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Study Finds More Trees on Farms Than Was Thought Farmers, especially in developing countries, are often criticized for cutti
Study Finds More Trees on Farms Than Was Thought Farmers, especially in developing countries, are often criticized for cutti
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2015-01-13
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Study Finds More Trees on Farms Than Was Thought Farmers, especially in developing countries, are often criticized for cutting down forests. But a new study suggests that many farmers recognize the value in keeping trees. Researchers using satellite images found at least ten percent tree cover on more than one billion hectares of farmland. That is almost half the farmland in the world. Earlier estimates were much lower but incomplete. The authors of the new study say it may still underestimate the true extent worldwide. The study found that climate conditions alone could not explain the amount of tree cover in different areas. Nor could the size of nearby populations, meaning people and trees can live together. There are areas with few trees but also few people, and areas with many trees and many people. The findings suggest that things like land rights, markets or government policies can influence tree planting and protection.
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专业英语四级
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