地理学报 ›› 2002, Vol. 57 ›› Issue (1): 19-27.doi: 10.11821/xb200201003

• 干旱区环境 • 上一篇    下一篇

塔里木盆地南缘绿洲土地覆盖变化

丁建丽,塔西甫拉提·特依拜,熊黑钢,海米提·依米提   

  1. 新疆大学资源与环境科学学院,乌鲁木齐 830046
  • 收稿日期:2001-08-01 修回日期:2001-11-01 出版日期:2002-01-25 发布日期:2002-01-25
  • 作者简介:丁建丽(1974- ), 男, 讲师。主要从事资源遥感与3S技术应用研究, 在国内外学术刊物上发表论文2篇, 合作出版著作2部。 E-mail:dingjianli@263.net; dingjianli@21cn.com
  • 基金资助:

    国家重点基础研究项目(G1999043508)

Oasis Land Cover Change in the Southern Edge of Tarim Basin

DING Jian-li,Tashpolat·Tiyip, XIONG Hei-gang,Hamit·Yimit   

  1. College of Resources and Environment Science, Xinjiang University, Urumqi 830046, China
  • Received:2001-08-01 Revised:2001-11-01 Online:2002-01-25 Published:2002-01-25
  • Supported by:

    The National Key Basic Research Project of China, No.G1999043508

摘要:

绿洲土地覆盖变化信息的定量提取在干旱区生态环境演变研究中具有重要价值,选择塔里木盆地南部特有的干旱地区和田绿洲于田县为研究区,首先对土地覆盖变化信息提取方法作了对比论述,并对利用卫星遥感数据的空间结构信息以提高分类精度,进而提高分类后比较法的总体精度进行了研究;最终利用该方法做出的系列图件,总结了该地区近10年来的土地覆盖类型变化,并与实地考察结果及有关资料结合,分析了该地区近年来的环境变化及其影响因素,其方法和结论对塔里木盆地南缘绿洲地区未来的环境可持续发展研究具有一定参考价值。

关键词: 土地覆盖, 动态变化, 空间结构信息

Abstract:

According to inquisitional result based on remote sensing technology, this paper narrates the regulations of Yutian oasis land cover dynamic change. Considering macroscopic research, 4 main land cover types are chosen, which are desert, oasis, ecotone and water body and they represent distinct characteristics of the local place. On the basis of field survey and statistical data, the paper uses PCI software to preprocess these data and the 2 satellite images (see Fig. 1). To improve overall post-classification precision, this study uses spatial structure information of satellite images to reclassify the result by using fuzzy optimum clustering firstly and gains a rather high classification precision which guarantees the need of analysis fully. Through analyzing these images resulting from post-classification comparation, the paper sums up the concrete quantificational dynamic distributed data of 4 main land types covering a span of 9 years and regulation of the local ecological environmental system. It finally points out that the trend of Yutian regional oasis desertification expansion are related to two important reasons, i.e., impact of natural environment and impact of human activities. In order to improve the local ecological environment, people in Yutian county should take measures suitable to local conditions to protect oases environment through shelterbelt construction, development of socio-economy and sustainable development.

Key words: land cover, dynamic change, spatial structure information