近期天山北坡经济带土地利用变化时空特征分析

土地利用 /土地覆盖变化是区域生态环境演化的一个重要因素。近年来 ,经济发展、人口增长和城镇化速度的加快 ,对天山北坡经济带内土地资源的利用方式产生了深远的影响。本文应用 RS和 GIS技术 ,对经济带 2 0 0 0年和 2 0 0 2年 Landsat TM卫星影像进行解析 ,分析经济带土地利用现状及土地利用动态变化特征 ,并探讨土地利用变化的驱动因素。结合野外调查验证 ,文章还指出该区域由于土地利用方式的变化所引起的生态环境问题 ,并提出了相应的对策建议

Recently Spatial-Temporal Landuse Changes in Northern Slope Economic Zone of Tianshan Mountains

Landuse/land cover change is an important factor in regional ecological environmental evolvement. The exploitation of resources, development of economy and society have resulted in a great change of landuse in northern slope economic zone of Tianshan mountains since the 2000a. Using the landsat TM satellite images of the years of 2000 and 2002, the paper analyzes the present situation and dynamic change of landuse in study area by the RS and GIS techniques. It shows that grassland and desert land are the main types of landuse in the economic zone, which areas occupied 76.0% of the whole area; the areas of cultivated land, woodland, water area and constructed land are relatively small, which occupied 14.40%, 4.94%, 3.06% and 1.16% of the area. The characteristic of landuse of the regions reflects the better natural and societal environments in the economic zone. Through the study, the paper also shows that the areas of cultivated land increased, grassland and desert land are greatly decreased and the areas of woodland and constructed land have a certainty increase, but the areas of water area has a small decrease. The paper also discussed the drive forces of the landuse change and pointed out that the change was mainly caused by social and economic factors. Combing with the results of investigation and the verification on the spot, the article also points out the ecological environmental problems resulted by landuse changes in northern slope economic zone of Tianshan mountains during the period of 2000-2002, and some suggestion are put forward to protect ecological environment.