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南京轿子山生活垃圾填埋场温室气体释放的变化规律

冯 凯 黄天寅

冯 凯, 黄天寅. 南京轿子山生活垃圾填埋场温室气体释放的变化规律[J]. 环境科学研究, 2014, 27(12): 1432-1439.
引用本文: 冯 凯, 黄天寅. 南京轿子山生活垃圾填埋场温室气体释放的变化规律[J]. 环境科学研究, 2014, 27(12): 1432-1439.
FENG Kai, HUANG Tian-yin. Study on the Variation Regularity of Greenhouse Gas Release from Jiaozishan Mountain Municipal Solid Waste Landfill[J]. Research of Environmental Sciences, 2014, 27(12): 1432-1439.
Citation: FENG Kai, HUANG Tian-yin. Study on the Variation Regularity of Greenhouse Gas Release from Jiaozishan Mountain Municipal Solid Waste Landfill[J]. Research of Environmental Sciences, 2014, 27(12): 1432-1439.

南京轿子山生活垃圾填埋场温室气体释放的变化规律

基金项目: 国家自然科学基金项目(41005090)

Study on the Variation Regularity of Greenhouse Gas Release from Jiaozishan Mountain Municipal Solid Waste Landfill

  • 摘要: 垃圾填埋场是全球温室气体释放的重要来源. 在南京轿子山生活垃圾填埋场3个具有不同填埋龄(4~13 a)、覆土深度(30~100 cm)和有无填埋气收集系统的平台,采用静态箱气相色谱法对填埋场CH4和N2O的释放规律进行了研究. 结果表明:填埋龄与覆土深度对填埋场CH4和N2O的释放影响显著,与其他2个平台相比,填埋龄(10~15 a)长、覆土深度(80~100 cm)大且无填埋气收集系统的平台1的CH4和N2O四季及昼夜释放通量均相对较小,相差为2个数量级;虽然3个平台温室气体释放通量的昼夜和季节性变化规律并不一致,但在春季均出现最小值,CH4和N2O的最小释放通量分别约为30和186.49 μg/(m2·h). 夏季、秋冬季交替及冬春季交替时期,CH4和N2O的释放通量均出现峰值,晚上的释放量约占全天释放总量的70%左右. 垃圾填埋场是高度异质性体系,相关性分析表明,CH4释放通量与覆土温度、覆土含水率无显著相关性,而N2O释放通量却与这2个指标呈显著相关. CH4释放通量季节和昼夜性变化较稳定,变异系数范围分别为13%~405%和43%~429%. N2O释放通量的季节性和昼夜性变异水平较高,变异系数范围分别为15%~1 005%和17%~1 552%,因此有必要进行全时段监测.

     

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出版历程
  • 收稿日期:  2014-01-22
  • 修回日期:  2014-06-23
  • 刊出日期:  2014-12-25

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