摘要
以3个时期(1995、2000和2007年)Landsat TM影像为主要数据源,借助于ArcGIS对DEM派生的地形因子和不同时期的土地利用类型进行叠加分析,得到不同地形因子的土地利用类型分布情况,进而定量分析土地利用类型的变化与地形因子的关系。结果表明:耕地和林地面积之和所占的比例最大,3个时期分别为81.63%、82.07%和79.35%;1995—2007年间,未利用地和草地面积持续减少,居民工矿用地面积持续增加;耕地在平坡、第一高程带和无坡向区域所占的面积比例最大,平坡和无坡向是其优势区域,面积百分比均大于60%,且2000年的面积比例最大,2007年的最小;林地在不同海拔和坡度都有分布,半阳坡和半阴坡为其优势区域,2007年的面积比例最大,1995年的最小;水域、居民工矿用地和未利用地受坡向的影响较小,但随着高程和坡度的增加面积减小。
The information about spatial distribution of land-use types in Harbin was obtained through overlay analysis of the terrain factors derived from DEM and the land use types in different periods based on ArcGIS by using the remote sensing images of 1995,2000 and 2007 as the main data source.The relationship between land use types and terrain factors was quantitatively analysed.Results showed that the proportion of total area of farmland and forest land was the highest,which were 81.63%,82.07% and 79.35% for 1995,2000 and 2007 respectively.The area of non-used land and grassland gradually decreased,but the residential land gradually increased.The area of farmland had the highest proportions in flat land and the region at the first elevation level or without slope aspect,and the flat land and the region without slope aspect were the dominant distribution regions of farmland,in which the proportions of farmland area were both greater than 60% and the maximum proportion was in 2000 and the minimum in 2007.Forest land was distributed at different elevations and slope gradients,half-shaded slope and half-sunny slope were its dominant regions,and the maximum proportion was in 2007 and the minimum in 1995.Water area,residential land and non-used land were little influenced by slope aspect,but the distribution area decreased with increasing elevation and slope gradient.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2010年第12期84-87,共4页
Journal of Northeast Forestry University
基金
黑龙江省重大科技攻关项目(GA06B302)
