文献类型：期刊文献

英文题名：Water Body Utilization Pattern Influences Greenhouse Gas Emissions in Jiashan County, China

作者：Li, Niu[1] Wu, Jinlong[1,2] Li, Junzhen[1] Xiong, Jing[1] Yuan, Haijing[1] Jiao, Shengwu[1] Shao, Xuexin[1] Zhang, Youzheng[3] Zhang, Long[1] Wu, Ming[1]

第一作者：李妞

机构：[1] Wetland Ecosystem Research Station of Hangzhou Bay, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, Hangzhou, 311400, China; [2] College of Forestry and Biotechnology, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China; [3] Key Laboratory of Engineering Oceanography, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240154739)

语种：英文

外文关键词：Aquaculture - Biochemical oxygen demand - Dissolved oxygen - Gas emissions - Greenhouse gases - Industrial emissions - Lakes - Population statistics - Rivers - Urban growth - Water supply

摘要：Greenhouse gas (GHGs) emissions from inland waters constitute an important part of the global carbon (C) cycle. However, the effects of different water-use patterns on GHG emissions remain unclear, particularly in regions undergoing rapid urbanization and economic development. This study investigated the temporal and spatial changes in GHG (N2O, CH4, and CO2) concentrations and the causes of these changes in different water bodies, specifically undisturbed natural rivers, water supply reservoirs, ecotourism lakes and rivers, aquaculture ponds, agricultural land, and industrial land, in Jiashan County, China. We collected 96 samples across these water bodies for each season of the year. The results show that all the investigated water bodies were C sources. Substantial variability in the concentrations and fluxes of GHGs was observed within these water bodies, and this variability was strongly influenced by human activity. Specifically, approximately twofold higher GHG emissions were observed at aquaculture ponds and industrial sites than at other sites. However, sites with minimal human intervention, such as undisturbed natural rivers, water supply reservoirs, and ecotourism lakes, had comparatively low GHG emissions. The N2O concentrations were primarily regulated by temperature, NH4+, and pH, whereas the CH4 concentrations were strongly correlated with total nitrogen and dissolved oxygen concentrations. CO2 concentrations were closely related to salinity, relative humidity, and temperature. This study emphasizes the importance of gaining a better understanding of the effects of water body utilization on GHG emissions, particularly considering the potential changes in water utilization patterns and rapid population growth around urban rivers in the future. ? 2024, The Authors. All rights reserved.