| 三江平原湿地沉积物有机碳与水分的关系 |
| 摘要点击 2805 全文点击 2217 投稿时间：2005-02-21 修订日期：2005-04-18 |
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| 中文关键词 有机碳 水分 沉积物 湿地 |
| 英文关键词 organic carbon water content sediment wetland |
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| 中文摘要 |
| 研究了三江平原开垦湿地和3类典型天然湿地(泥炭沼泽、腐殖质沼泽和沼泽化草甸)沉积物剖面有机碳和水分含量特征,分析了湿地沉积物有机碳和水分含量的关系.结果表明:4类湿地沉积物储碳层厚度,剖面有机碳和水分含量存在明显的差异.其同一类型湿地沉积物剖面有机碳与水分含量之间为极显著(p<0.01)相关关系.通过探讨湿地沉积物有机碳和水分的关系,阐明了湿地生态环境功能的演变趋势.研究结果进一步说明了加强湿地的保护和湿地恢复,可以缓解由大气CO2浓度升高所引起的全球气候变化. |
| 英文摘要 |
| Characteristic and relationship were analyzed between organic carbon and water content in four types of wetlands(one cultivated wetland and three typical natural wetlands including fen,marsh and marshy meadow) in Sanjiang Plain of Northeastern China.Results show that there are distinct differences in the depths of organic carbon deposition,the organic carbon and water content in sediment profiles of these four type wetlands.There are significant positive correlations between organic carbon and water content in sediment profiles of the same type wetland(p<0.01;R2=0.8276,0.9917,0.9916 and 0.9782 for cultivated wetland,fen,marsh and marshy meadow,respectively).The trend for evolution of ecological and environmental functions of wetland ecosystems is discussed based on the analysis of the relationship between soil organic carbon and water content.The results further illustrate the viewpoint that the protection and restoration of wetlands could lessen the global climate change caused by the increase in atmospheric CO2concentration. |
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