摘要
以三门峡库区为研究对象,依据1980年、1990年、2000年、2010年4个时期的卫星遥感影像,采用最大似然法进行监督分类,并运用人机交互解译和野外检验方法获取三门峡库区的水体、滩地、沼泽等土地利用数据;利用地理信息系统空间分析和统计功能,研究了1980—2010年三门峡库区的土地利用动态变化情况。结果表明:30 a间城镇用地、农村用地明显增加;水体、滩地、草地均有不同程度减少,分别减少18.64%、62.6%、27.6%,林地面积基本持平;滩地主要转化为水体和耕地,草地主要转化为耕地和林地。土地变化格局的主要驱动力是人口增长、城市化与经济的发展、气候环境的变化等。
Based on the periods of 1980, 1990, 2000 and 2010 Landsat-TM images,taking 5anmcnxia Reservoir as a study case and by adopting the maximum likelihood method to carry through the supervised classification, it got landuse date which included water-body, beach land and mash and so on with assistance of man-machine interactive and field checkout methods. By using spatial analysis and statistic function of GIS, the dynam- ic change of land-use during the period 1980 to 2010 of Sanmenxia Reservoir was researched. The results show that during the past 30 years, the area of urban land and rural land increases distinctly and the water body decreases by 23.82%. The areas of water body,beach land and grassland are decreased by 18.64% ,62.6% and 27.6% respectively. The area of forest land essentially unchanged. Beach land mainly transformed to water body and farmland, grassland mainly transformed to farmland and forest land. The dominant driving force ibr land change pattern is a combined function ,which includes population increase, urbanization, economic development and climatic and environmental changes.
出处
《人民黄河》
CAS
北大核心
2014年第4期82-85,共4页
Yellow River
基金
国家自然科学基金资助项目(51179207
51209231)
