Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13930 |
Disentangling the mechanisms behind winter snow impact on vegetation activity in northern ecosystems | |
Wang, Xiaoyi1; Wang, Tao1,2; Guo, Hui1; Liu, Dan1; Zhao, Yutong1; Zhang, Taotao1; Liu, Qiang3; Piao, Shilong1,2,3 | |
2018-04-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:4页码:1651-1662 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Although seasonal snow is recognized as an important component in the global climate system, the ability of snow to affect plant production remains an important unknown for assessing climate change impacts on vegetation dynamics at high-latitude ecosystems. Here, we compile data on satellite observation of vegetation greenness and spring onset date, satellite-based soil moisture, passive microwave snow water equivalent (SWE) and climate data to show that winter SWE can significantly influence vegetation greenness during the early growing season (the period between spring onset date and peak photosynthesis timing) over nearly one-fifth of the land surface in the region north of 30 degrees, but the magnitude and sign of correlation exhibits large spatial heterogeneity. We then apply an assembled path model to disentangle the two main processes (via changing early growing-season soil moisture, and via changing the growth period) in controlling the impact of winter SWE on vegetation greenness, and suggest that the moisture and growth period effect, to a larger extent, result in positive and negative snow-productivity associations, respectively. The magnitude and sign of snow-productivity association is then dependent upon the relative dominance of these two processes, with the moisture effect and positive association predominating in Central, western North America and Greater Himalaya, and the growth period effect and negative association in Central Europe. We also indicate that current state-of-the-art models in general reproduce satellite-based snow-productivity relationship in the region north of 30 degrees, and do a relatively better job of capturing the moisture effect than the growth period effect. Our results therefore work towards an improved understanding of winter snow impact on vegetation greenness in northern ecosystems, and provide a mechanistic basis for more realistic terrestrial carbon cycle models that consider the impacts of winter snow processes. |
英文关键词 | northern ecosystems path model snow water equivalent snowmelt date soil moisture vegetation greenness |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426504400018 |
WOS关键词 | ALASKAN ARCTIC TUNDRA ; CLIMATE-CHANGE ; GROWING-SEASON ; CARBON-CYCLE ; NITROGEN MINERALIZATION ; WATER EQUIVALENT ; RADIOMETER DATA ; SOIL-MOISTURE ; RESPONSES ; DEPTH |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/17444 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing, Peoples R China; 2.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; 3.Peking Univ, Sino French Inst Earth Syst Sci, Coll Urban & Environm Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Xiaoyi,Wang, Tao,Guo, Hui,et al. Disentangling the mechanisms behind winter snow impact on vegetation activity in northern ecosystems[J]. GLOBAL CHANGE BIOLOGY,2018,24(4):1651-1662. |
APA | Wang, Xiaoyi.,Wang, Tao.,Guo, Hui.,Liu, Dan.,Zhao, Yutong.,...&Piao, Shilong.(2018).Disentangling the mechanisms behind winter snow impact on vegetation activity in northern ecosystems.GLOBAL CHANGE BIOLOGY,24(4),1651-1662. |
MLA | Wang, Xiaoyi,et al."Disentangling the mechanisms behind winter snow impact on vegetation activity in northern ecosystems".GLOBAL CHANGE BIOLOGY 24.4(2018):1651-1662. |
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