漳州市景观格局的热环境效应研究

Study on the Thermal Environment Effect of Landscape Pattern in Zhangzhou

城市化导致的景观格局变化是引发城市热岛效应的重要因素。深入探索景观格局的热环境效应,对保障居民健康及城市可持续发展具有重要意义。研究基于漳州市的Landsat遥感数据,运用景观生态学及空间自相关理论,揭示了景观格局与城市热环境的耦合关系。结果显示:(1)漳州市绿地、水域的热岛强度普遍较低,建设用地、耕地的热岛强度则较高。(2)景观格局与热岛强度具有较强的关联,且空间溢出效应明显。(3)绿地斑块越连续集中,其降温效果越显著;聚集或细碎的建设用地、耕地均有明显的热岛效应。研究可为应对城市气候变化、优化城市景观格局提供理论参考。

The change of landscape pattern caused by urbanization is an important factor causing the urban heat island effect.Exploring the effects of landscape pattern on thermal environment is of great significance to ensuring the health of the residents and the sustainable development of cities.Based on Landsat remote sensing data of Zhangzhou city,landscape ecology and spatial autocorrelation theory were applied to reveal the coupling relationship between landscape pattern and urban thermal environment.The results show that the areas with low urban heat island intensity(UHII)in Zhangzhou city are mainly greenspace and water,while the areas with low UHII are mainly construction land and cultivated land.The landscape pattern is significantly correlated with UHII,and there is an evident spatial spillover effect.The degree of aggregation of greenspace are positively correlated with cooling effect,while clustered or fragmented construction land and cultivated land have obvious heat island effect.The research results can provide theoretical reference for mitigating urban climate change and optimizing urban landscape pattern.