CH4 concentrations and fluxes in a subtropical metropolitan river network: Watershed urbanization impacts and environmental controls
文献类型：期刊论文
| 作者 | Wang, Xiaofeng1,4; He, Yixin3,8; Chen, Huai3,8; Yuan, Xingzhong1,2,4,5; Peng, Changhui6,7; Yue, Junsheng2,5; Zhang, Qiaoyong2,5; Zhou, Lilei2,5 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 622-623期号:2018页码:1079-1089 |
| 关键词 | Methane River network Land use Nutrients content Spatial and seasonal variation |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2017.12.054 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Urbanization and greenhouse gas emissions are of great global concern, especially in developing countries such as China. However, little is known about the relationship between the two. In this study, we examined the influences of the urbanization of Chongqing Municipality, which covers an area of 5494 km(2), in China, on the CH4 emissions of in its metropolitan river network. The results from 84 sampling locations showed an overall mean CH4 concentration of 0.69 +/- 1.37 mu mol.L-1 and a CH4 flux fromthe river network of 1.40 +/- 2.53mmol CH(4)m(-2)d(-1). The CH4 concentrations and fluxes presented a clear seasonal pattern, with the highest value in the spring and the lowest in the summer. Such seasonal variations were probably co-regulated by the dilution effect, temperature and supply of fresh organicmatter by algal blooms. Another important result was that the CH4 concentrations and fluxes increased with the degree of urbanization or the proportion of urban land use, being approximately 3-13 times higher in urban and suburban areas than in rural ones. The total nitrogen, dissolved oxygen (O%) and possible sewage discharge, which could affect the in situ CH4 production and exogenous CH4 input respectively, were important factors that influenced the spatial patterns of CH4 in human-dominated river networks, while the nitrogen (N) and phosphorus (P) could be good predictors of the CH4 emissions in urban watersheds. Hydrologic drivers, including bottom sediment type, flow velocity and river width, were strongly correlated with the CH4 concentrations and could also affect the spatial variance and predict the CH4 hotspots in such metropolitan river networks. With increasing urbanization, we should pay more attention to the increasing greenhouse gas emissions associated with urbanization. (c) 2017 Elsevier B. V. All rights reserved. |
| 学科主题 | Environment/ecology |
| URL标识 | 查看原文 |
| WOS关键词 | GORGES RESERVOIR REGION ; METHANE EMISSIONS ; CARBON-DIOXIDE ; NITROUS-OXIDE ; ORGANIC-CARBON ; SURFACE-WATER ; GAS-EXCHANGE ; XIANGXI BAY ; CO2 ; DYNAMICS |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000426349000108 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://210.75.237.14/handle/351003/30268]  |
| 专题 | 生物多样性与生态系统服务领域_生态研究 成都生物研究所_生态研究 生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室 生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室 食品安全与环境治理领域_环境微生物四川省重点实验室 生物多样性与生态系统服务领域 |
| 通讯作者 | Chen, Huai |
| 作者单位 | 1.Wetland Science Research Center of the Upper Reaches of the Yangtze River, Chongqing Normal University, Chongqing 400047, China; 2.State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400030, China; 3.Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation, Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; 4.College of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China; 5.College of Resources and Environmental Science, Chongqing University, Chongqing 400030, China; 6.Institut des Sciences de l'Environnement, Université du Québec à Montréal (UQAM), 201 Président-Kennedy, Montréal H2X 3Y7, Canada; 7.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China 8.Zoige Peatland and Global Change Research Station, Chinese Academy of Sciences, Hongyuan 624400, China; |
| 推荐引用方式 GB/T 7714 | Wang, Xiaofeng,He, Yixin,Chen, Huai,et al. CH4 concentrations and fluxes in a subtropical metropolitan river network: Watershed urbanization impacts and environmental controls[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,622-623(2018):1079-1089. |
| APA | Wang, Xiaofeng.,He, Yixin.,Chen, Huai.,Yuan, Xingzhong.,Peng, Changhui.,...&Zhou, Lilei.(2018).CH4 concentrations and fluxes in a subtropical metropolitan river network: Watershed urbanization impacts and environmental controls.SCIENCE OF THE TOTAL ENVIRONMENT,622-623(2018),1079-1089. |
| MLA | Wang, Xiaofeng,et al."CH4 concentrations and fluxes in a subtropical metropolitan river network: Watershed urbanization impacts and environmental controls".SCIENCE OF THE TOTAL ENVIRONMENT 622-623.2018(2018):1079-1089. |
入库方式： OAI收割
来源：成都生物研究所
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