摘要
为了研究区域地表破碎程度,选取地表起伏度、地表切割密度、地表切割深度3个单因素指标来综合量化地表破碎指数。以数字地面高程模型为数据基础,以地理信息系统为技术平台,对各单因素指标的计算和提取进行了研究;提出了基于粗集和模糊集理论的地表破碎程度综合指标的单要素权重确定方法,建立了综合指标地表破碎指数的计算公式。并以山东省为例进行了指数计算,得到了山东省地表破碎程度图。计算结果表明:山东省地表破碎指数存在明显的地域分异规律,它能够客观、准确地反应出山东省地表破碎程度分布情况,为公路区划、土地规划等的研究提供了依据。
Three factors,i.e.surface amplitude,incision density and incision depth are used to quantify the broken index of surface in order to study broken degree of surface.Based on the DEM,the calculation and extraction of single elements are finished by using GIS.Based on fuzzy clustering and rough set theory,a method is put forward to determine the influence coefficients of single elements in the composite element,and the formula of composite elements-the broken index of surface is elaboratcd to finish the calculation in Shandong Province.The calculation results indicate that a highly spatial heterogeneity exists in the broken index of surface in Shandong Province and it objectively shows the distribution of the broken degree of surface in Shandong Province and provide a basis for the zoning of highway and land division.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第11期126-130,共5页
Journal of Chongqing University
基金
西部交通建设科技项目(2009318000102)
中央高校基本科研业务费专项资金资助项目(CHD2011ZD021)
