Wetlands have the largest carbon storage among terrestrial ecosystems on the earth, and are estimated to contain 20% of carbon in global terrestrial ecosystems.

湿地是地球上碳储量最大的陆地生态系统，其碳储量约占陆地生态圈总碳量的20%。

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Wetlands are one of the most productive ecosystems of the nature and the most important living environment of mankind.

湿地是自然界最具生产力的生态系统和人类最重要的生存环境之一。

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Wetlands usually occurred at the interface of terrestrial ecosystems and aquatic ecosystems, and formed by the interaction of them.

湿地是分布于陆地系统和水体系统之间的、由陆地系统和水体系统相互作用形成的自然综合体。

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Wetlands are ecosystems saturated with water, either seasonally or permanently.

UNESCO: UK National Commission for UNESCO - UNESCO Conventions, Recommendations & Declarations in the UK

Groundwater is also important in sustaining streams, lakes, wetlands, and associated ecosystems.

UNESCO: THEMES

In addition, EPA's and USDA's relevant authorities cover a range of natural resources and their supporting ecosystems, including waters, sediments, barrier islands, wetlands, soils, land management, air resources, and drinking water supplies.

WHITEHOUSE: Executive Order -- Gulf Coast Ecosystem Restoration