长江流域资源与环境 >> 2011, Vol. 20 >> Issue (06): 685-.

• 生态环境 • 上一篇    下一篇

长江口南支岛屿沙洲湿地陆向发育过程中表层沉积物有机碳变化

梅雪英,张修峰   

  1. (1. 安徽农业大学资源与环境学院, 安徽 合肥 230036|2.暨南大学水生生物研究所, 广东 广州 510632)
  • 出版日期:2011-06-20

ORGANIC CARBON IN SURFACE SEDIMENTS OF ISLAND WETLANDS DEVELOPING TO LAND IN SOUTH BRANCH OF CHANGJING RIVER ESTUARY

MEI Xueying1,2, ZHANG Xiufeng2   

  1. (1.College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China; |2. Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
  • Online:2011-06-20

摘要:

通过对白茆沙、扁担沙、中央沙、九段沙和崇明岛等长江口南支湿地表层沉积物有机碳含量的测定,研究河口岛屿沙洲湿地陆向发育过程中表层沉积物有机碳变化。结果得出:长江口南支岛屿沙洲湿地陆向发育过程中,表层沉积物有机碳含量逐步增加。处在发育前期的岛屿沙洲湿地,表层沉积物有机碳含量低,如白茆沙仅1057%,随着岛屿沙洲的发育,表层沉积物有机碳含量逐渐升高,如发育较为成熟的崇明东滩湿地达3176%;另外,从高程较低的光滩到发育较为成熟的芦苇带,表层沉积物有机碳含量也逐渐增加,其中芦苇带的含量最高(3004%),海三棱藨草带次之(1812%),光滩较低(1436%);再者,随着岛屿沙洲湿地的陆向发育,其表层沉积物有机碳分布越来越不均匀,也说明了岛屿沙洲陆向发育过程中表层沉积物有机碳含量的变化趋势。这表明河口岛屿沙洲湿地陆向演变过程中,表层沉积物发挥着积极的有机碳汇聚功能

Abstract:

The Yangtze River estuary is one of the largest estuaries in the world. Baimaosha, Biandansha, Zhongyangsha, Jiuduansha and Chongming island have been formed by rapid sedimentation in different stages of the estuary development. As sedimentation has progressed, there are associated changes in organic carbon content in the surface sediments. Few previous research has been completed on organic carbon concentrations in surface sediments of the estuary islands in relation to the growth of the island wetlands. This research investigated the concentrations of organic carbon within surface sediments of the wetland island progressing to land. Results showed that the carbon content in the surface sediments increased when the island wetlands progressed to land. The most recent formed wetland island had a low organic carbon content, such as Baimaosha, 1057%; with the development of the island wetlands to land, the organic carbon content increased gradually, such as the sediments in east beach of Chongming island, had a concentration of 3176%. In addition, the organic carbon content increased gradually with the increase in altitude. The highest concentrations were in the reed zone, 3004%; the lowest were in bare beach region, 1436%; the concentrations of 〖WTBX〗Scirpus mariqueter〖WTBZ〗 zone were between them, 1812%. However, the organic carbon content became uneven when the island wetlands was developing to land, which also explained the changing law of the organic carbon content in the surface layer of the island wetlands development. The study indicates that the island wetlands in estuary play an important role in storing organic carbon when processing to land

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 李 娜,许有鹏, 陈 爽. 苏州城市化进程对降雨特征影响分析[J]. 长江流域资源与环境, 2006, 15(3): 335 -339 .
[2] 张 政, 付融冰| 杨海真, 顾国维. 水量衡算条件下人工湿地对有机物的去除[J]. 长江流域资源与环境, 2007, 16(3): 363 .
[3] 孙维侠, 赵永存, 黄 标, 廖菁菁, 王志刚, 王洪杰. 长三角典型地区土壤环境中Se的空间变异特征及其与人类健康的关系[J]. 长江流域资源与环境, 2008, 17(1): 113 .
[4] 许素芳,周寅康. 开发区土地利用的可持续性评价及实践研究——以芜湖经济技术开发区为例[J]. 长江流域资源与环境, 2006, 15(4): 453 -457 .
[5] 郝汉舟, 靳孟贵, 曹李靖, 谢先军. 模糊数学在水质综合评价中的应用[J]. 长江流域资源与环境, 2006, 15(Sup1): 83 -87 .
[6] 刘耀彬, 李仁东. 现阶段湖北省经济发展的地域差异分析[J]. 长江流域资源与环境, 2004, 13(1): 12 -17 .
[7] 陈永柏,. 三峡工程对长江流域可持续发展的影响[J]. 长江流域资源与环境, 2004, 13(2): 109 -113 .
[8] 时连强,李九发,应 铭,左书华,徐海根. 长江口没冒沙演变过程及其对水库工程的响应[J]. 长江流域资源与环境, 2006, 15(4): 458 -464 .
[9] 翁君山,段 宁| 张 颖. 嘉兴双桥农场大气颗粒物的物理化学特征[J]. 长江流域资源与环境, 2008, 17(1): 129 .
[10] 王书国,段学军,姚士谋. 长江三角洲地区人口空间演变特征及动力机制[J]. 长江流域资源与环境, 2007, 16(4): 405 .