| 近40年来民勤绿洲空间变化研究 |
| |
| 引用本文： | 矫树春,颉耀文.近40年来民勤绿洲空间变化研究[J].干旱区资源与环境,2004(Z2). |
| |
| 作者姓名： | 矫树春 颉耀文 |
| |
| 作者单位： | 西部环境教育部重点实验室(兰州大学) 甘肃兰州730000
(矫树春)，西部环境教育部重点实验室(兰州大学) 甘肃兰州730000(颉耀文) |
| |
| 基金项目： | 国家重点基础研究发展规划 ( 973 )项目”中国北方沙漠化过程及其防治研究”(G2 0 0 0 0 4870 1) |
| |
| 摘 要： | 绿洲是一种独特的地理景观 ,如何合理、协调、持续地利用和开发绿洲是当今干旱、半干旱地区一项具有重大理论与现实意义的研究课题。以遥感及GIS为工具 ,借助地学信息图谱技术 ,以不同时相、不同尺度的数据源为基础 ,编制出 1 960～ 2 0 0 1年民勤绿洲分布图 6幅 ,在GIS中通过空间分析获得民勤绿洲空间变化图 5幅。研究发现民勤绿洲的空间变化可分为三个阶段 :1 960～ 1 973年绿洲扩展 ;1 973～ 1 994年绿洲稳定 ;1 994～ 2 0 0 1年绿洲迁移和不稳定时期。民勤绿洲演变是上游来水量的逐年减少、地下水的超量开采、人口的增加以及政策因素综合作用的结果。
|
| 关 键 词： | 民勤绿洲 遥感和GIS 绿洲变化 |
Analysis of Spatial Change of Minqin Oasis Near About 40 Years |
| |
| JIAO Shu-chun,XIE Yao-wen.Analysis of Spatial Change of Minqin Oasis Near About 40 Years[J].Journal of Arid Land Resources and Environment,2004(Z2). |
| |
| Authors: | JIAO Shu-chun XIE Yao-wen |
| |
| Abstract: | The oasis is a particular landscape, developing oasis rationally and continually being research content have important academic and practical significance in arid-semiarid area. Six distributing maps of Minqin Oasis from 1960 to 2001 is made by RS、 GIS, technique of geo-information and the data sources of different time and scale. Five spatial-changing-maps is made by spatial analysis in GIS.Evolvement process of the oasis as follow: the oasis was in the state of expanding from 1960 to 1973:the oasis was in the state of stabilization in 1974-1993; the oasis was in the state of transferring and instability from 1994 to 2001. The evolvement of Minqin Oasis is in the case of reducing of water from upriver and excess exploitationof groundwater and the scope enlarging of tradition agriculture. |
| |
| Keywords: | Minqin Oasis RS and GIS spatial change |
| 本文献已被 CNKI 等数据库收录！ |
