加勒比国家森林是美国国家森林系统中唯一的热带雨林，占地达28,000英亩(11,330公顷)，保护着首都圣胡安的东部地区。
The only tropical rain forest in the United States' national forest system, Caribbean national forest is a 28,000-acre (11,330-hectare) preserve to the east of the capital, San Juan.
该伙伴计划鼓励各国对森林和珊瑚礁等生态系统的经济价值进行评估，以便将评估结果用于国家制定经济规划。
Partnership to encourage countries to assess the economic value of ecosystems such as forests and coral reefs, for use in national economic plans.
国家森林局的相关人员说这场大火燃烧的主要是草地和灌木林地，生态系统并不会因为这种大火而受影响。
The fires are burning mostly grass and shrub land, ecosystems that are adapted to fire, says the Comisión Nacional Forestal (CONAFOR, Mexico’s National Forest Service).
在布列登森林系统下，资本不能从一个国家自由的流通到另外一个国家，这是由于有外汇兑换控制。
Under Bretton Woods, capital could not flow freely from one country to another because of exchange controls.
利用地理信息系统（GIS）技术，研究1990—2000年张家界国家森林公园景观格局的变化。
Using Geographic Information System(GIS), the change of landscape pattern in Zhangjiajie National Forest Park during 1990—2000 was studied.
为这些服务标价犹如拥有一个保险策略来维持我们的生命支持系统，这也有为拥有森林的国家产生亿万美元收入的潜能。
Putting a price on these services is like taking out an insurance policy to maintain our life support system and has the potential to generate billions of dollars for forest-owning nations.
旅游活动已对张家界国家森林公园土壤生态系统产生了较大影响。
It was concluded that tourism activities significantly affected the soil ecosystem in the Zhangjiajie National Forest Park.
我们的森林，你们的生态系统，他们的木料：社区、养护和基于社区的森林管理国家。
Our Forest, Your Ecosystem, Their Timber: Communities, Conservation, and the State in Community-based Forest Management.
论文研究的内容来源于国家科技部公益类专项基金资助项目“森林灭火用炮、车、弹集成系统”。
The project comes from the State Ministry of Science and Technology category of special public-funded projects, " Fire fighter gas cannon-fire engine-fire extinguishing bomb system."
1999年3月，中部非洲国家在雅温得召开第一届保护该地区森林生态系统首脑会议，通过了《雅温得宣言》。
In March 1999, the Central African country held its first session in Yaounde to protect forest ecosystems in the region Summit adopted the "Yaounde Declaration."
1999年3月，中部非洲国家在雅温得召开第一届保护该地区森林生态系统首脑会议，通过了《雅温得宣言》。
In March 1999, the Central African country held its first session in Yaounde to protect forest ecosystems in the region Summit adopted the "Yaounde Declaration."
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