| 三江平原泥炭沼泽沉积物中营养物质的分布规律 |
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| 引用本文： | 于君宝,刘景双,王金达.三江平原泥炭沼泽沉积物中营养物质的分布规律[J].湿地科学,2004,2(1):31-35. |
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| 作者姓名： | 于君宝 刘景双 王金达 |
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| 作者单位： | 中国科学院东北地理与农业生态研究所,吉林 长春 130021 |
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| 基金项目： | 中国科学院知识创新工程重要方向性项目(KZCX3 -SW -3 3 2 )，中国科学院知识创新工程重大项目 (KZCX1-SW -0 1)，中国科学院知识创新工程项目 (KZCX2 -3 0 2 ) |
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| 摘 要： | 采用冬季采样，现场分层的方法，系统地研究了三江平原沼泽中河床一河漫滩型泥炭地和谷底洼地型泥炭沉积中总氮、总磷和有机质等营养物质的分布特征。结果表明，在不同沉积层中，总磷明显在草根层富集，总氮和有机质在泥炭上层含量最高，其他营养物质含量随着深度的增加而逐渐降低。河床一河漫滩型和谷底洼地型泥炭沉积物中总氮和总磷含量随着泥炭粒级的减小而明显增加。河流型泥炭沉积物不同机械组分中总氮的变化幅度远远大于谷底洼地型，两种类型泥炭地不同机械组分中总磷含量的变化差异幅度不大。有机质含量随着泥炭粒级的减小而明显减少。河床一河漫滩型泥炭地和谷底洼地型泥炭地中总氮含量与有机质含量呈显著的正相关，相关系数分别为0.953和0.944，泥炭中的氮主要以有机氮形态存在，而总磷含量与有机质含量的关系不显著。
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| 关 键 词： | 三江平原 泥炭 沼泽沉积物 营养物质 有机氮 磷 生态系统 |
| 文章编号： | 1672-5948(2004)01-031-05 |
| 修稿时间： | 2003年6月10日 |
The Distribution Law of Nutrient Materials in Peat Sediments in Sanjiang Plain |
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| YU Jun-Bao LIU Jing-Shuang WANG Jin-Da.The Distribution Law of Nutrient Materials in Peat Sediments in Sanjiang Plain[J].Wetland Science,2004,2(1):31-35. |
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| Authors: | YU Jun-Bao LIU Jing-Shuang WANG Jin-Da |
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| Abstract: | Base on the methods of sampling in winter and dividing soil layer on the site, the distribution character of nutrient materials such as TN, TP and organic matter in peat sediment of riparian-flat and valley depression land in Sanjiang Plain, which is the most extensive freshwater marsh wetland in China, was studied systematically. The results showed that the TP was accumulated in A se layer obviously, and the content of TN and organic matter was highest in Hi 1 layer than that in others. Then the content of each nutrient was decreasing step by step with increasing of deposit layer depth. With decreasing of peat granule size, the content of TN and TP was increasing obviously in peat sediment of river bed-flood land and valley depression land. The ratio between TN content in <0.074mm granule component and TN content in >0.30mm granule component was 1.077-1.412, and the ratio of TP was about 1.11. The variation range of TN content in different granule size components in sediment of river bed-flood land was more greatly than that of valley depression land. While the difference of variation range of TP content in different granule size components was little in river bed-flood land and valley depression land. The content of organic matter was decreased obviously following decreased of peat granule size. The ratio between organic matter content in <0.074mm granule component and organic matter content in >0.30mm granule component was 0.79-0.89 in peat sediment of river bed-flood land, and the ratio of organic matter was 0.74 in peat sediment of valley depression land. There was a remarkable positive correlation between TN content and organic matter content in river bed-flood peat land and valley depression peat land. The correlative coefficients were 0.953 and 0.944, respectively. The main existent form of nitrogen in peat was organic nitrogen. While the correlation between TP content and organic matter content in peat was not obvious. |
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| Keywords: | freshwater marsh peat nutrient materials distribution law |
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