气候变化、物种消亡、污染、水资源匮乏以及环境破坏等问题并不仅仅局限在某一国之内，而是全世界所有居民都要面临的挑战。
Climate change, species loss, pollution, water scarcity and environment damage are challenges that concern all the world's citizens, and the scale of China's problems gives them global importance.
水资源的匮乏已成为全球性的经济问题。
Water resources shortage has become an international economic problem.
其存在的重要问题是：水资源匮乏，植被破坏严重，覆盖率低等；
There are main eco-enviromental problems of short of water resource, vegetation destruction and lower vegetation cover.
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