长江口崇明东滩潮间带甲烷(CH4)排放及其季节变化

doi:10.13249/j.cnki.sgs.2007.03.408

地理科学 ›› 2007, Vol. 27 ›› Issue (3): 408-413.doi: 10.13249/j.cnki.sgs.2007.03.408

长江口崇明东滩潮间带甲烷(CH₄)排放及其季节变化

杨红霞¹, 王东启¹, 陈振楼¹, 陈华¹, 王军¹, 许世远¹, 杨龙元²

1. 华东师范大学资源与环境科学学院, 地理信息科学教育部重点实验室, 上海, 200062;
2. 中国科学院南京地理与湖泊研究所, 江苏, 南京, 210008

收稿日期:2005-12-25 修回日期:2006-04-11 出版日期:2007-05-20 发布日期:2007-05-20
通讯作者: 陈振楼,E-mai:lzlchen@geo.ecnu.edu.cn E-mail:lzlchen@geo.ecnu.edu.cn
基金资助:
国家自然科学基金项目(40173030,40571006);国家自然科学基金重点项目(40131020);上海市“十五”重大科技攻关项目(D5DZ12007);上海市基础研究重点项目(05JC14059);中国博士后科学基金项目资助

Seasonal Variation of CH₄ Emission from Chongming East Intertidal Flat of Yangtze River Estuary

YANG Hong-Xia¹, WANG Dong-Qi¹, CHEN Zhen-Lou¹, CHEN Hua¹, WANG Jun¹, XU Shi-Yuan¹, YANG Long-Yuan²

1. Key Laboratory of Geographical Information Science of Ministry of Education, College of Resources & Environment, East China Normal University, Shanghai 200062;
2. Nanjing Institute of Geography & Limnology, China Academy of Science, Nanjing, Jiangsu 210008

Received:2005-12-25 Revised:2006-04-11 Online:2007-05-20 Published:2007-05-20

摘要/Abstract

摘要： 2004年5月至2005年4月在长江口崇明东滩湿地采用原位静态箱法对甲烷(CH₄)排放通量进行了现场测定。结果表明,崇明东滩潮间带(CM)是大气CH₄的排放源,且CH₄排放具有明显的季节变化规律,中潮滩(CM-2)7月CH₄排放最多,其通量为9.27 mg/(m²·h),在次年4月排放最少,只有0.03 mg/(m²·h)。低潮滩(CM-3)在春季5月CH₄排放最多,通量为0.09 mg/(m²·h);冬季2月CH₄通量值最低,只有0.002 mg/(m²·h),中、低潮滩CH₄年平均排放通量分别为2.06 mg/(m²·h)和0.04 mg/(m²·h)。

关键词: 崇明东滩, 甲烷排放, 季节变化

Abstract: CH₄ emission flux was measured in Chongming east intertidal flat(CM) of the Yangtze River estuary by static closed chamber technique from May 2004 to April 2005.The results show that CM is the source of atmosphere CH₄;and its emission had significant seasonal variation.Emission flux was highest in July from middle flat(CM-2),its flux was 9.27 mg/(m²穐),while the lowest CH₄ flux was 0.03 mg/(m²穐) in April In low flat(CM-3) CH₄ emission was maximum in May and its flux was 0.09 mg/(m²穐),while the minimum flux was 0.002 mg/(m²穐) in February.The annual average CH₄ emission flux of was 2.06mg/(m²穐) from CM-2 and 0.04 mg/(m²穐) from CM-3 respectively.CH₄ emission flux from CM-2 was higher than that from CM-3 obviously,and vegetation,temperature and contents of sediment organic carbon(OC) are major factors which control the CH₄ emission.There were significant positive relationships between CH₄ flux and temperature and illumination.The photosynthesis of the tidal flat plant,Scirpus mariqueter,increased the CH₄ emission in CM-2,but the photosynthesis of bethonic alga and respiration of Scirpus mariqueter restrained the CH₄ emission.

Key words: Chongming east intertidal flat, CH₄ emission, seasonal variation

中图分类号:

X142

杨红霞, 王东启, 陈振楼, 陈华, 王军, 许世远, 杨龙元. 长江口崇明东滩潮间带甲烷(CH₄)排放及其季节变化[J]. 地理科学, 2007, 27(3): 408-413.

YANG Hong-Xia, WANG Dong-Qi, CHEN Zhen-Lou, CHEN Hua, WANG Jun, XU Shi-Yuan, YANG Long-Yuan. Seasonal Variation of CH₄ Emission from Chongming East Intertidal Flat of Yangtze River Estuary[J]. SCIENTIA GEOGRAPHICA SINICA, 2007, 27(3): 408-413.

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长江口崇明东滩潮间带甲烷(CH₄)排放及其季节变化

Seasonal Variation of CH₄ Emission from Chongming East Intertidal Flat of Yangtze River Estuary

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