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历史时期长江水灾发生的规律表明,随着人类活动的增加,地区开发的加强,生态调节机制的破坏,长江水灾越到近期越为频繁。长江流域水灾频率的增强,基本上是与历史上地区开发的进程同步的。过度的垦荒引起严重的生态失控,进而导致水土流失,河湖淤塞,加之围湖造田,最终成为引发和加剧流域洪涝灾害的直接原因。当前,加强生态保护,控制人口增长,减少围湖造田,实施高科技减灾工程,是谋求长江流域社会经济可持续发展之良策
The history of the flood in the Yangtze River Basin shows that with the increase of human activities, the strengthening of regional development and the destruction of ecological regulation mechanism, the flood in the Yangtze River is more and more frequent in recent years. The increase in the frequency of floods in the Yangtze River Basin is basically synchronized with the process of developing the region in history. Excessive reclamation led to serious ecological runaway, which led to soil erosion, rivers and lakes, combined with the lakes around the lake, and eventually lead to and aggravate the direct cause of the watershed floods. At present, strengthening ecological protection, controlling population growth, reducing the reclamation of lakes and lakes and implementing high-tech disaster reduction projects are good strategies for seeking sustainable social and economic development in the Yangtze River Basin