| 基于遥感和GIS的干旱区绿洲景观破碎化分析--以金塔绿洲为例 |
| |
| 引用本文： | 郭明,马明国,肖笃宁,赵善伦.基于遥感和GIS的干旱区绿洲景观破碎化分析--以金塔绿洲为例[J].中国沙漠,2004,24(2):201-206. |
| |
| 作者姓名： | 郭明 马明国 肖笃宁 赵善伦 |
| |
| 作者单位： | 1. 山东师范大学人口·资源与环境学院,山东,济南,250014
2. 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000 |
| |
| 基金项目： | 国家自然科学基金重大研究计划项目(90102004)资助 |
| |
| 摘 要： | 以2个时期的遥感图像所解译的土地利用数据为基本信息源，基于GIS工具，选用斑块密度、廊道密度、斑块破碎度、分离度和斑块面积变异系数5个指标对金塔绿洲的破碎化程度进行了分析。结果表明：(1)1990～2000年，金塔绿洲总体的景观破碎化程度轻微地降低。(2)从景观类型上看，基质的破碎化程度增强；水浇地面积增大，趋于集中分布，破碎化程度降低；城镇用地破碎度增加，分离度减小。这些变化与人类开发利用活动的程度和方式有关，体现了荒漠基质受人类影响而逐步形成的典型农业型绿洲的特点。
|
| 关 键 词： | 遥感 GIS 绿洲 景观破碎化 干旱区 景观生态学 分离度 斑块密度指数 |
| 文章编号： | 1000-694X(2004)02-0201-06 |
| 修稿时间： | 2003年1月13日 |
Study on Landscape Fragmentation of Arid Region Oasis Based on Remote Sensing and GIS--A Case Study of Jinta Oasis |
| |
| GUO Ming.Study on Landscape Fragmentation of Arid Region Oasis Based on Remote Sensing and GIS--A Case Study of Jinta Oasis[J].Journal of Desert Research,2004,24(2):201-206. |
| |
| Authors: | GUO Ming |
| |
| Abstract: | Based on Remote Sensing and GIS, this paper quantified the landscape fragmentation of Jinta oasis by using the patch density, corridor density, fragmentation, separation, patch size coefficient of variation and area standard deviation. From 1990 to 2000, the landscape fragmentation degree in Jinta Oasis descended slightly. In the landscape type level, the landscape fragmentation degree of the matrix (bare soil, bare rock and gravel land) increases, meanwhile, the area of the matrix decreases, which shows that the influence of human beings on matrix increases. The irrigated land area rises and the total number of patches decreases. So the distribution of irrigated land is more centralized and the fragmentation becomes lower. The area of city and town inhabitant land increases clearly. Its fragmentation increases and separation index decreases. The human activities have contributed to the changes of fragmentation degree in Jinta oasis. Dense corridor system is one of most extrusive characteristics of the arid region. The corridor density of the irrigated land, forest and resident area is maximal, showing that the effect of oasis corrriod on them is the most. The corridor density has relation with the landscape fragmentation. The pattern of Jinta oasis embodies the characteristic of typical agriculture oasis in Gobi and desert matrix influenced by human beings. |
| |
| Keywords: | Remote Sensing GIS arid regions Jinta oasis landscape fragmentation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
