基于分形的宁安市土地利用变化及驱动力研究

发布时间：2018-05-19 04:08

本文选题：土地利用分形特征 + 宁安市　；参考：《水土保持研究》2016年02期

【摘要】：以黑龙江省宁安市为研究区,以1991—2010年3期遥感影像为数据源,基于分形理论,在RS、GIS技术支持下,运用空间统计分析和综合因素分析法分析研究区土地利用变化特征及其驱动力,以期揭示土地利用变化规律及其影响因素。结果表明:(1)1991—2010年研究区的土地利用发生了普遍的变化,耕地和建设用地的面积逐年增加,林地和草地的面积逐年减少,水域和其他用地的面积保持相对稳定。耕地面积的增长主要来源于林地;建设用地主要增量来源于耕地,林地转移方向主要为耕地,其增量主要来源于草地。草地面积逐年减少,其主要转移方向是耕地和林地,其增量主要来源于林地。(2)1991—2010年宁安市整体的分维数值处于上升趋势,稳定性是下降态势,水域的空间结构最复杂,耕地和建设用地的空间结构较为简单。水域结构复杂,稳定性强;耕地和林地结构先复杂后趋向稳定;草地和建设用地结构越来越复杂,趋于不稳定;其他用地结构简单,趋向稳定。(3)引起研究区土地利用变化的主要自然因素是灾害与气候特征,社会经济发展、人口因素、居民生活水平和技术进步是研究区土地利用变化的主要人为驱动力,人为因素的驱动力度在逐年加强。
[Abstract]:Taking Ningan City of Heilongjiang Province as the research area, taking the three issues of remote sensing images from 1991 to 2010 as the data source and based on fractal theory, with the support of RSGIs technology, Spatial statistical analysis and comprehensive factor analysis were used to analyze the characteristics and driving forces of land use change in the study area in order to reveal the law of land use change and its influencing factors. The results showed that the land use of the study area in the study area from 1991 to 2010 had a general change, the area of cultivated land and construction land increased year by year, the area of forest land and grassland decreased year by year, and the area of water area and other land use remained relatively stable. The increase of cultivated land area mainly comes from woodland, the main increment of construction land comes from cultivated land, the direction of forest land transfer is cultivated land, and its increment mainly comes from grassland. The grassland area is decreasing year by year, and its main transfer direction is cultivated land and woodland. Its increment mainly comes from the increasing trend of the fractal dimension of the whole city of Ningan from 1991 to 2010. The stability is decreasing, and the spatial structure of the water area is the most complex. The spatial structure of cultivated land and construction land is relatively simple. The structure of water area is complex and stable; the structure of cultivated land and forest land tends to be stable first; the structure of grassland and construction land becomes more and more complex and unstable; and the structure of other land use is simple. The main natural factors leading to land use change in the study area are disaster and climate characteristics, social and economic development, population factors, living standards of residents and technological progress, which are the main anthropogenic driving forces of land use change in the study area. The driving force of human factors is increasing year by year.
【作者单位】：东北农业大学资源与环境学院;东北大学土地管理研究所;
【基金】：东北农业大学博士启动资金“基于GIS的黑龙江省农业气候资源时空变异研究”(2012RCB67)
【分类号】：F301.2

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