| 陈雅琳,常学礼,崔步礼.库布齐沙漠典型地区沙漠化动态分析——以展旦召苏木为例[J].干旱地区农业研究,2007,(4):36~41 |
| 库布齐沙漠典型地区沙漠化动态分析——以展旦召苏木为例 |
| Analysis on desertification dynamics in Kubuqi Dersert ——Take Zhandanzhao for example |
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| DOI：10.7606/j.issn.1000-7601.2007.04.07 |
| 中文关键词: 沙漠化土地 动态变化 3S技术 库布齐沙漠 |
| 英文关键词:desertified land dynamic change 3S techniques Kubuqi desert |
| 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) |
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| 中文摘要: |
| 以达拉特旗中部的展旦召苏木为研究区域，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年来沙漠化动态变化数据，分析了展旦召地区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 a来，沙漠化土地处于逆转—发展—逆转的过程中；半固定沙丘面积变幅最大，而流动沙丘面积变幅最小；就斑块数量而言，近20 a来，沙漠化土地斑块数量大体呈现增长的趋势，其中，流动沙丘的斑块数量呈现减少—增加—减少的变化趋势，而其余类型的沙漠化土地斑块数量均有不同程度的增加。在沙漠化发展变化的原因分析中，定量描述了年平均气温、年平均风速、年平均降水量、人口、牲畜数量等因子对沙漠化的影响，在各种影响因子中，人口、牲畜量和年均风速对沙漠化的影响最为显著。 |
| 英文摘要: |
| The study area——Zhandanzhao is located in the center of Dalate Baner in Inner Mongolia. Based on 3S techniques and combined with the ground review, the Land-sat TM images of 1987, 1995, 2000 and 2003 were interpreted, and the changes of sandland were analyzed by using the database of desertification dynamics 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 reverse-develop-reverse. The amplitude contraction of semi-fixed dune increased, but the amplitude contraction of mobile dune reduced. On the patch number, the trend of desertified land patch number is growing. The number of mobile dune was in the situation of decrease-increase-decrease. The other desertified lands patch number is increasing in varying degrees. The developing of desertification is the result of natural and artificial factors. The quantitative description of the impact of the annual average temperature, annual average wind speed, annual average precipitation, population and the number of livestock on desertification was made in the paper. In all factors, population, livestock and annual average wind speed have the most obvious impact. |
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