Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aa7398 |
Contrasting and interacting changes in simulated spring and summer carbon cycle extremes in European ecosystems | |
Sippel, Sebastian1; Forkel, Matthias2; Rammig, Anja3; Thonicke, Kirsten4; Flach, Milan1; Heimann, Martin1; Otto, Friederike E. L.5; Reichstein, Markus1; Mahecha, Miguel D.1 | |
2017-07-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2017 |
卷号 | 12期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Austria; England |
英文摘要 | Climate extremes have the potential to cause extreme responses of terrestrial ecosystem functioning. However, it is neither straightforward to quantify and predict extreme ecosystem responses, nor to attribute these responses to specific climate drivers. Here, we construct a factorial experiment based on a large ensemble of process-oriented ecosystem model simulations driven by a regional climate model (12 500 model years in 1985-2010) in six European regions. Our aims are to (1) attribute changes in the intensity and frequency of simulated ecosystem productivity extremes (EPEs) to recent changes in climate extremes, CO2 concentration, and land use, and to (2) assess the effect of timing and seasonal interaction on the intensity of EPEs. Evaluating the ensemble simulations reveals that (1) recent trends in EPEs are seasonally contrasting: spring EPEs show consistent trends towards increased carbon uptake, while trends in summer EPEs are predominantly negative in net ecosystem productivity (i. e. higher net carbon release under drought and heat in summer) and close-to-neutral in gross productivity. While changes in climate and its extremes (mainly warming) and changes in CO2 increase spring productivity, changes in climate extremes decrease summer productivity neutralizing positive effects of CO2. Furthermore, we find that (2) drought or heat wave induced carbon losses in summer (i. e. negative EPEs) can be partly compensated by a higher uptake in the preceding spring in temperate regions. Conversely, however, carry-over effects from spring to summer that arise from depleted soil moisture exacerbate the carbon losses caused by climate extremes in summer, and are thus undoing spring compensatory effects. While the spring-compensation effect is increasing over time, the carry-over effect shows no trend between 1985-2010. The ensemble ecosystem model simulations provide a process-based interpretation and generalization for spring-summer interacting carbon cycle effects caused by climate extremes (i. e. compensatory and carry-over effects). In summary, the ensemble ecosystem modelling approach presented in this paper offers a novel route to scrutinize ecosystem responses to changing climate extremes in a probabilistic framework, and to pinpoint the underlying eco-physiological mechanisms. |
英文关键词 | climate extremes carbon cycle extremes vegetation modelling biogeosciences climate change ensemble modelling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404943800006 |
WOS关键词 | GLOBAL VEGETATION MODEL ; CLIMATE EXTREMES ; LEAF-AREA ; DROUGHT ; EVENTS ; PRODUCTIVITY ; PHENOLOGY ; RESPONSES ; IMPACTS ; FOREST |
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/36515 |
专题 | 气候变化 |
作者单位 | 1.Max Planck Inst Biogeochem, Hans Knoll Str 10, D-07745 Jena, Germany; 2.Tech Univ Wien, Dept Geodesy & Geoinformat, Gusshausstr 2729, A-1040 Vienna, Austria; 3.Tech Univ Munich, TUM Sch Life Sci Weihenstephan, D-85354 Freising Weihenstephan, Germany; 4.Potsdam Inst Climate Impact Res, D-14473 Potsdam, Germany; 5.Univ Oxford, Environm Change Inst, South Parks Rd, Oxford OX1 3QY, England |
推荐引用方式 GB/T 7714 | Sippel, Sebastian,Forkel, Matthias,Rammig, Anja,et al. Contrasting and interacting changes in simulated spring and summer carbon cycle extremes in European ecosystems[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(7). |
APA | Sippel, Sebastian.,Forkel, Matthias.,Rammig, Anja.,Thonicke, Kirsten.,Flach, Milan.,...&Mahecha, Miguel D..(2017).Contrasting and interacting changes in simulated spring and summer carbon cycle extremes in European ecosystems.ENVIRONMENTAL RESEARCH LETTERS,12(7). |
MLA | Sippel, Sebastian,et al."Contrasting and interacting changes in simulated spring and summer carbon cycle extremes in European ecosystems".ENVIRONMENTAL RESEARCH LETTERS 12.7(2017). |
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