Ecological suitability evaluation for urban growth boundary in red soil hilly areas based on fuzzy theory

来源期刊:中南大学学报(英文版)2012年第5期

论文作者:焦胜 高青 魏春雨 刘贝 李晓东 曾光明 袁中兴 梁婕

文章页码:1364 - 1369

Key words:land ecological suitability evaluation; fuzzy theory; urban growth boundary (UGB); GIS; MATLAB

Abstract: The fuzziness exists in spatial distribution of geographic data of land suitability evaluation processes, which makes it difficult to quantify land boundaries by using traditional binary logic-based overlay model. Aiming at this limitation, an ecological suitability evaluation analysis model was presented based on fuzzy theory and a research on urban growth boundary (UGB) of the Great-Hexi Leading District (GHLD) of Changsha was conducted. With the support of GIS, RS and MATLAB, slope, elevation, vegetation, soil productivity, soil permeability, water body and land use are selected as the input of model according to the characteristic properties of soil and terrain in red soil hilly areas. The running result of this model indicates that the ratios of highly suitable land, suitable land, moderately suitable land and unsuitable land in GHLD are 18.75%, 10.31%, 64.16%, 6.78%, respectively. This result accords with spatial structure worked out by Space Development Strategy Planning of GHLD. Based on this result, several suggestions are made to guide UGB developments in future.

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