| 北京市城市湖泊上空甲烷浓度水平和季节特征 |
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| 引用本文： | 艾永平,王效科,弓晓峰,段晓男,欧阳志云.北京市城市湖泊上空甲烷浓度水平和季节特征[J].城市环境与城市生态,2009(6). |
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| 作者姓名： | 艾永平 王效科 弓晓峰 段晓男 欧阳志云 |
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| 作者单位： | 南昌大学环境与化学工程学院;中国科学院生态环境研究中心城市与区域生态国家重点实验室;南昌大学鄱阳湖环境与资源利用教育部重点实验室; |
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| 基金项目： | 中国科学院知识创新重要方向性项目(KZCX2-YW-422); 科技部国家重点实验室专项经费(SKLURE2008-1-01) |
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| 摘 要： | 通过对北京市市区内大于10 000 m2的10个湖泊上空0.5 m处甲烷浓度的季度观测,研究了北京市城市湖泊上空甲烷的浓度水平,并对其中4个典型的湖泊进行了每月1~2次的观测,分析了城市湖泊上空甲烷浓度的连续变化特征。结果表明湖泊上空甲烷浓度年平均值为2.337±0.431 mL/m3,高于全球均值和其他相关研究人员对北京市上空监测的结果。湖泊上空甲烷浓度季节之间的差异性显著(P<0.01),夏季的甲烷浓度较高(2.758±0.516mL/m3),秋季和春季相对较低。4个典型湖泊上空甲烷浓度连续变化具有一定的规律,大都在7-8月份达到甲烷浓度的高峰期,3月初融冰时都会有小幅增加;位于市中心的什刹海上空甲烷浓度相对较高。这表明了北京市内湖泊是甲烷排放的一个重要源头,同时也反映了北京作为一特大城市,其湖泊上空甲烷浓度受人类活动影响的特征。
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| 关 键 词： | 城市湖泊 甲烷浓度 季节特征 |
Evolutions and Seasonal Characteristics of Methane Concentrations on Urban Lakes in Beijing |
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| AI Yong-ping ,WANG Xiao-ke ,GONG Xiao-feng ,DUAN Xiao-nan ,OUYANG Zhi-yun ,Ministry of Education,Nanchang ,China.Evolutions and Seasonal Characteristics of Methane Concentrations on Urban Lakes in Beijing[J].Urban Environment & Urban Ecology,2009(6). |
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| Authors: | AI Yong-ping WANG Xiao-ke GONG Xiao-feng DUAN Xiao-nan OUYANG Zhi-yun Ministry of Education Nanchang China |
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| Institution: | AI Yong-ping 1,2,WANG Xiao-ke 2,GONG Xiao-feng 1,3,DUAN Xiao-nan 2,OUYANG Zhi-yun 2 (1.School of Environmental , Chemical Engineering of Nanchang University,Nanchang 330031,China,2.State Key Laboratory of Urban , Regional Ecology,Research Center for Eco-Environmental Science,Chinese Academy of Science,Beijing 100085,3.The Key Laboratory of Poyang Lake Ecology , Resource Utilization(Nanchang University),Ministry of Education,Nanchang 330047,China) |
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| Abstract: | The concentrations of methane were determined quarterly from the ten urban lakes greater than 10 000 m 2 in Beijing.And the continuous monitoring was carried out in four typical lakes.The results showed that the methane concentrations was higher than that of the global average and those from the urban lakes of Beijing.And the annual average concentration was 2.337±0.431 mL/m 3,which was higher than other monitoring results in Beijing atmospherice.Throughout the year the methane concentration between seasons... |
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| Keywords: | urban lake the methane concentration seasonal variation characteristic |
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