农业资源与环境学报2025，Vol.42Issue(3)：611-622,12.DOI:10.13254/j.jare.2023.0840
园地定级中复杂地貌区位作用分的优化算法研究
Optimization algorithm for the classification of complex landform location in garden grading:based on the least-cost path model
摘要
Abstract
The study explored an algorithm for assessing location effects suitable for complex terrain conditions,based on the least-cost path(LCP)model to improve the accuracy of location effect assessments in garden grading.A grid-based LCP model was proposed,considering geographical barriers such as water bodies,railways,and highways.Differentiated commuting time consumption for various land use types,combined with DEM data was used to calculate cumulative least commuting time consumption from the source grid unit to each grid unit to characterize location superiority and inferiority.The algorithm was then applied to study the calculation of location factors for park grading and compared with the results of the MCR model to demonstrate the practical superiority of the LCP model.Results showed that the LCP model effectively bypasses geographical barriers and calculates the role of location elements between complex landforms based on differentiated commuting costs and DEM elevation data.The spatial distribution pattern of the MCR model's location effect score was smoother,whereas the LCP model showed a clear comparison of location advantages and disadvantages in the border areas of landform types and valley areas,with stronger spatial differentiation.Compared with the MCR model,the LCP model's calculation results indicated an expanded value range of 9.01,a significantly increased variance of 23.49,and an average value decrease of 5.25,suggesting stronger spatial differentiation and more accurate reflection of actual location superiority and inferiority.The least-cost path model can provide effective technical support for grading natural resources such as garden under complex terrain conditions.关键词
自然资源定级/园地/最小费用路径模型/复杂地貌/太谷区Key words
natural resource gradation/garden/least-cost path model/complex landform/Taigu District分类
农业科技引用本文复制引用
胡后峰,郭永龙,王瑾,刘慧芳..园地定级中复杂地貌区位作用分的优化算法研究[J].农业资源与环境学报,2025,42(3):611-622,12.基金项目
太谷区农用地定级估价技术合作项目(2022HX219) Technical Cooperation Project for Agricultural Land Grading and Valuation in Taigu District(2022HX219) （2022HX219）
