换一批摘要Greenhouse gas emissions are increas-ing every year and their effect on the environment is becoming increasingly serious. In 2009, the concen-tration of carbon dioxide in the earth's atmosphere reached 387 μL/L, the highest level in recorded histo-ry. This paper summarizes the global carbon emission situation, sources of greenhouse gases, and the con-tribution of agriculture to the accumulation of green-house gases. Several scientific measures are proposed to reduce greenhouse gas emissions resulting from ru-minant production such as improving animal perform-ance, regulating the rumen environment, and reduc-ing the amount of greenhouse gases emitted from live-stock manure.
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