Over the past decades, the wetland systems have turned into one of the most seriously threatened ecosystems around the world due to exacerbation of pollutions and overexploitation of wetland resources.

• 近年来湿地垦殖、污染和资源的过度开发，致使湿地成为全球最受威胁的生态系统之一，我国湿地也同样遭到这些威胁。