通过ANN揭示与LULC变化相关的热特性动态
Yasir Hassan Khachoo1, Matteo Cutugno2, Umberto Robustelli1
1Department of Engineering, University of Naples Parthenope, 80143 Naples, Italy.
Sensors (Basel, Switzerland)
|August 12, 2023
概括
那不勒斯的城市扩张正在以牺牲植被为代价增加建筑区. 这种趋势加剧了城市热岛效应,迫切需要为生态平衡和生物多样性采取保护措施.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 遥感 遥感 遥感 遥感
背景情况:
- 无计划的城市化和土地使用变化会降低城市热环境和生态健康.
- 热特性和土地使用土地覆盖 (LULC) 动态显著影响气候,经济和可持续性.
- 那不勒斯省面临着LULC变化及其热效应带来的挑战.
研究的目的:
- 分析1990-2022年间在那不勒斯的LULC变化和城市热场变量指数 (UTFVI).
- 预测未来的季节性热特性和2030年LULC分布.
- 调查LULC动态和UTFVI之间的相关性.
主要方法:
- 利用Landsat 4-5 TM和Landsat 9 OLI图像通过监督卫星图像分类进行LULC分类.
- 采用细胞自动机-人工神经网络 (CA-ANN) 算法进行LULC和UTFVI预测.
- 使用辐射转移方程 (RTE) 计算陆地表面温度 (LST),并通过交叉表格分析LULC-UTFVI相关性.
主要成果:
- 预计到2030年,建筑和赤裸的土地面积将增加9.4%,主要是以牺牲植被为代价.
- 夏季UTFVI预计将保持稳定,而冬季UTFVI显示强度增加,4.62%转移到更高的区域.
- 在那不勒斯观察到建筑区的向外扩张,特别是在北部中部地区,减少了植被覆盖面.
结论:
- 那不勒斯省显示出一个令人担忧的趋势,即建筑面积增加和植被减少.
- 未来的热量条件表明,城市热岛效应可能会加剧,尤其是在冬季.
- 需要紧急的保护战略来保护植被,保持生态平衡和保护生物多样性.
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