内蒙古太仆寺旗土地利用景观格局与空间动态特征分析

以位于我国北方农牧交错带的太仆寺旗为研究区,基于1995、2000和2008年3期土地利用现状图并结合太仆寺旗地形图,借助GIS提取太仆寺旗土地利用空间信息,运用景观生态学原理和定量分析方法,对太仆寺旗13a来土地利用数量变化、景观格局和空间动态变化进行分析.结果表明：数量上,林地面积增加,耕地、草地和未利用土地面积减少;景观格局上,耕地、草地和林地形状趋于复杂和不规则;空间变化上,土地利用变化主要表现为大量耕地转变为林地以及耕地、草地和未利用土地之间的相互转变;空间分布上,随着海拔、坡度和坡向的变化,各种土地利用类型的呈规律性分布.相关政策是土地利用变化的主要驱动因素之一.

LANDSCAPE PATTERN AND SPATIAL FEATURE OF LAND USE IN TAIPS COUNTY IN INNER MOGOLIA

Land-use map in 1995,2000,2008,and topographic maps were used to study landscape pattern and dynamic changes in Taips County as a typical case of Northern Farming-Grazing Transitional Belt in North China.Landscape ecology and quantitative analysis were used together with GIS to analyze changes in landscape pattern and spatial-temporal land use from 1995 to 2008.It was found that total area of forest has expanded accompanied by a reduction in farmland,grassland and wasteland.Landscape pattern analysis revealed spatial irregularity of farmland,grassland and forestland patches.Major features of land use dynamics were found to be a switch from farmland to forestland,mutual changes among farmland,grassland forestland and wasteland.Spatial distribution of different land areas presented a regularity following different altitudes,slope angles and orientations.Relevant government policies are the major external driving force for changes in land use,calling for more attention to socio-economic factors affecting land use changes.