Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15505 |
Winter snow and spring temperature have differential effects on vegetation phenology and productivity across Arctic plant communities | |
Katharine C. Kelsey; Stine Hø; jlund Pedersen; A. Joshua Leffler; Joseph O. Sexton; Min Feng; Jeffrey M. Welker | |
2021-01-23 | |
发表期刊 | Global Change Biology |
出版年 | 2021 |
英文摘要 | Tundra dominates two‐thirds of the unglaciated, terrestrial Arctic. Although this region has experienced rapid and widespread changes in vegetation phenology and productivity over the last several decades, the specific climatic drivers responsible for this change remain poorly understood. Here we quantified the effect of winter snowpack and early spring temperature conditions on growing season vegetation phenology (timing of the start, peak, and end of the growing season) and productivity of the dominant tundra vegetation communities of Arctic Alaska. We used daily remotely sensed normalized difference vegetation index (NDVI), and daily snowpack and temperature variables produced by SnowModel and MicroMet, coupled physically based snow and meteorological modeling tools, to (1) determine the most important snowpack and thermal controls on tundra vegetation phenology and productivity and (2) describe the direction of these relationships within each vegetation community. Our results show that soil temperature under the snowpack, snowmelt timing, and air temperature following snowmelt are the most important drivers of growing season timing and productivity among Arctic vegetation communities. Air temperature after snowmelt was the most important control on timing of season start and end, with warmer conditions contributing to earlier phenology in all vegetation communities. In contrast, the controls on the timing of peak season and productivity also included snowmelt timing and soil temperature under the snowpack, dictated in part by the snow insulating capacity. The results of this novel analysis suggest that while future warming effects on phenology may be consistent across communities of the tundra biome, warming may result in divergent, community‐specific productivity responses if coupled with reduced snow insulating capacity lowers winter soil temperature and potential nutrient cycling in the soil. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/313732 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Katharine C. Kelsey,Stine Hø,jlund Pedersen,et al. Winter snow and spring temperature have differential effects on vegetation phenology and productivity across Arctic plant communities[J]. Global Change Biology,2021. |
APA | Katharine C. Kelsey.,Stine Hø.,jlund Pedersen.,A. Joshua Leffler.,Joseph O. Sexton.,...&Jeffrey M. Welker.(2021).Winter snow and spring temperature have differential effects on vegetation phenology and productivity across Arctic plant communities.Global Change Biology. |
MLA | Katharine C. Kelsey,et al."Winter snow and spring temperature have differential effects on vegetation phenology and productivity across Arctic plant communities".Global Change Biology (2021). |
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