摘要
为更好地研究土地利用格局与多个地形因子综合的关系,该文基于地形位指数和坡向转换指数,提出包含高程、坡度和坡向因子的地形综合指数,应用GIS分析了1980-2015年太行山低山丘陵区土地利用格局在地形综合指数分级上的变化趋势。结果表明:地形综合指数能更有效地反映区域地形差异;在地形综合指数不同分级区间,土地利用类型分布具有明显的规律性,在低级别区间(1-15),耕地、水域和建设用地分布占优势地位,在中级别区间(16-30),林地和草地分布占优势地位,在高级别区间(31-50),林地的分布占绝对优势。1980-2015年土地利用变化类型中稳定型在各级别区间分布比较稳定,1-15区间呈略微劣势分布,在16-44、49-50区间呈略微优势分布,其他变化类型在低级别区间(1-15)和最高级别区间(41-50)分布比例较大,在其他级别分布比例较小。
Land use/cover change(LUCC)gains more and more attention because of its great impacts on climate,hydrological processes,biodiversity and ecological processes.The relationship between terrain variables and land use has become an important part of land use/cover change.This study established a terrain composite index based on the terrain niche index and transformation of aspect,and analyzed its application in terrain gradient effect analysis of land use change in Taihang hilly areas from 1980 to 2015.The main results were summarized as follows.First,the spatial distribution of land use types had close relationships with terrain gradient.Secondly,the cropland,cultivated land and water body were distributed on the area of low terrain gradient;the grassland was mainly distributed on the area of medium terrain gradient,while forest land mainly covered the medium and high terrain gradient.According to the types of land use change,it was found that the primary type was the stable type,which accounted for 84.17%of the whole study area.Therefore,terrain factors,including elevation,slope and aspect strongly influenced the structure and spatial distribution of land use types in hilly areas.This study has provided some alternatives for the dynamic optimal allocation of land use and the construction of eco-environment in Taihang hilly areas.
作者
武爱彬
秦彦杰
赵艳霞
WU Ai-bin;QIN Yan-jie;ZHAO Yan-xia(Hebei Engineering Research Center for Geographic Information Application,Institute of Geographical Sciences,Hebei Academy of Sciences,Shijiazhuang 050011,China)
出处
《地理与地理信息科学》
CSCD
北大核心
2018年第6期93-99,118,共8页
Geography and Geo-Information Science
基金
河北省社会科学基金项目(HB16YJ064)
关键词
地形综合指数
地形位
坡向转换指数
分级
土地利用
terrain composite index
terrain niche index
transformation of aspect
classification
land use
