Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab6502 |
Exposure to cold temperature affects the spring phenology of Alaskan deciduous vegetation types | |
Shi, Mingjie1,2; Parazoo, Nicholas C.1; Jeong, Su-Jong3; Birch, Leah4; Lawrence, Peter5; Euskirchen, Eugenie S.6; Miller, Charles E.1 | |
2020-02-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2020 |
卷号 | 15期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; South Korea |
英文摘要 | Temperature is a dominant factor driving arctic and boreal ecosystem phenology, including leaf budburst and gross primary production (GPP) onset in Alaskan spring. Previous studies hypothesized that both accumulated growing degree day (GDD) and cold temperature (chilling) exposure are important to leaf budburst. We test this hypothesis by combining both satellite and aircraft vegetation measurements with the Community Land Model Version 4.5 (CLM), in which the end of plant dormancy depends on thermal conditions (i.e. GDD). We study the sensitivity of GPP onset of different Alaskan deciduous vegetation types to a GDD model with chilling requirement (GC model) included. The default CLM simulations have a 1-12 d earlier day of year GPP onset over Alaska vegetated regions compared to satellite constrained estimates from the Polar Vegetation Photosynthesis and Respiration Model. Integrating a GC model into CLM shifts the phase and amplitude of GPP. During 2007-2016, mean GPP onset is postponed by 5 +/- 7, 4 +/- 8, and 1 +/- 6 d over Alaskan northern tundra, shrub, and forest, respectively. The GC model has the greatest impact during warm springs, which is critical for predicting phenology response to future warming. Overall, spring GPP high bias is reduced by 10%. Thus, including chilling requirement in thermal forcing models improves northern high-latitude phenology, but leads to other impacts during the growing season which require further investigation. |
英文关键词 | Alaskan deciduous vegetation leaf budburst GPP onset community land model chilling requirement |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000522237300003 |
WOS关键词 | TERRESTRIAL CARBON-CYCLE ; PLANT GEOGRAPHY ; SEASONAL CYCLE ; CLIMATE ; MODEL ; CO2 ; RESPIRATION ; ECOSYSTEMS ; DYNAMICS ; WINTER |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/279156 |
专题 | 气候变化 |
作者单位 | 1.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA; 2.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90095 USA; 3.Seoul Natl Univ, Grad Sch Environm Studies, Environm Planning Dept, Seoul, South Korea; 4.Woods Hole Res Ctr, Falmouth, MA 02540 USA; 5.Natl Ctr Atmospher Res, Boulder, CO 80305 USA; 6.Univ Alaska Fairbanks, Inst Arctic Biol, Fairbanks, AK 99775 USA |
推荐引用方式 GB/T 7714 | Shi, Mingjie,Parazoo, Nicholas C.,Jeong, Su-Jong,et al. Exposure to cold temperature affects the spring phenology of Alaskan deciduous vegetation types[J]. ENVIRONMENTAL RESEARCH LETTERS,2020,15(2). |
APA | Shi, Mingjie.,Parazoo, Nicholas C..,Jeong, Su-Jong.,Birch, Leah.,Lawrence, Peter.,...&Miller, Charles E..(2020).Exposure to cold temperature affects the spring phenology of Alaskan deciduous vegetation types.ENVIRONMENTAL RESEARCH LETTERS,15(2). |
MLA | Shi, Mingjie,et al."Exposure to cold temperature affects the spring phenology of Alaskan deciduous vegetation types".ENVIRONMENTAL RESEARCH LETTERS 15.2(2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论