| 王雪军,杨建新,孙玉军.晋陕蒙接壤地区沙地空间分布及其变化研究[J].干旱地区农业研究,2003,(1):98~101 |
| 晋陕蒙接壤地区沙地空间分布及其变化研究 |
| Dynamic spatial changes of sand lands in the adjacent area of Shanxi，Shaanxi and Inner Mongolia |
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| DOI：10.7606/j.issn.1000-7601.2003.01.23 |
| 中文关键词: 土地利用 遥感 空间分布 沙地 |
| 英文关键词:land use TM image remote sensing sand land |
| 基金项目:中国科学院知识创新项目(KZCX2-310-01-04) |
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| 中文摘要: |
| 利用20世纪80年代中后期与2000年晋陕蒙接壤地区两期TM遥感影像,分析了近15a来该地区沙地空间分布与动态变化。结果显示,2000年末,晋陕蒙接壤地区沙地总面积为648299hm2。在近15a中,有147671hm2沙地分别变成了其它土地利用类型,又有40715hm2的其它土地利用类型转化为沙地,沙地面积共减少106956hm2。主要表现为草地与沙地之间的变化。该地区退耕还林还牧、治沙防沙、"三北"防护林建设等工程对沙地空间分布及变化具有重要的驱动作用。 |
| 英文摘要: |
| Based on the remote sensing TM images during the middle of 1980s and the year 2000, the variations of spatial distribution of sand lands in the a djacent areas of Shanxi, Shaanxi and Inner Mongolin were analyzed. The results s howed that total area of sand lands 648 299 hm2 in 2000. During the last 15 y ears, there was 147 671 hm2 of sand lands being transformed into other types of land use, and there was 40 715 hm2 of other lands being transformed in t o sand lands. Therefore, the net decrease of sand lands was 106 956 hm2. Th e most dominant type of land transformation was that between the grasslands an d the sand lands. The paper indicates that anthropologic activities and implementation policies of like reusing sloping fields for plantation or past ure, sand control projects and shelterbelt system construction in "three North " region are the main driving forces for the changes and distribution of sand l ands in the given area. |
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