关于保护江豚的ppt.pptx

;Name :finless porpoise;Distribution : Western Pacific Ocean, India ocean, the sea of Japan and the Chinese coastal tropical to warm temperate waters, Including the Yangtze River Basin Chinese ;长江江豚历年数量;What’s the reason caused us to death;1.Over-fishing。 With international population keeps growing, demand for fish resource also keeps increasing .Yangtze river fish resources decrease rapidly. The food has become less and less for them that feed on fish. For this reason, many of the finless porpoise have to shoal to search for food. Increasing the risk of stranded. We can see this news from TV in recent years.; ;三：螺旋桨 随着长江“黄金水道”的不断开发，长江流域上的船只也越来越多。而靠螺旋桨开动的船只上的螺旋桨成为了“江豚杀手”，大家都知道江豚是靠声呐通讯和生存的动物，而螺旋桨发出的噪声干扰了江豚的声呐系统，导致江豚应为接触螺旋桨而死亡;如何对长江江豚进行保护我们知道的理??知识太多了，在江豚命运的面前这些建议显得那样苍白无力。但是我们真正了解它们吗？ 关心它们未来的命运吗？ 可能在不久的将来，将会出现一条长江江豚已经灭绝的新闻时，我们才会将我们的同情的目光投向它们，为它们的灭绝而感到痛惜。我只是希望现在在我们还能看到它们的时候多关注下它们，关心下这群天生就带着微笑的小家伙们。;;