工业热异常环境效应分析

Analysis of environmental effects of industrial thermal anomalies

工业作为影响城市热环境的重要机制之一,准确检测出引起热异常的工厂,分析工业热异常对局域热环境的影响力度,对科学规划工业建设、改善城市热环境具有重要意义。基于不同季节的Landsat8数据,采用辐射传输方程法反演地表温度,对比在热场变异指数基础上以不同分级方式进行热异常检测的方法,并依据较高精度的检测结果进行局域热环境效应分析。结果表明:四级法更适合工业热异常检测研究;工厂生产规模与其对应热异常斑块面积呈正比关系,工厂生产规模面积每增加5.8 km^2,热异常斑块面积平均增加0.18 km^2;工业热异常对局域建设用地和非建设用地均有热环境效应,对建设用地的增温作用随着距离越远作用越小,对1 km范围内的非建设用地增温作用明显。研究成果可为工业热异常检测、分析工业热异常对局域环境效应提供参考。

As one of the important mechanisms affecting urban thermal environment,industry accurately detects factories that cause thermal anomalies,and analyzes the impact of industrial thermal anomalies on local thermal environment,which is of great significance for scientific planning of industrial construction and improvement of urban thermal environment.Based on the Landsat8 data of different seasons,this paper uses the radiation transmission method to invert the surface temperature,compares the thermal anomaly detection method based on the thermal field variation index,and performs the local thermal environment effect analysis based on the higher precision detection results.The results are as follows:①The four-stage method is more suitable for industrial thermal anomaly detection research.②The scale of the factory production is directly proportional to the area of the corresponding thermal anomaly plaque.For every 5.8 square kilometers of factory production scale,the average thermal plaque area increases by 0.18 square kilometers.③Industrial thermal anomalies have thermal environmental effects on local building and nonbuilding,the effect of warming on building is smaller with distance,and the effect of temperature increase on nonbuilding in the 1 km range is obvious.The research results can provide reference for industrial thermal anomaly detection and analysis of the effects of industrial thermal anomalies on the local environment.