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首页> 外文期刊>Nordic hydrology >Comparison on soil organic carbon within two typical wetland areas along the vegetation gradient of Poyang Lake, China
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Comparison on soil organic carbon within two typical wetland areas along the vegetation gradient of Poyang Lake, China

机译：Po阳湖植被梯度两个典型湿地土壤有机碳的比较

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摘要

Poyang Lake is an important wetland with international significance in biodiversity conservation and local carbon cycle. A study was conducted to investigate the effects of vegetation communities on seasonal and spatial variations of soil organic carbon (SOC) and dissolved organic carbon (DOC) in two dominant wetlands (dish-shaped pit wetland and delta wetland) of Poyang Lake, China. Results revealed significant variations of SOC and DOC along the vegetation gradient. Maximum accumulation of SOC and DOC was produced in Phragmites community, and the minimum ones in Phalaris community both in spring and in autumn. In comparison with delta wetland, dish-shaped pit wetland obtained higher SOC within the same vegetation type, which indicated that soils of dish-shaped pit wetland had greater capacity to store carbon. Compared with SOC, DOC represented stronger seasonal variations with great increase in autumn, which suggested that DOC was more sensitive to hydrology processing. Furthermore, significant variations of SOC and DOC were closely related to vegetation biomass both in spring and in autumn. Moreover, elevation and gradient also affected the distributing pattern of organic carbon suggesting significant influence of topography characteristics on the carbon pool.
机译：阳湖是重要的湿地，对生物多样性保护和当地碳循环具有国际意义。进行了一项研究，调查了communities阳湖两个主要湿地（盘状坑式湿地和三角洲湿地）植被群落对土壤有机碳（SOC）和溶解有机碳（DOC）的季节和空间变化的影响。结果表明，SOC和DOC随植被梯度显着变化。春季和秋季，芦苇群落中SOC和DOC的积累量最大，而芦苇群落中SOC和DOC的积累量最小。与三角洲湿地相比，碟形坑状湿地在相同植被类型下的SOC更高，这表明碟形坑状湿地的土壤具有更大的碳储存能力。与SOC相比，DOC表现出较强的季节性变化，秋季增加幅度较大，这表明DOC对水文处理更加敏感。此外，春季和秋季，SOC和DOC的显着变化与植被生物量密切相关。此外，海拔和坡度也影响了有机碳的分布模式，表明地形特征对碳库的影响很大。

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  • 来源
    《Nordic hydrology》 |2016年第1期|261-277|共17页
  • 作者

    Xiaolong Wang; Ligang Xu; Rongrong Wan;

  • 作者单位

    Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of sciences (CAS), Nanjing 210008, China;

    Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of sciences (CAS), Nanjing 210008, China;

    Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of sciences (CAS), Nanjing 210008, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    poyang lake; seasonal variation; soil organic carbon; vegetation community;

    机译：阳湖季节性变化;土壤有机碳植被群落;

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