Man should preserve forests.

人类应保护森林。

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Nine nations in the Amazon region have called on rich countries to provide poorer nations with the funds to preserve forests.

亚马逊地区九个国家呼吁富裕国家向贫穷国家提供资金支持以保护森林。

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As usual, there will be long discussions about how to preserve forests, since deforestation accounts for about a fifth of all greenhouse-gas emissions.

和往常一样，对于如何保护森林又会争论很长一段时间，因为五分之一的温室气体排放来源于森林的损失。

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Giving those villagers an incentive to preserve forests by allowing sustainable levels of harvesting, it turns out, is a far better way to save those forests than erecting tall fences around them.

ECONOMIST: Local difficulties

One way to do this is to make it more economically viable for the countries hosting these rain forests to preserve them.

CNN: All About: Forests and carbon trading

The modern freeways and suburban sprawl give way to high grasslands in the Sierra Azul Open Space Preserve and dense redwood forests north of Santa Cruz.

BBC: The road to Hollywood, California