| 沙漠与沙漠化 |
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| Impact of Human Activities on Sandy Desertification of Northwestern China and Countermeasures Analysis |
| ZHANG Tai-ren1,2, ZHANG Yu-feng3, CHAI Xiu-mei4, LI Zi-zhen1 |
| 1.Arid and Grassland Ecology Key Laboratory of Ministry of Education, Lanzhou University, Lanzhou 730000, China; 2.China Meteorological Administration, Beijing 100081, China; 3.Renmin University of China, Beijing 100081, China; 4.Meteorological Observation Centre of China Meteorological Administration, Beijing 100081, China |
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Abstract Desertification is one of the most serious disasters with extensive and far-reaching impacts among the so many ecological and environmental problems. It is not only related to environmental problems, but also to political and economic issues. China is one of the most seriously desertified countries in the world and desertification has posed a threat to survival and development of the nation. According to previous studies, human activities are important reasons of desertification in China. In our study, based on data and examples, four main factors about impacts of human activities on desertification were analyzed: (1) change of water system of northwestern China by improper use of water, and the damage to the fragile ecological balance; (2) destroy of vegetation in northwestern China by improper reclamation, grazing, mining and logging; (3) change of soil structure by overuse of land and excessive developing of industry and agriculture; (4) warming caused by continuous emission of greenhouse gases in human production and living. Based on these analysis, macroeconomic countermeasures were put forward for improvement and prevention of desertification in northwestern China.
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Received: 06 June 2009
Published: 20 March 2010
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2010, Vol. 30 
