| 内蒙古达拉特旗高头窑镇土地利用变化及其对土地沙化的影响 |
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| 引用本文： | 陈雅琳,常学礼,崔步礼.内蒙古达拉特旗高头窑镇土地利用变化及其对土地沙化的影响[J].干旱区地理,2007,30(5):747-752. |
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| 作者姓名： | 陈雅琳 常学礼 崔步礼 |
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| 作者单位： | 鲁东大学地理与资源管理学院,山东,烟台,264025 |
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| 基金项目： | 国家“十五”攻关项目(2002BA517A-09-05)，鲁东大学校基金(YD05008)，鲁东大学研究生创新基金(Ycx0607)共同资助 |
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| 摘 要： | 以达拉特旗西南部的高头窑镇为研究区域,以达拉特旗1987、1995、2000和2003年四期遥感影像为信息源,在3S技术支持下,对遥感影像进行解译,获得1987-2003年来四个时期的沙漠化动态变化数据,分析了高头窑镇20世纪80年代中期到21世纪初的沙漠化变化情况。结果表明:该地区近20年来,沙漠化土地处于发展-发展-逆转的过程中。研究区是典型的荒漠草原区,草原在各土地利用类型中始终占有绝对优势,农田、林地和高盖度草原的面积变化较大,各种土地利用类型之间的转化主要表现为各种沙丘类型之间的转化、各种草原类型之间的转化和草原与固定沙丘之间的转化。1987-2000年期间,草原和林地的退化是导致沙漠化严重发展的主要原因。2000-2003年间,土地类型之间的转化表现为固定沙丘、半固定沙丘和林地向草原的转化,这种转化有利于沙漠化的逆转。可见,在高头窑地区,草原的退化是导致沙漠化的主要原因,因此,在沙漠化的治理方面,应该合理利用草原,防止过度放牧,大力倡导退林还草。
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| 关 键 词： | 土地利用 动态变化 沙漠化 高头窑镇 |
| 文章编号： | 1000-6060(2007)05-0747-06 |
| 收稿时间： | 2006-10-12 |
| 修稿时间： | 2007-01-25 |
Effect of land use change on sandy desertification in Gaotouyao town |
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| CHEN Ya-Lin,CHANG Xue-li,CUI Bu-li.Effect of land use change on sandy desertification in Gaotouyao town[J].Arid Land Geography,2007,30(5):747-752. |
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| Authors: | CHEN Ya-Lin CHANG Xue-li CUI Bu-li |
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| Institution: | College of geography and resource management, Ludong University, Yantai 264025, Shandong, China |
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| Abstract: | The study area-Gaotouyao town located in the southwest of Dalate county.Based on the RS,GIS and GPS techniques and combined with the ground review,the Land-sat TM images of 1987,1995,2000 and 2003 were interpreted. The changes of sand land were analyzed by using the database of desertification dynamics variation from 1987 to 2003.RS and GIS softwares,such as Erdas 8.6,Arcview 3.3 and Arcinfo 7.1 were used as interpretation tools.The results showed that: in the past nearly 20 years,the desertified lands were in the situation of developing-developing-reverse.Study area is a typical desert grassland area,in which grassland always occupies absolute superiority among all kinds of land use.The area of cropland,woodland and grassland with high coverage degree has great changes in various types of land.The conversions are mainly manifested in the various types of dunes,grassland and between grassland and dunes.The degradation of grasslands and woodlands is the key reason leading to serious desertification from 1987 to 2000.The conversions of fixed dunes,semi-fixed dunes and woodland transforming to grassland are the main land changes in different types of land use from 2000 to 2003.This transformation is in favor of the reversion of desertification.Clearly,the degradation of grassland is the main cause of desertification,and it should be significant to use grassland rationally,prevent overgrazing and realize returning farmland to forest in Kubuqi Desert. |
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| Keywords: | land use dynamic change desertification Kubuqi desert |
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