| 论绿洲发展过程中绿洲-荒漠交错带圈层结构的缺失及绿洲防护方式的改变 |
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| 引用本文： | 贺凌云,海米提·依米提.论绿洲发展过程中绿洲-荒漠交错带圈层结构的缺失及绿洲防护方式的改变[J].干旱区资源与环境,2010(4). |
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| 作者姓名： | 贺凌云 海米提·依米提 |
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| 作者单位： | 石河子大学地理系;新疆大学资源与环境科学学院; |
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| 基金项目： | 石河子大学高层次人才启动项目(RCZX200693)资助 |
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| 摘 要： | 以1977-2002年的三期landsat遥感影像为基础,分析了新疆于田县两个新开发的小绿洲,发现在绿洲扩张过程中,绿洲-荒漠交错带面积缩减,由高覆盖度草地到中低覆盖度草地的圈层结构被破坏,出现了高草圈层几乎完全消失,或人工绿洲直接与荒漠相连的情况。交错带对绿洲的防护功能下降,与此同时,绿洲内部的防护林体系得到加强,在人工绿洲的发展过程中,绿洲由外围防护渐转向内部防护。
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| 关 键 词： | 绿洲 交错带 圈层结构 防护林 |
Lack and loss of oasis-desert ecotone layer structure during the process of oasis development and the change of oasis protection Way |
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| Institution: | 1.Geography department;Shihezi University;Shihezi 830023;Xinjiang;P.R.China;2.College of Resources and Environment Science;Xinjiang University;Urumqi 830046;P.R.China |
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| Abstract: | Based on three Landsat remote sensing images during 1977-2002,we analyzed two little oases of Yutian County which developed very quickly,found that company with the expansion of oasis,the oasis-desert ecotone area reduced,and the whole rounded structure of ecotone which consist of high,middle and low-coverage grassland was damaged,high coverage grassland almost completely disappeared,or the artificial oasis directly bordered with desert.The fence and protection of ecotone beyond oasis declined,at the same t... |
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| Keywords: | oasis ecotone layer structure shelter belt |
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