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Lake area changes in the middle Yangtze region of China over the 20th century

机译：20世纪中国中部长江地区的湖泊面积变化

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摘要

The Jianghan Plain and the Dongting lake area, located in the middle reaches of the Yangtze River are famous for their abundant freshwater lakes. The lakes have undergone changes in size and number over thousands of years due to natural causes and human activities. The 20th century particularly, witnessed dramatic changes in the freshwater resources of this region. This paper traces and analyzes lake evolution in the middle reaches of the Yangtze River over the past century. Lakes greater than 0.1 km~2 in size are mapped using Geographic Information System. Data is acquired and integrated from drainage network maps, relief maps, historical maps and remotely sensed images for different time periods. The results indicate that while there has been little change in the number of lakes over the past century, the lake area has experienced a dramatic decrease of 58.06%. The paper also examines the natural processes and human activities that may have contributed to the decrease in lake area. The results show that the decrease in total lake area appears to coincide with periods of rapid land reclamation in the middle reaches of the Yangtze River. Moreover, uncontrolled land reclamation activities can create an increase in sediment deposition in lakes thereby further reducing the lake size. Reduction of the lake area directly affects flood-control and has a negative ecological impact on the environment and on human life and property.
机译：长江中游的江汉平原和洞庭湖区以其丰富的淡水湖而闻名。由于自然原因和人类活动，几千年来，湖泊的大小和数量都发生了变化。特别是20世纪，该地区的淡水资源发生了巨大变化。本文追溯并分析了过去一个世纪以来长江中游的湖泊演变。使用地理信息系统绘制大小超过0.1 km〜2的湖泊。从排水网络图，地形图，历史图和不同时间段的遥感图像中获取并整合数据。结果表明，尽管过去一个世纪湖泊的数量几乎没有变化，但湖泊面积却急剧减少了58.06％。本文还研究了可能导致湖泊面积减少的自然过程和人类活动。结果表明，长江中游总湖泊面积减少与快速开垦时期相吻合。此外，不受控制的土地开垦活动会增加湖泊中的沉积物沉积，从而进一步减小湖泊的面积。湖泊面积的减少直接影响防洪，并对环境和人类生命财产造成负面的生态影响。

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  • 来源
    《Journal of Environmental Management》 |2011年第4期|p.1248-1255|共8页
  • 作者

    Yun Du; Huai-ping Xue; Sheng-jun Wu; Feng Ling; Fei Xiao; Xian-hu Wei;

  • 作者单位

    Institute of Geodesy and Geophysics, Chinese Academy of Sciences, No. 340, Xudong Road, Wuhan, China;

    Institute of Geodesy and Geophysics, Chinese Academy of Sciences, No. 340, Xudong Road, Wuhan, China;

    Institute of Geodesy and Geophysics, Chinese Academy of Sciences, No. 340, Xudong Road, Wuhan, China;

    Institute of Geodesy and Geophysics, Chinese Academy of Sciences, No. 340, Xudong Road, Wuhan, China;

    Institute of Geodesy and Geophysics, Chinese Academy of Sciences, No. 340, Xudong Road, Wuhan, China;

    Institute of Geodesy and Geophysics, Chinese Academy of Sciences, No. 340, Xudong Road, Wuhan, China;

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

    lake evolution; human impacts; the middle yangtze region; land reclamation;

    机译：湖泊演变;人为影响;长江中游地区土地复垦;

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