LU Xian-guo, LIU Hong-yu, YANG Qing. null[J]. Chinese Geographical Science, 2000, 10(4): 296-301.
Citation: LU Xian-guo, LIU Hong-yu, YANG Qing. null[J]. Chinese Geographical Science, 2000, 10(4): 296-301.

null

Funds:  null
  • Received Date: 2000-08-27
  • Publish Date: 2000-12-20
  • The estimated total area of wetland in China is more than 25.9 million hectares including about 11.9 million hectares of marshes and bogs, 9.1 million hectares of lake and about 2.2 million hectares of coastal salt marshes and mudflats. The area of wetland is equivalent to 2.7% of the land surface. China also has 2.7 million hectares of shallow sea water (less 5m in depth at low tide). Marshes and bogs are equivalent 1.3% of the land surface. Only three provinces(regions)— Qinghai, Xizang (Tibet)and Heilongjiang— have a larger total area of marsh and bog. According to the structure, type and development of wetland in different river basins, wetland can be classified nine main regions. The experiments indicate that the coefficient of the marsh to regulate flood is similar to that of lakes. Wetlands occupy 17.8% of the Sanjiang Plain area, the annual carbon contribution is 0.78× 104t. Carbon released from marsh soil return into atmosphere is 3.95× 106t/a. At present there is a sharp contradiction between population growth and natural resources shortage, causing wetland to be exerted with huge pressures and serious threats.
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Article Metrics

Article views(1009) PDF downloads(1054) Cited by()

Proportional views
Related

null

Funds:  null
    Key words: 
  • null /
  •  /
  •  /
  •  /

Abstract: The estimated total area of wetland in China is more than 25.9 million hectares including about 11.9 million hectares of marshes and bogs, 9.1 million hectares of lake and about 2.2 million hectares of coastal salt marshes and mudflats. The area of wetland is equivalent to 2.7% of the land surface. China also has 2.7 million hectares of shallow sea water (less 5m in depth at low tide). Marshes and bogs are equivalent 1.3% of the land surface. Only three provinces(regions)— Qinghai, Xizang (Tibet)and Heilongjiang— have a larger total area of marsh and bog. According to the structure, type and development of wetland in different river basins, wetland can be classified nine main regions. The experiments indicate that the coefficient of the marsh to regulate flood is similar to that of lakes. Wetlands occupy 17.8% of the Sanjiang Plain area, the annual carbon contribution is 0.78× 104t. Carbon released from marsh soil return into atmosphere is 3.95× 106t/a. At present there is a sharp contradiction between population growth and natural resources shortage, causing wetland to be exerted with huge pressures and serious threats.

LU Xian-guo, LIU Hong-yu, YANG Qing. null[J]. Chinese Geographical Science, 2000, 10(4): 296-301.
Citation: LU Xian-guo, LIU Hong-yu, YANG Qing. null[J]. Chinese Geographical Science, 2000, 10(4): 296-301.

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return