The biological components of ecological systems include producers, consumers and decomposers.

生态系统中的生物成分包含生产者、消费者和分解者。

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Many physical and ecological systems are being affected by the world's warming climate, researchers say.

据研究者声称，许多自然生态系统都受到了全球气候变暖的影响。

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The wetland is one of the three ecological systems in the world and it is the important part of the Globe.

湿地为全球的三大生态系统之一，是地球生态系统的重要组成部分。

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The study says mangrove trees provide more than one and a half billion dollars worth of services to ecological systems worldwide.

VOA: special.2010.04.20

It has failed the fragile ecological systems on which we depend for survival.

BBC: Has Western capitalism failed?

The importance of underground water for supporting business and ecological systems is assume along with all contradictory aspects.

UNESCO: OFFICE IN TASHKENT

Protect and restore the integrity of Earth's ecological systems, with special concern for biological diversity and the natural processes that sustain life.

CNN: Earth Charter sets course for sustainable living