作　　者： ; ; ; ;

机构地区： 中国科学院地理科学与资源研究所

出　　处： 《地理科学》 2013年第5期588-593,共6页

摘　　要： 利用SPOTNDVI数据，对环渤海地区2000、2004、2008年耕地复种指数进行遥感反演。并利用地理探测器方法对影响复种指数动态变化的因素进行定量探测。结果表明：①从南至北，复种指数从平原地区最高280％降至北部山区最低70％，呈现出一定南北递减的纬度地带性。丘陵、高原、山区的复种指数比同一纬度地区偏低40％～60％，表现出一定垂直地带性。②2000-2004年，平原传统农区的复种指数上升，高原、山区、丘陵地区局部出现下降；2004～2008年，下降区域的复种指数反弹上升，平原农区保持平稳。③粮食单产水平是影响复种指数动态变化的主要因素，人均耕地面积、农村劳动力转移程度、农业生产条件、农业现代化水平、区位条件等因素等对其变化起着一定影响。 Using SPOTNDVI data, the multiple cropping indexes were inversed by remote sensing in 2000, 2004 and 2008 around Bohai in China. Meanwhile, the influencing factors for the changes of the multiple cropping indexes were detected by geographical detection method. The results showed： 1） The Spatial differences of the multiple cropping index were significant. The latitude zonal laws were obvious for the multiple cropping index spatial distribution, which was changed from 280% in the south plain to 70% in the north mountainous region. It was lower to 40%-50% in hills and the plateau mountain region than in the plain of the same latitude, showed a certain vertical zones law. The multiple cropping index was higher than 150% in traditional agricultural areas of plains, including the southern of Hebei Province, the southwest and north of Shandong Province. The lower value regions of the multiple cropping index were located at Shandong Hilly Areas, Bashang Plateau in Hebei Province and Changbai Mountains in Liaoning Province. 2） The regional differences of the dynamic change for the multiple cropping index were obvious in 2000-2008. The multiple cropping index was increased in the traditional agricultural areas of the plains. The regions where the dynamic degree was more than 10% were located in the southwest, northwest and east in Shandong Province, Haihe river plain in Hebei Province. On the contrary, the negative value regions of the dynamic degree were located in the Hilly Areas of Shandong Province, Bashang Plateau of Hebei Province and the Liaohe River plain in Liaoning Province in 2000-2004. There were rebound in declined areas, and remained stable in increase areas in 2004-2008.3） The level of grain production was an important factor affecting changes of the multiple cropping indexes. There were many factors affecting changes of the multiple cropping index, including the per capita cultivated land area, transfer degree for rural labor force, the basic conditions of agricultural production, the level of agric

关 键 词： 复种指数 遥感反演 时空变化 影响因素

领　　域： [自动化与计算机技术] [自动化与计算机技术]