摘要
根据1989年和2000年2期TM影像，利用遥感和景观生态的研究方法，对准噶尔盆地南缘绿洲景观格局的变化进行了分析。结果表明：研究区域1989～2000年的植被覆盖面积在总面积中所占比例下降了4．90％。时间动态度分析表明，农田〉低覆盖度植被〉水域〉高覆盖度植被〉流动沙丘〉戈壁滩〉中覆盖度，其中农田、水域、高覆盖度植被、低覆盖度植被和流动沙丘都有不同程度的增加，中覆盖度植被和戈壁滩的面积明显减少；绿洲景观破碎化程度在增加；人工绿洲景观趋于完整连片；随着人类干预时间的延长，绿洲景观的类型趋于简单。
Abstract Based on the TM images in 1989 and 2000, the change of landscape pattern of oasis in the southern margin of Junggar Basin was analyzed by the research methods of remote sensing and landscape ecology. The results showed that the proportion of vegetation coverage area to total area in the research area reduced 4.90% in 1989 - 2000. The analysis on time dynamic degree showed that farmland 〉 vegetation with low coverage 〉 water area 〉 vegetation with high coverage 〉 wandering dune 〉 Gobi 〉 vegetation with moderate coverage, in which farmland, water area, vegetations with high and low coverage, and wandering dune increased to different degrees, and the areas of vegetation with moderate coverage and Gobi reduced obviously. The fragmentation degree of oasis landscape was increasing and the artificial oasis landscape inclined to integrate and connect into big area. Along with the extending of human intervening time, the type of oasis landscape inclined to be simple.
出处
《安徽农业科学》
CAS
北大核心
2008年第1期265-267,共3页
Journal of Anhui Agricultural Sciences
基金
973重大基础研究前期研究专项(2004CCA02800)
关键词
准噶尔盆地
绿洲
植被覆盖度
景观格局
Junggar Basin
Oasis
Vegetation coverage
Landscape pattern
