DOI: 10.1029/2018JG004443
Scopus记录号: 2-s2.0-85052441527
论文题名: Identifying Critical Climate Periods for Vegetation Growth in the Northern Hemisphere
作者: Chen C. ; He B. ; Guo L. ; Zhang Y. ; Xie X. ; Chen Z.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期: 8 起始页码: 2541
结束页码: 2552
语种: 英语
英文关键词: critical stage
; legacy effect
; NDVI
; seasonal climate change
; vegetation growth
英文摘要: Vegetation-climate relationships have been extensively investigated in previous studies, yet the critical seasons and corresponding climate factors influencing annual vegetation growth in a changing climate remain unclear. Relying on Global Inventory Modeling and Mapping Studies NDVI3g data and climate data from 1982 to 2013, this study explored the responses of vegetation growth to climate changes in the Northern Hemisphere (NH), with an emphasis on vegetation changes and legacy effects during different seasons. We further identified the most critical season in terms of vegetation growth. We found an apparent seasonal shift in the influence of climate change on vegetation growth in the NH. In addition, we observed legacy effects of climate change on vegetation growth throughout the seasons. Winter temperatures exerted a positive impact on vegetation growth during the following spring in Europe and central North America. Spring precipitation was an important factor for summer vegetation growth in dry areas. Using partial least squares regression, the relative importance of seasonal climatic factors on annual vegetation growth conditions were determined. This study finds that the vegetation in more than 40% of the NH is controlled by temperature, especially spring temperatures (12.8%). Precipitation and solar radiation were the dominant climate factors influencing vegetation growth in 29.9% and 29.1% of vegetated regions, respectively. Furthermore, compared with the period from 1983 to 1997, the influence of seasonal solar radiation on vegetation growth increased in the NH during the period from 1998 to 2013. This phenomenon was accompanied by reductions in the influence of spring and summer temperatures. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113344
Appears in Collections: 气候减缓与适应
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作者单位: College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Academy of Disaster Reduction and Emergency Management, School of Geography, Beijing Normal University, Beijing, China
Recommended Citation:
Chen C.,He B.,Guo L.,et al. Identifying Critical Climate Periods for Vegetation Growth in the Northern Hemisphere[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(8)