Mapping and monitoring of land use changes in post-Soviet western Ukraine using remote sensing data
Mapping and monitoring of land use changes in post-Soviet western Ukraine using remote sensing data
复制标题
DOI：
10.1016/j.apgeog.2014.08.003
复制
发表时间：
2014-12
影响因子：
4.9
通讯作者：
Jan Stefanski;Oleh Chaskovskyy;B. Waske
中科院分区：
文献类型：
--
作者：
Jan Stefanski;Oleh Chaskovskyy;B. Waske
在世界许多地区扩大和加强农业的同时，其他地区的土地使用强度下降，农田被遗弃。1991年苏联解体后，东欧经历了农业土地利用的广泛变化，然而，这些变化的速度和模式仍然没有得到很好的理解。我们的目标是绘制和分析土地管理制度的变化，包括大规模的农田，小规模的农田，和废弃的农田。监测土地管理制度是更好地了解土地使用强度变化的时间和空间格局的一个有希望的途径。对于映射和变化检测，我们使用了基于对象的方法，使用超像素分割来描绘对象和随机森林分类器。我们采用这种方法来Landsat和ERS SAR数据的年份为1986年，1993年，1999年，2006年和2010年，估计在乌克兰西部的这段时间内的变化轨迹。第一个时期是1990年代，其特点是后社会主义过渡进程，包括农田废弃和基本自给农业。后来，全球粮食价格引发了再耕种进程和工业化、大规模农业的重现，导致人们对该地区的兴趣日益增加。
While agriculture is expanded and intensified in many parts of the world, decreases in land use intensity and farmland abandonment take place in other parts. Eastern Europe experienced widespread changes of agricultural land use after the collapse of the Soviet Union in 1991, however, rates and patterns of these changes are still not well understood. Our objective was to map and analyze changes of land management regimes, including large-scale cropland, small-scale cropland, and abandoned farmland. Monitoring land management regimes is a promising avenue to better understand the temporal and spatial patterns of land use intensity changes. For mapping and change detection, we used an object-based approach with Superpixel segmentation for delineating objects and a Random Forest classifier. We applied this approach to Landsat and ERS SAR data for the years 1986, 1993, 1999, 2006, and 2010 to estimate change trajectories for this time period in western Ukraine. The first period during the 1990s was characterized by post-socialist transition processes including farmland abandonment and substantial subsistence agriculture. Later on, recultivation processes and the recurrence of industrial, large-scale farming were triggered by global food prices that have led to a growing interest in this region.