单 位：
合肥工业大学资源与环境工程学院;安徽省环境科学研究院
关键词：
景观破碎;空间分布特征;meff指数;多尺度报告单元;景观联通性;宁国市
摘 要：
采用CBC算法计算的m_(eff)指数,基于GIS技术,以宁国市、乡镇、1 km~2格网3种不同空间尺度区域为报告单元,选取城市建设区域、道路、农田、采矿区、采伐区、水体6类景观破碎因子组成景观破碎几何量度,研究宁国市景观破碎空间分布特征。结果表明,基于3种报告单元的m_(eff)值为0~422.92 km~2;宁国市景观破碎空间分布特征明显,破碎程度较重区域空间上呈"人"字形分布,城区破碎化水平最高,市域西北部、南部部分地区破碎程度相对较轻。
译 名：
Spatial Distribution Characteristics of Multi-scale Landscape Fragmentation Based on m_(eff) Index——Taking Ningguo City as an Example
作 者：
GU Xiao-yang;YU Gen;WANG Xiao-hui;School of Resources and Environmental Engineering,Hefei University of Technology;Research Academy of Environmental Sciences of Anhui;
关键词：
Landscape fragmentation;;Spatial distribution characteristic;;Multi-scale reporting unit;;Effective mesh size;;Landscape connectivity;;Ningguo City
摘 要：
The study investigated variation in m_(eff) measured by municipal counties,towns and grids of one square kilometer within Ningguo City.The fragmentation geometry was developed by overlaying highways,roads,urbanized areas,agricultural areas,mining areas,cutting areas and the waters. The m_(eff) index was calculated by cross-boundary connections( CBC) procedure. The m_(eff) values varied from 0 to 422. 92 km~2 based on three reporting units in Ningguo City,there were obvious characteristic of landscape fragmentation. Spatial distribution of the areas with low m_(eff) value shares a feature of herringbone. Degree of landscape fragmentation was the highest in urban area( 0. 26 km~2),with the lowest in northwest and south areas in Ningguo City. The m_(eff) values calculated by CBC procedure can satisfied the requirement of analyzing the spatial distribution characteristics of multi-scale landscape fragmentation.
