灌木园林景观扩张及空间格局演变模型仿真

Simulation of Shrub Landscape Expansion and Spatial Pattern Evolution Model

针对城市园林景观快速发展,导致已不适合现今绿化和审美需求的问题,提出灌木园林景观扩张及空间格局演变模型。利用土地使用动态度叙述不同土地的利用类型数量转化和变化速度,通过计算园林扩张强度指数、空间重构定量测度以及人工干扰的强度分析,得出园林景观土地的扩张情况;使用遥感技术和地理信息系统对互相为目的的空间要素和景观格局分析,得出灌木斑块面积占据景观的总面积百分比、密度指数以及分离度指数,采用热力学熵修正玻尔兹曼值,计算景观熵值,完成空间格局演变模型。仿真结果表明:将模拟的景观数据与真实数据对比,二者数据分布情况非常接近,以此可以证明构建的模型演化效果良好。

Currently, the rapid development of urban landscape results in a mismatch with greening and aesthetic needs. This paper proposed an expansion and spatial pattern evolution model of the shrub landscape. The dynamic degree of land use was adopted to describe the quantity transformation and change the speed of different land use types. According to the calculation results of landscape expansion intensity index, spatial reconstruction quantitative measurement and artificial interference, the expansion of landscape land was obtained. The combination of remote sensing technology and geographic information system was utilized to analyze the spatial elements and landscape pattern for each other’s purposes, obtaining the percentage of shrub patch area in the landscape, density index and separation index. The Boltzmann value was modified by thermodynamic entropy, and the landscape entropy was calculated. Finally, the spatial pattern evolution model was completed. The results show that the model in this work has an excellent evolution effect.