4% of global greenhouse gas emission resulted from deforestation and forest degradation.

全球温室气体排放的17.4%由毁林和森林退化所致。

youdao

Slower population growth will make reductions in global greenhouse gas emissions easier to achieve.

较低的人口增长率将使得减少全球温室气体排放的目标更容易达到。

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At the same time, agriculture and associated deforestation are thought to produce up to 20% of global greenhouse gas emissions.

与此同时，农业和相关森林砍伐被认为产生了全球20%的温室气体排放。

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That's bad news for the environment,he says, because deforestation produces around 17 percent of global greenhouse gas emissions.

VOA: standard.2010.07.28

The target pledges by the world's top-two carbon emitters are seen as hopeful signs for progress at Copenhagen, although a final package for global greenhouse gas reduction remains in doubt.

VOA: standard.2009.11.26

Climatologists say that greenhouse gas emissions, such as carbon dioxide from burning oil and coal, contribute significantly to global warming.

VOA: standard.2009.11.09

Because meat production is so resource intensive, livestock farming actually accounts for 18% of global greenhouse gas emissions.

CNN: 'Meatless Monday' too hot a potato for USDA

According to a recent article from Scientific American, agriculture is responsible for one third of global greenhouse gas emissions from human activity.

FORBES: Impact Investing in Sustainable Agriculture for a New Economy

Global greenhouse gas emissions have risen even faster during the past decade than predicted by the United Nations Intergovernmental Panel on Climate Change (IPCC) and other international agencies.

FORBES: Ten Years And Counting: Where's The Global Warming?