佛山市禅城区景观格局粒度效应分析Ⅰ——景观制图与景观指数选取

以佛山市禅城区作为研究对象,在其土地利用分类基础上,利用GIS软件、景观格局分析软件(Fragrats3.3)和Excel软件,从景观水平和斑块类型水平上分析了粒度变化对禅城区、老城区和南庄镇3类景观格局的影响,并对比分析南庄镇和老城区在不同粒度下的尺度效应,寻找不同景观的适宜分析粒度,从而为选择适宜粒度进行景观指数的计算和尺度转换提供理论依据。结果表明,景观指数具有粒度效应:在景观水平上,禅城区的适宜尺度为5、20～40和120～140 m区间,老城区的适宜尺度为10、20～40和120～140 m区间,南庄镇的适宜粒度为5、70、110 m;在斑块类型水平上,禅城区和老城区的适宜粒度均为10或120～140 m区间,南庄镇的适宜粒度大致是粒度为10、20或120～150 m区间。

An analysis of the spatial grain effects on the landscape patterns in Chancheng district of Foshan city~The part o{ landscape mapping and landscape indices selected

Taking Chancheng district as the research object and the classifications of the land in this district,we analyzed and compared the spatial grain effects on the landscape patterns in the old urban area,Chancheng district and Nanzhuang town of Foshan city from the perspectives of the landscape-level and the class-level to provide a theoretical foundation for the landscape index calculation and the scale shifts to select suitable grain size.It is indicated that the landscape index has grain effects.Seen from the landscape-level,the appropriate spatial resolutions for the old urban area,Chancheng district are 5,20～40,120～140 m,old urban area are 10,20～40,120～140 m,Nanzhuang town are 5 are 70,110 m respectively while from the class-level,the corresponding numbers are 10 or 120～140 m,for both the old urban area and Chancheng district and 10,20 or 120~150 for Nanzhuang town.