Evaluation of Land Ecological Suitability in Lushi County Based on Minimum Cumulative Resistance Model
The urban land landscape can be divided into two parts of ecological land and construction land.The expansion of these two parts can be regarded as a dynamic process.ArcGIS software was used to simulate the land expansion movement,and the urban land suitability evaluation mechanism based on the minimum cumulative resistance difference model of the two processes was constructed.The case of Lushi County,Sanmenxia City,Henan Province was studied.The construction land and ecological land were selected as the source of land expansion,and the resistance factor system was established from eight aspects of land inherent ecological attribute factor and extension ecological attribute factor.The evaluation results showed that the expansion area of suitable ecological protection land was 932.14 km2,accounting for 23.28%;the expansion area of suitable construction land was 3071.87 km2,accounting for 76.72%.The minimum cumulative resistance difference mode divided Lushi County into four areas of not difficult,generally difficult,relatively difficult,and difficult for ecological development,with the areas of 176.18,755.96,811.61,and 2 260.26 km2,accounting for 4.40%,18.88%,20.27%and 56.45%of the county area,respectively.The difficulty level zoning suitable for construction land development was oppo-site to that suitable for ecological protection land.
ecological suitabilityminimum cumulative resistance modelecological expansion landconstruction expansion land
NETL
NSTL
万方数据
