| Application of Remote Sensing and GIS Technology to the Study of Desertification of Arable Lands in North Shaanxi, China |
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| 作者姓名： | MushtakTalibJabbar HUGuangdao ZHANGZhenfei |
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| 作者单位： | [1]ChinaUniversityofGeosciences.31LumoRoad,Wuhan430074,China. [2]不详,Wuhan430074,China. |
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| 摘 要： | The policy of the Chinese government concerning the horizontal expansion of the cultivated land through the reclamation of desert soils result in a total increase of 665. 985 km^2 during the period 1987-1999 in North Shaanxi. This increase is less than the loss in arable land by urbanization. The accelerated rate of change in agricultural areas calls for more rapid surveys of urbanization and loss of arable land. Remote sensing has a number of advantages over ground-based methods for such surveys. The multi-scale concept of remote sensing data help us study the problem in four towns. Several maps were produced to analyze the situation of urban coverage in different times. The evaluation of the status, rate and risk of urbanization are based on an accepted average of urban increase as 2% of population growth per year.
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| 关 键 词： | GIS 地球信息系统 城市化 强制入口 可耕地 荒漠化 沙漠化 细微感觉 |
| 收稿时间： | 28 March 2004 |
Application of remote sensing and GIS technology to the study of desertification of arable lands in North Shaanxi,China |
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| MushtakTalibJabbar HUGuangdao ZHANGZhenfei.Application of Remote Sensing and GIS Technology to the Study of Desertification of Arable Lands in North Shaanxi, China[J].Geo-Spatial Information Science,2004,7(3):187-192. |
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| Authors: | Mushtak Talib Jabbar Hu Guangdao Zhang Zhenfei |
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| Institution: | Mushtak Talib Jabbar HU Guangdao ZHANG Zhenfei |
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| Abstract: | The policy of the Chinese government concerning the horizontal expansion of the cultivated land through the reclamation of desert soils result in a total increase of 665.985 km2 during the period 1987-1999 in North Shaanxi. This increase is less than the loss in arable land by urbanization. The accelerated rate of change in agricultural areas calls for more rapid surveys of urbanization and loss of arable land. Remote sensing has a number of advantages over ground-based methods for such surveys. The multi-scale concept of remote sensing data help us study the problem in four towns. Several maps were produced to analyze the situation of urban coverage in different times. The evaluation of the status, rate and risk of urbanization are based on an accepted average of urban increase as 2% of population growth per year. |
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| Keywords: | urbanization population pressure arable land desertification remote sensing GIS |
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