Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14799 |
Methane emissions from contrasting urban freshwaters: Rates, drivers, and a whole-city footprint | |
Ortega, Sonia Herrero1,2; Gonzalez-Quijano, Clara Romero2,3; Casper, Peter1; Singer, Gabriel A.3; Gessner, Mark O.1,2 | |
2019-09-11 | |
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 | Germany |
英文摘要 | Global urbanization trends impose major alterations on surface waters. This includes impacts on ecosystem functioning that can involve feedbacks on climate through changes in rates of greenhouse gas emissions. The combination of high nutrient supply and shallow depth typical of urban freshwaters is particularly conducive to high rates of methane (CH4) production and emission, suggesting a potentially important role in the global CH4 cycle. However, there is a lack of comprehensive flux data from diverse urban water bodies, of information on the underlying drivers, and of estimates for whole cities. Based on measurements over four seasons in a total of 32 water bodies in the city of Berlin, Germany, we calculate the total CH4 emission from various types of surface waters of a large city in temperate climate at 2.6 +/- 1.7 Gg CH4/year. The average total emission was 219 +/- 490 mg CH4 m(-2) day(-1). Water chemical variables were surprisingly poor predictors of total CH4 emissions, and proxies of productivity and oxygen conditions had low explanatory power as well, suggesting a complex combination of factors governing CH4 fluxes from urban surface waters. However, small water bodies (area <1 ha) typically located in urban green spaces were identified as emission hotspots. These results help constrain assessments of CH4 emissions from freshwaters in the world's growing cities, facilitating extrapolation of urban emissions to large areas, including at the global scale. |
英文关键词 | CH4 flux greenhouse gas land use urban ecology urban ponds urbanization impact |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000485475200001 |
WOS关键词 | GREENHOUSE-GAS EMISSIONS ; CARBON-DIOXIDE ; RIVER NETWORK ; LAKE ; DYNAMICS ; ECOLOGY ; FLUX ; URBANIZATION ; ECOSYSTEMS ; BODIES |
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/186993 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Leibniz Inst Freshwater Ecol & Inland Fisheries I, Dept Expt Limnol, Stechlin, Germany; 2.TU Berlin, Dept Ecol, Berlin Inst Technol, Berlin, Germany; 3.Leibniz Inst Freshwater Ecol & Inland Fisheries I, Dept Ecohydrol, Berlin, Germany |
推荐引用方式 GB/T 7714 | Ortega, Sonia Herrero,Gonzalez-Quijano, Clara Romero,Casper, Peter,et al. Methane emissions from contrasting urban freshwaters: Rates, drivers, and a whole-city footprint[J]. GLOBAL CHANGE BIOLOGY,2019. |
APA | Ortega, Sonia Herrero,Gonzalez-Quijano, Clara Romero,Casper, Peter,Singer, Gabriel A.,&Gessner, Mark O..(2019).Methane emissions from contrasting urban freshwaters: Rates, drivers, and a whole-city footprint.GLOBAL CHANGE BIOLOGY. |
MLA | Ortega, Sonia Herrero,et al."Methane emissions from contrasting urban freshwaters: Rates, drivers, and a whole-city footprint".GLOBAL CHANGE BIOLOGY (2019). |
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