodiversity conservation),our results highlight their vulnerability to future climate change that need more research attention.

climate warmingtaiga forestleaf area index(LAI)vegetation activityWestern Siberia

SUN Han、WANG Xiangping

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State Key Laboratory of Efficient Production of Forest Resources,Beijing Forestry University,Beijing 100083,China

School of Ecology and Nature Conservation,Beijing Forestry University,Beijing 100083,China

Third Xinjiang Scientific Expedition ProgramThird Xinjiang Scientific Expedition ProgramNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

2021xjkk06032022xjkk12053220125832271652

2024

10.1007/s11442-024-2198-y

地理学报(英文版)
中国地理学会,中国科学院地理科学与资源研究所

地理学报(英文版)

CSTPCD
影响因子：1.307
ISSN：1009-637X
年,卷(期)：2024.34(1)