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首页> 外文期刊>Nordic hydrology >Nitrous oxide emission from the littoral zones of the Miyun Reservoir near Beijing, China
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Nitrous oxide emission from the littoral zones of the Miyun Reservoir near Beijing, China

机译：北京附近密云水库沿岸带的一氧化二氮排放

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摘要

Large dams may be substantial contributors to greenhouse gas emissions. Nitrous oxide (N_2O) is the third most important greenhouse gas but studies on N_2O emission from reservoirs are limited. We measured N_2O emissions and environmental factors including atmospheric pressure, wind speed, air and soil/sediment temperature, biomass, soil water content and organic matter, total nitrogen, NH_4~+-N and NO_3~--N of soil, from the littoral zones of the Miyun Reservoir, near Beijing, China, in January, May, June, August, and October during 2009 and 2010. Using the static chamber method we investigated the seasonal and spatial variation, relating it to environmental factors. Spatial and temporal variations in N_2O flux appeared to be influenced by several environmental factors, working singly or in conjunction, including soil water depth, soil nutrition, biomass, and wind speed. In winter and spring, high N_2O emissions (up to 1.9 ± 0.6 mg N_2O m~(-2) h~(-1)) were recorded at both eulittoral and infralittoral zones, while the flux from the supralittoral zone was low during all the seasons (from -0.04 to 0.01 mg N_2O m~(-2) h~(-1)). This study suggests that the littoral zone is a substantial source of N_2O. However, its spatiotemporal variation and environmental drivers are still not clear.
机译：大型水坝可能是造成温室气体排放的主要因素。一氧化二氮（N_2O）是第三重要的温室气体，但有关储层N_2O排放的研究有限。我们从沿海地区测量了N_2O排放和环境因素，包括大气压力，风速，空气和土壤/沉积温度，生物量，土壤含水量和有机质，总氮，NH_4〜+ -N和NO_3〜--N。 2009年至2010年1月，5月，6月，8月和10月，中国北京附近的密云水库带。使用静室法研究了季节和空间变化，并将其与环境因素相关联。 N_2O通量的时空变化似乎受到几个环境因素的影响，这些因素单独或共同作用，包括土壤水深，土壤营养，生物量和风速。在冬季和春季，在沿岸和沿棚下区均记录到高的N_2O排放（高达1.9±0.6 mg N_2O m〜（-2）h〜（-1）），而在整个春季期间，沿ral上区的通量较低。季节（从-0.04到0.01 mg N_2O m〜（-2）h〜（-1））。这项研究表明，沿岸带是N_2O的重要来源。但是，其时空变化和环境驱动因素仍不清楚。

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  • 来源
    《Nordic hydrology》 |2015年第5期|811-823|共13页
  • 作者

    Hongli Li; Meng Yang; Ting Lei; Mingxiang Zhang; Peter Bridgewater; Cai Lu; Xuemeng Geng; GuangChun Lei;

  • 作者单位

    School of Nature Conservation, Beijing Forestry University, Qinghuadonglu No. 35, Haidian District, Beijing, 100083, China;

    School of Nature Conservation, Beijing Forestry University, Qinghuadonglu No. 35, Haidian District, Beijing, 100083, China;

    School of Nature Conservation, Beijing Forestry University, Qinghuadonglu No. 35, Haidian District, Beijing, 100083, China;

    School of Nature Conservation, Beijing Forestry University, Qinghuadonglu No. 35, Haidian District, Beijing, 100083, China;

    School of Nature Conservation, Beijing Forestry University, Qinghuadonglu No. 35, Haidian District, Beijing, 100083, China;

    School of Nature Conservation, Beijing Forestry University, Qinghuadonglu No. 35, Haidian District, Beijing, 100083, China;

    School of Nature Conservation, Beijing Forestry University, Qinghuadonglu No. 35, Haidian District, Beijing, 100083, China;

    School of Nature Conservation, Beijing Forestry University, Qinghuadonglu No. 35, Haidian District, Beijing, 100083, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biomass; littoral zone; N_2O flux; soil nutrients; soil water content; wind;

    机译：生物质沿海地带;N_2O通量;土壤养分;土壤含水量;风;

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