| 沼泽甲烷排放及其主要影响因素 |
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| 引用本文： | 丁维新,蔡祖聪.沼泽甲烷排放及其主要影响因素[J].地理科学,2002,22(5):619-625. |
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| 作者姓名： | 丁维新 蔡祖聪 |
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| 作者单位： | 中国科学院南京土壤研究所,江苏,南京,210008 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目 (KZCX2 -30 2 )，国家重点基础研究发展规划项目 (G19990 1180 5 )资助。 |
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| 摘 要： | 综合评述了不同类型沼泽产生、氧化和排放甲烷能力的差异及其主要影响因素。沼泽水位的变化引起沼生植物种群更替，从而形成不同类型的沼泽及其土壤剖面形态特征，进而导致沼泽产生和排放甲烷能力的不同。腐泥沼泽产生和排放甲烷能力最强，泥炭沼泽次之，森林沼泽再次之，苔藓泥炭沼泽最弱。甲烷排放以夏季最多，春秋季次之，冬季最低。在影响沼泽排放甲烷能力中，水位的变化最为强烈，底物、植物种类及数量和温度次之，pH、外源氮和土壤性质也有一定的作用。
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| 关 键 词： | 沼泽 甲烷排放 自然湿地 沼泽土壤 氧化 生物 气候 地形 |
| 文章编号： | 1000-0690(2002)05-0619-07 |
Methane Emission from Mires and Its Influencing Factors |
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| DING Wei-xin,CAI Zu-cong.Methane Emission from Mires and Its Influencing Factors[J].Scientia Geographica Sinica,2002,22(5):619-625. |
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| Authors: | DING Wei-xin CAI Zu-cong |
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| Abstract: | The paper reviews the abilities of methane production, oxidization and flux of different mire types and their influencing factors. The depth of water table affects the pattern of vegetation in mires, which, in turn, strongly influences the development and soil profile of mires, resulting in discrepancy in flux of methane emission from various mires. The patterns of methane emission in different type of mires and different season are as following: marsh > fen > swamp > bog, and summer > spring or/and fall > winter, respectively. The main factors influencing flux of methane emission from mires are the depth of water table, substrate, type and density of plant in mires, temperature, pH, exogenous nitrogen and soil basic properties. |
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| Keywords: | mires mire type flux of methane emission influencing factors |
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