摘要
土地利用/覆盖变化(LUCC)是全球变化研究的重要核心问题之一,基于区域和地方尺度的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的价值,也是对全球变化研究的重要补充。选择干旱区典型绿洲新疆于田地区为研究靶区,利用2期不同时相的TM卫星影像,结合多年实地调查所获得的大量数据,根据当地实际情况,选择适宜的分类指标体系,利用遥感、全球定位系统以及地理信息系统技术(3S技术)对图像进行了综合技术处理,获得了较高精度的该区域绿洲LUCC不同类型分类精度统计以及土地利用/覆盖转换矩阵。在此基础上,对跨度近10年的于田绿洲LUCC时空变化格局进行了分析,提出了相应的生态环境改良措施,其方法和结论对塔里木盆地南缘绿洲地区生态环境改良及其可持续发展研究具有一定参考价值。
Land use/land cover change(LUCC) is one of the core issues in global change research, which plays an important role in the study of arid region ecology and environmental dynamics. Taking the typical oasis of Yutian County in southern Xinjiang as study area, and using 2 temporal TM images combined with field survey, the proper land use/land cover indices were chosen, according to the actual conditions. With the application of 3S techniques(remote sensing, GPS and GIS), 2 temporally different images were processed accurately, and rather high precision classification statistics and LUCC transform matrix were acquired. The spatial-temporal dynamic change pattern of Yutian oasis with a span of 10 years was analyzed, and some corresponding countermeasures to the ecological and environmental problems were put forward. The methodology and the conclusions of this study could afford some references to the improvement of ecological environment and the sustainable development at the southern fringe of Tarim basin.
出处
《生态学杂志》
CAS
CSCD
北大核心
2005年第11期1277-1282,共6页
Chinese Journal of Ecology
基金
国家自然科学基金项目(40261006)
中国科学院西部之光项目
中家博士后基金项目
自治区高校科研计划项目(XJEDU2004S03
XJEDU2004I06)
新疆大学院校联合资助项目
关键词
3S技术
土地覆盖
时空变化
3S technique, land cover, spatial-temporal change.