园地定级中复杂地貌区位作用分的优化算法研究基于最小费用路径模型

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关键词：自然资源定级；园地；最小费用路径模型；复杂地貌；太谷区中图分类号：S159；P966；P208 文献标志码：A 文章编号：2095-6819（2025）03-0611-12 doi： 10.13254/j.jare.2023.0840

Optimization algorithm for the classification of complex landform location in garden grading：based on the least-cost path model

HU Houfeng1， GUO Yonglong 1，2∗ ， WANG Jin1， LIU Huifang1

（1. College of Resources and Environment， Shanxi Agricultural University， Jinzhong 030801， China; 2. Yangquan Planning and NaturalResources Bureau， Yangquan ， China）

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.

Keywords：natural resource gradation; garden; least-cost path model; complex landform; Taigu District

我国自然资源种类繁多、分布范围广，为促进自然资源的合理开发与保护，2020年5月自然资源部办公厅印发《关于部署开展2020 年度自然资源评价评估工作的通知》，这标志着园地、林地、草地等自然资源分等定级估价也正式提上日程[1]。（剩余18098字）