
Stand Spatial Structure Optimization Using Graph Neural Networks
ZHANG Yuchen, DONG Xibin, ZHANG Tian, GUO Ben, ZHANG Jiawang, TENG Chi, SONG Zikai
Stand Spatial Structure Optimization Using Graph Neural Networks
The optimization of stand spatial structure is a key issue in achieving sustainable forest management. Traditional optimization methods often exhibit low efficiency in handling complex spatial relationships and large-scale data. This study proposed a stand spatial structure optimization method based on Graph Attention Networks (GAT). An integrated spatial structure evaluation system was established using the entropy-weighted matter-element analysis method, and a graph neural network model was constructed based on stand data from the Tanglin Forest Farm of the Xinqing Forestry bureau in northern Yichun,Heilongjiang Province. The model was applied to perform multi-objective optimization analysis of stand spatial structure. Experimental results showed that at a 25% harvesting intensity, the integrated spatial structure index improved from 4.336 to 7.256. The GAT model demonstrated superior performance in capturing complex spatial relationships and optimizing multi-objective tasks. This study provides an innovative and intelligent approach for optimizing stand spatial structure and managing forests, contributing to the enhancement of forest ecosystem health and stability.
Stand spatial structure / graph neural networks / matter-element analysis / graph attention network / entropy weighting method
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