摘要
基于奇台县1980—2007年TM、ETM+和ALOS影像,选择类型水平和景观水平上的景观指数进行景观格局动态分析,从自然与人文方面分析土地景观格局动态变化原因.结果表明:27年间该区土地利用和景观格局发生显著变化,其中建设用地逐年增加,共增加16.23km2;耕地、林地、草地先增加后减少;水域和未利用地先减少后增加.类型水平上部分景观斑块密度较大且均有波动,草地、未利用地和林地的分维数较大且均有波动,凝聚度由高到低分别是未利用地、耕地、草地、林地、水域和建设用地.景观水平多样性指数呈现降低—升高—降低的态势,斑块密度指数和凝聚度先降低后升高,分维数指数则表现出升高—降低—升高的态势.人口增长与经济发展以及气温和降水的变化是导致景观格局发生变化的因素.
Based on the TM,ETM＋ and ALOS images of 1980-2007,the spatial and temporal dynamics of landscape pattern are analyzed by the class and landscape level landscape index,and the causes of landscape pattern dynamic change are analyzed from natural and human aspects.The results showed that the land use and landscape pattern changed distinctly during 1980-2007; In which,construction land increased year by year with the total increase of 16.23 km2; Cultivated land,forest land,meadow increased first and then decreased,water and unused land decreased first and then increased.Part of the landscape patch density is larger and fluctuated in class level,fractal dimension of grassland,unused land and woodland is larger and fluctuated.Condensation degree from high to low are unused land,arable land,grassland,woodland,water area and construction land.Landscape diversity index showed a trend of decreasing-increasing-decreasing,patch density index and cohesion decreased first and then increased,the fractal dimension index showed a trend of increasing-decreasing-increasing.Population growth and economic development as well as the temperature and precipitation changes resulted in the significant change of landscape pattern.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第6期74-79,共6页
Journal of Shaanxi Normal University：Natural Science Edition
基金
国家自然科学基金资助项目(41271159)
西安科技大学科研培育基金(201103)
西安科技大学博士启动金(2011QDJ036)
国家级大学生创新创业训练计划项目(201210704006)
关键词
奇台县
土地利用
景观格局
动态
Qitai county
land use
landscape pattern
dynamic
作者简介
郭斌,男,讲师,博士,主要从事资源环境遥感与GIS研究.E-mail：woshiguobinzi@163.com
