| 引用本文: | 王国平,刘景双,汤洁,夏威岚.吉林向海沼泽湿地典型剖面沉积及年代序列重建.湖泊科学,2003,15(3):221-228. DOI:10.18307/2003.0305 |
| WANG Guoping,LIU Jingshuang,TANG Jie,XIA Weilan.Sedimentation Characterization and Reconstruction of Time-scale of Typical Profile in Xianghai Marsh Wetlands, Jilin Province. J. Lake Sci.2003,15(3):221-228. DOI:10.18307/2003.0305 |
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| 摘要: |
| 沼泽湿地发育过程中堆积的各类沉积物真实地记录下区域环境演变与沼泽湿地发育过程. 本文以无尾河下游漫流区——向海沼泽湿地为研究对象,对其典型沉积剖面结构、沉积物容重、年龄指标、沉积速率等多项沉积记录进行了综合剖析. 结果表明:沼泽沉积物的层序关系可以揭示沼泽的形成途径及环境变化;溪边沼泽接受更多的矿质沉积物;1880-1885年该区域出现河道变迁的痕迹;向海沼泽湿地沉积速率与典型的河口三角洲类似,体现了河口尾端湿地的特点;近50年来,向海沼泽湿地沉积速率急剧上升,其原因可能与解放后该流域人类活动增强、植被破坏、水土流失严重有关. 在时间上,与流域上游大型露天煤矿开采时段有较好的耦合性. |
| 关键词: 剖面结构 容重 沉积速率 向海沼泽湿地 |
| DOI：10.18307/2003.0305 |
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| 基金项目:中国科学院湖沼三期项目(ZKHZ-3-06);知识创新工程重要方向项目(KZCX2-302)(KZCX3-SW-332)联合资助. |
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| Sedimentation Characterization and Reconstruction of Time-scale of Typical Profile in Xianghai Marsh Wetlands, Jilin Province |
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WANG Guoping1,2, LIU Jingshuang1, TANG Jie2, XIA Weilan3
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1.Northeast Institute of Geography and Agricultural Ecology, CAS, Changchun 130012, P. R. China;2.College of Environment and Resources, Jilin University, Changchun, 130026, P. R. China;3.Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, P. R. China
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| Abstract: |
| Cumulated sediments during marsh wetlands development really recorded the region environment change and marsh processes. Here we reported a case study on the Xianghai marsh wetlands at downstream of an anourous river-Huolin River, Jilin Province. By analysis of sediment layer structure, sediment bulk density, and sedimentation rate in the typical sedimentation profiles, the following results are revealed:The layer relationship among marsh sediments could reveal the marsh formation and its environment change; The riverine marsh might receive much more mineral sediments; the mark of river shifting near 1880-1885AD in the research field was discovered; That the sedimentation rates of Xianghai marsh wetlands were similar to typical estuarine deltas indicated the property of trailing end of estuarine; The cause of suddenly accelerating of the sedimentation rates in Xianghai marsh wetlands in recent 50 years, might related with the human activities strengthen, the plants destroy, and top soil strictly lose after liberation. Furthermore, on time scale, the suddenly accelerating of the sedimentation rates had much better coupling with the mining period of time of large open-cast coal located on upstream of the Huolin River catchments. |
| Key words: Sedimentation profile structure bulk density sedimentation rate Xianghai marsh wetlands |
