• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Atmospheric environment >Characteristics of GHG flux from water-air interface along a reclaimed water intake area of the Chaobai River in Shunyi, Beijing
【24h】

Characteristics of GHG flux from water-air interface along a reclaimed water intake area of the Chaobai River in Shunyi, Beijing

机译：北京顺义潮白河再生水取水区水-空气界面温室气体通量特征

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To understand greenhouse gas (GHG) flux in reclaimed water intake area impact on urban climate, 'static chamber' method was used to investigate the spatio-diurnal variations and the influence factors of GHG fluxes at water-air interface from Jian River to Chaobai River. Results showed that the average fluxes of CO2 from the Jian River and the Chaobai River were 73.46 mg(m(2).h)(-1) and -64.75 mg(m(2).h)(-1), respectively. CO2 was emitted the most in the Jian River, but it was absorbed from the atmosphere in the Chaobai River. Unary linear regression analyses demonstrated that Chlorophyll a (Chl a) and pH variation controlled the carbon source and sink from the Jian River to the Chaobai River. The diurnal variation of CO2 fluxes was higher at night than in the daytime in the Jian River, and it was the inverse in the Chaobai River, which highly correlated with dissociative CO2 and HCO3- transformation to CO32-. The average fluxes of CH4 from the Jian River and Chaobai River were 0.973 mg(m(2).h)(-1) and 5.556 mg(m(2).h)(-1), respectively, which increased along the water flow direction. Unary and multiple linear regression analyses demonstrated that Chl a and total organic carbon (TOC) controlled the increase of CH4 along the flow direction. The diurnal variation of CH4 fluxes was slightly higher in the daytime than at night due to the effect of water temperature.
机译：为了了解再生水取水区的温室气体（GHG）通量对城市气候的影响，采用“静室”方法研究了剑江至潮白河水-气界面处温室气体通量的时空变化及其影响因素。 。结果表明，剑江和潮白河的平均CO2通量分别为73.46 mg（m（2）.h）（-1）和-64.75 mg（m（2）.h）（-1）。剑江排放的二氧化碳最多，但潮白河的大气吸收了二氧化碳。一元线性回归分析表明，叶绿素a（Chl a）和pH的变化控制了剑江至潮白河的碳源和碳汇。剑江夜间CO2通量的日变化高于白天，而潮白河则与白天相反，这与CO2和HCO3-向CO32-的分解密切相关。剑江和潮白河CH4的平均通量分别为0.973 mg（m（2）.h）（-1）和5.556 mg（m（2）.h）（-1），随水流增加流动的方向。一元和多元线性回归分析表明，Chla和总有机碳（TOC）控制了CH4沿流动方向的增加。由于水温的影响，白天的CH4通量的日变化略高于夜间。

著录项

  • 来源
    《Atmospheric environment》 |2018年第1期|102-108|共7页
  • 作者

    He Baonan; He Jiangtao; Wang Jian; Li Jie; Wang Fei;

  • 作者单位

    China Univ Geosci, Sch Water Resources & Environm, Key Lab Water Resources & Environm Engn, Beijing 100083, Peoples R China;

    China Univ Geosci, Sch Water Resources & Environm, Key Lab Water Resources & Environm Engn, Beijing 100083, Peoples R China;

    East China Inst Technol, Nanchang 330013, Jiangxi, Peoples R China;

    China Univ Geosci, Sch Water Resources & Environm, Key Lab Water Resources & Environm Engn, Beijing 100083, Peoples R China;

    China Univ Geosci, Sch Water Resources & Environm, Key Lab Water Resources & Environm Engn, Beijing 100083, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CO2 flux; CH4 flux; Reclaimed water; Spatio-diurnal variation; Chaobai River;

    机译：二氧化碳通量CH4通量再生水时空变化潮白河;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号