摘要
无人机遥感技术由于自身的优越性正被逐步推广应用。为探讨一种高效、快速对村庄土地利用变化进行监测的方法,从而获取村庄土地利用变化信息,本试验以高分辨率无人机所获取的正射影像为基础,通过对影像进行傅立叶变换提取变化信息,对比分析了云南省寻甸县泽铁村2015―2016年土地利用变化。结果表明:2015年,泽铁村农村宅基地分布零散,存在大量闲置、废旧房屋,基础设施建设落后,农村道路、沟渠分布不合理等造成严重的土地资源浪费;2016年,泽铁村建设用地显著增加,宅基地分布更加集中,闲置、废旧建筑已拆除,道路、坑塘、沟渠修建更加完善、布局更加科学,显著改善了"空心村"的现象。基于傅里叶变换对低空正射影像进行土地利用信息提取,能够快速有效地对村庄土地利用动态进行监测。
UAV remote sensing technology is being gradually applied because of its own superiority.In order to obtain the land use change information in village,one method was established based on the orthophoto images obtained by the high resolution UAV.Using the Fourier transform to extract the image information,the comparative analysis was conducted on Zetie Village,Xundian County,Yunnan Province,in 2015-2016.The results showed that in 2015,the rural homestead of Zetie Village was scattered;there were a lot of idle and waste houses;the infrastructure construction was backward,and the rural roads and ditches were irrational and so on.In 2016,the homestead significantly increased and its distribution was more concentrated;the idle and abandoned buildings had been demolished;the roads,pits and ditches were built more perfectly with more scientific layout,so the＂hollow village＂phenomenon was significantly improved.In conclusion,to extract the land use information through Fourier transform based on low-altitude orthoimage image could quickly and effectively monitor the land use dynamics of villages.
出处
《山东农业科学》
2017年第4期138-142,共5页
Shandong Agricultural Sciences
基金
国家科技支撑计划项目"城镇近郊区空心村整治关键技术研究与示范"(2014BAL01B04)
关键词
低空正射影像
土地利用变化
村庄
动态监测
无人机遥感技术
Low-altitude orthophoto
Land use change
Village
Dynamic monitoring
UAV remote sensing technology
