| 三江平原小叶章湿地系统硫的输入及输出动态 |
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| 引用本文： | 李新华,刘景双,朱振林. 三江平原小叶章湿地系统硫的输入及输出动态[J]. 生态环境, 2008, 17(5) |
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| 作者姓名： | 李新华 刘景双 朱振林 |
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| 作者单位： | 1. 山东省农科院可持续发展研究所,山东,济南,250100
2. 中国科学院东北地理与农业生态研究所,吉林,长春,130012 |
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| 基金项目： | 中国科学院知识创新工程项目 ， 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 以三江平原小叶章(Calamagrostis angutifolia)湿地系统为研究对象,应用野外原位观测法研究了小叶章湿地系统硫的大气沉降输入及其输出规律.结果表明大气湿沉降中硫的月均含量变化明显,其原因主要与人类活动、降水强度及频次有关;硫沉降量具有明显的月变化特征,经估算三江平原小叶章湿地硫的年沉降总量(以S计)为113 mg·m-2·a·-1.小叶章湿地H2S、COS的排放通量均具有明显的季节和日变化规律.H2S和COS的平均释放通量(以S计)分别为O.34 μg·m-2·h-1和-0.29μg·m-2·h-1;小叶章湿地系统在生长季向大气排放H2S的量(以S计)为1.42 mg·m-2,从大气吸收COS的量(以S计)为1.83 mg·m-2.小叶章湿地系统硫的输入量远高于硫输出量,其差值为113.41 mg.m-2·a-1,这表明硫在小叶章湿地系统中处于累积状态,湿地存在潜在的酸化趋势.
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| 关 键 词： | 硫 输入 输出 小叶章湿地系统 三江平原 动态 |
Dynamics of sulfur inpput and output to the Calamagrostis angustifolia wetland system in Sanjiang Plain |
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| Li Xinhua,Liu Jingshuang,Zhu Zhenlin. Dynamics of sulfur inpput and output to the Calamagrostis angustifolia wetland system in Sanjiang Plain[J]. Ecology and Environmnet, 2008, 17(5) |
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| Authors: | Li Xinhua Liu Jingshuang Zhu Zhenlin |
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| Affiliation: | Li Xinhua1,Liu Jingshuang2,Zhu Zhenlin1 1. Shan Dong Institute of Agriculture Sustainable Development,Jinan 250100,China,2. Northeast Institute of Geography , Agricultural Ecology,CAS. Changchun 130012 |
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| Abstract: | Using the field observation in situ method,the sulfur output from atmospheric deposition and input were studied in Calamagrostis angustifolia wetland ecosystem in the Sanjiang Plain. The results showed that there were significant changes among monthly average SO42-concentrations in atmospheric wet deposition,and the reasons were mainly correlated with human activities,precipitation intensity and frequency,wind direction and geographical location. The changes of sulfur deposition amount were sig-nificant. Th... |
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| Keywords: | sulfur input output Calamagrostis angustifolia wetland systerm Sanjiang Plain dynamics |
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