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闽江河口感潮湿地入侵种互花米草甲烷通量及影响因子
  • ISSN号:1000-0690
  • 期刊名称:地理科学
  • 时间:0
  • 页码:81-90
  • 语言:中文
  • 分类:P593[天文地球—地球化学;天文地球—地质学]
  • 作者机构:[1]福建师范大学亚热带湿地研究中心湿润亚热带生态地理过程省高校重点实验室福建师范大学地理科学学院,福建福州350007
  • 相关基金:国家自然科学基金项目(40671174)、福建省自然科学基金项目(2006J0128)、福建省自然地理学重点学科项目资助.
  • 相关项目:土地利用变化及模拟酸沉降对河口区湿地甲烷排放影响研究
中文摘要:

2007年利用静态箱-气相色谱仪法对闽江河口湿地外来入侵种互花米草斑块甲烷通量进行测定。结果表明,互花米草甲烷排放通量有明显的季节变化,涨潮前和落潮后甲烷通量平均值分别为13.12和12.94mg/(m^2·h);涨落潮过程,互花米草斑块排放到潮水的甲烷通量(3.07mg/(m^2·h)大于排放到大气的甲烷通量(2.35mg/(m^2·h),差异不显著;涨落潮过程中排向大气和潮水的甲烷通量之和(5.42mg/(m^2·h)与涨潮前、落潮后甲烷通量差异显著;互花米草排向大气甲烷总通量86.86g/(m^2·a),排向潮水甲烷总通量7.84g/(m^2·a)。

英文摘要:

In 2007, the enclosed chamber technique was used and the measurements on methane flux from Spartina alterniflora were taken during three periods (before the flood, in the course of rising and ebbing tide, and after the ebb) in the Shanyutan wetland which is the largest wedand in the Min River estuary region. The results showed that methane fluxes had obvious seasonal variation. The average methane flux from S. alterniflora before flood and after ebb were 13.12 and 12.94 mg/( m2· h) respectively; the monthly methane flux was lower after the ebb in some months, whereas in other months, emission was either higher after the ebb, or there was no difference; in the course of rising and ebbing tide, the methane flux [3.07 mg/(m^2 ·h)] to hydrosphere was higher than that [ 2.35 mg/( m^2·h)] to atmosphere(p 〉 0.05 ) ; the total methane flux to atmosphere and hydrosphere from invasive S. alterniflora patches was 86.86 and 7.84 g/( m^2 · h) respectively. The correlations between methane flux from S. alterniflora and temperature and salinity were lower, and was higher between methane flux and moisture of sediment (0 -20 cm).

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期刊信息
  • 《地理科学》
  • 北大核心期刊(2011版)
  • 主管单位:中科院
  • 主办单位:中国科学院 东北地理与农业生态研究所
  • 主编:陆大道
  • 地址:长春市高新北区盛北大街4888号
  • 邮编:130012
  • 邮箱:geoscien@iga.ac.cn
  • 电话:0431-85542212 85542217
  • 国际标准刊号:ISSN:1000-0690
  • 国内统一刊号:ISSN:22-1124/P
  • 邮发代号:8-31
  • 获奖情况:
  • 中国自然科学核心期刊,中国地理学会优秀地理期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,荷兰文摘与引文数据库,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:39183