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	New mechanism and force driven earth environment
	Guo W.
	2003
关键词	mechanism earth environment force nature factor economic factor climate-change aerosol deforestation precipitation constraints uncertainty variability enhancement emissions pastures
页码	198-202
英文摘要	In the twenty' first century, earth's temperature will rise 0.8degrees to 4.8degreesC than 1990', with no CO2 emissions control. The rate is 6-40 times of temperature change in glacial to interglacial. The direct effect of aerosol produced by land use is caused by the absorption and scattering of solar radiation. The cooling effect of aerosol has been estimated by climate models to be -1 to -4.4 Wm(-2) in the global mean. Such results might indicate that human activity may be altering clouds and natural precipitation on a global scale. Deforestation could decrease precipitation and increase the length of the dry season via the mechanisms between climate and ecosystem. All of these, without fail, the areal development in economy is at the bottom of. The average of global agricultural land base in 2050 will be 18% larger than at present. Economic policy of countries over the world is the most active factor for environmental change coming 100 years.
收录类别	CPCI
会议录出版者	Acta Press
语种	英语
ISBN号	0-88986-337-7
内容类型	会议论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/25113]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Guo W.. New mechanism and force driven earth environment[C]. 见:.

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