湿地是自然界最富生物多样性的生态景观,是人类最重要的生存环境之一,有“地球之肾”之称。城市湿地作为城市稀有的自然资源,是城市绿地生态系统的重要组成部分,在提供水资源、调节气候、涵养水源、降低洪水危害、降解污染物、保护生物多样性等方面,发挥着重要作用。此外,湿地也为城市居民提供了休闲娱乐场所,丰富了市民的业余生活等。因此,其生态效益、社会效益、经济效益非常巨大。目前,我国的国家城市湿地 Wetlands are the most biodiverse ecological landscapes in nature and one of the most important living environments for mankind. They are called “the kidney of the earth.” Urban wetland, as an urban rare natural resource, is an important part of urban green space ecosystem. It plays an important role in providing water resources, regulating climate, conserving water sources, reducing flood damage, degrading pollutants and conserving biodiversity. In addition, wetlands also provide entertainment for urban residents, enriching the public’s amateur life and so on. Therefore, its ecological, social and economic benefits are huge. At present, China’s national urban wetlands