Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14838 |
Biogeographic variation in temperature sensitivity of decomposition in forest soils | |
Li, Jinquan1,2; Nie, Ming1,2; Pendall, Elise3; Reich, Peter B.3,4; Pei, Junmin1,2; Noh, Nam Jin3; Zhu, Ting1,2; Li, Bo1,2; Fang, Changming1,2 | |
2019-10-21 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Peoples R China; Australia; USA |
英文摘要 | Determining soil carbon (C) responses to rising temperature is critical for projections of the feedbacks between terrestrial ecosystems, C cycle, and climate change. However, the direction and magnitude of this feedback remain highly uncertain due largely to our limited understanding of the spatial heterogeneity of soil C decomposition and its temperature sensitivity. Here we quantified C decomposition and its response to temperature change with an incubation study of soils from 203 sites across tropical to boreal forests in China spanning a wide range of latitudes (18 degrees 16 ' to 51 degrees 37 ' N) and longitudes (81 degrees 01 ' to 129 degrees 28 ' E). Mean annual temperature (MAT) and mean annual precipitation primarily explained the biogeographic variation in the decomposition rate and temperature sensitivity of soils: soil C decomposition rate decreased from warm and wet forests to cold and dry forests, while Q(10-MAT) (standardized to the MAT of each site) values displayed the opposite pattern. In contrast, biological factors (i.e. plant productivity and soil bacterial diversity) and soil factors (e.g. clay, pH, and C availability of microbial biomass C and dissolved organic C) played relatively small roles in the biogeographic patterns. Moreover, no significant relationship was found between Q(10-MAT) and soil C quality, challenging the current C quality-temperature hypothesis. Using a single, fixed Q(10-MAT) value (the mean across all forests), as is usually done in model predictions, would bias the estimated soil CO2 emissions at a temperature increase of 3.0 degrees C. This would lead to overestimation of emissions in warm biomes, underestimation in cold biomes, and likely significant overestimation of overall C release from soil to the atmosphere. Our results highlight that climate-related biogeographic variation in soil C responses to temperature needs to be included in next-generation C cycle models to improve predictions of C-climate feedbacks. |
英文关键词 | carbon cycle carbon cycle modelling carbon decomposition climate change forest Q(10) spatial heterogeneity temperature sensitivity |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000491805900001 |
WOS关键词 | ORGANIC-CARBON DECOMPOSITION ; MATTER DECOMPOSITION ; SPATIAL PREDICTION ; CLIMATE-CHANGE ; Q(10) VALUES ; RESPIRATION ; FEEDBACKS ; PROJECTIONS ; INCUBATION ; DEPENDENCE |
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/187740 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Fudan Univ, Minist Educ, Key Lab Biodivers Sci & Ecol Engn, Coastal Ecosyst Res Stn Yangtze River Estuary, Shanghai 200438, Peoples R China; 2.Fudan Univ, Shanghai Inst Ecochongming, Shanghai 200438, Peoples R China; 3.Western Sydney Univ, Hawkesbury Inst Environm, Penrith, NSW, Australia; 4.Univ Minnesota, Dept Forest Resources, St Paul, MN USA |
推荐引用方式 GB/T 7714 | Li, Jinquan,Nie, Ming,Pendall, Elise,et al. Biogeographic variation in temperature sensitivity of decomposition in forest soils[J]. GLOBAL CHANGE BIOLOGY,2019. |
APA | Li, Jinquan.,Nie, Ming.,Pendall, Elise.,Reich, Peter B..,Pei, Junmin.,...&Fang, Changming.(2019).Biogeographic variation in temperature sensitivity of decomposition in forest soils.GLOBAL CHANGE BIOLOGY. |
MLA | Li, Jinquan,et al."Biogeographic variation in temperature sensitivity of decomposition in forest soils".GLOBAL CHANGE BIOLOGY (2019). |
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