Land Cover Change Characteristics of North-South Transect in Northeast Asia from 2001 to 2012

东北亚南北样带2001-2012年土地覆被变化分析(英文)

Northeast Asia is an area with relative concentrations of resources, a complex ecological environment pattern, and a marked human-land contrast relationship. This area has significance for analyzing land cover patterns and variations for regional sustainable development among the trans-boundary areas of China, Russia, and Mongolia. In this paper, the transect analysis research tool and transfer matrix method are used to capture the regional land cover change characteristics by using Moderate Resolution Imaging Spectroradiometer（MODIS） datasets recorded from 2001 to 2012.The spatial distribution results show that forests have increased dramatically, cropland increased marginally, and grassland and shrubs decreased totally. The inter-annual variation, results show a steady and slowly increasing trend for grassland and shrubs, dramatic fluctuation features with an increasing trend for forest land, and zigzag wave changing characteristic for cropland. The total land use dynamic degree （TLUDD）was steady, with an overall slightly increasing trend.

东北亚区域是一个资源相对集中,生态环境格局复杂,气候地带性多样,人地关系对比显著的区域。分析该区域的土地覆被格局与变化特征,对于促进全球气候变化在本区域的影响与响应研究,以及中、俄、蒙跨边境地区的区域可持续发展具有重要意义。本文以样带分析为研究手段,获取东北亚南北样带2001-2012年逐年的MODIS土地覆被数据集,建立土地覆被变化矩阵。从空间分布来看,12年间东北亚南北样带内林地大量增加,耕地少量增加,草地灌丛则大幅减少。从年际变化来看,草地灌丛的总变化量呈现总体稳定,缓步上升过程中有局部波动的特点;林地总变化量呈现出峰谷相间的起伏波动特点,但总体有上升趋势;耕地的总变化量有明显的锯齿壮起伏波动特征;整个样带区域的综合土地动态度总体稳定,有略微上涨趋势。