局地气候分区图的一致性评估与改进  

Consistency Evaluation and Improvement of Local Climate Zone M aps

作　　者：邵丽丽 孟庆林[1] 袁磊[3] 许雪松 汪俊松[1] SHAO Lili;MENG Qinglin;YUAN Lei;XU Xuesong;WANG Junsong(State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510641,Guangdong,China;Guizhou Minzu University,Guiyang 550025,Guizhou,China;Shenzhen University,Shenzhen 518000,Guangdong,China)

机构地区：[1]华南理工大学亚热带建筑科学国家重点实验室,广东广州510641 [2]贵州民族大学,贵州贵阳550025 [3]深圳大学,广东深圳518000

出　　处：《建筑科学》2024年第12期255-264,共10页Building Science

摘　　要：2012年局地气候分区(Local Climate Zone,LCZ)分类方案的提出,为城市形态与气候之间的相互作用提供了研究基础,利用遥感数据制作LCZ地图是主流的方法。目前,遥感制图方法的改进主要集中在分类算法方面,关于如何减少人为因素对训练样本影响的研究相对缺乏,这对制作高度异质城市LCZ图至关重要。以贵阳为例,利用土地覆盖图一致性评估方法,对2套全球和1套本地LCZ数据进行评估,将一致性评估结果作为新图的参考训练数据集,改进全球城市数据库和访问门户(World Urban Database and Access Portal Tools,WUDAPT)的最新制图法。结果表明:1)3套高质量LCZ数据的类型不一致,本地LCZ数据存在类型遗漏的问题;2)3套数据中完全一致的区域仅占研究区总面积的21.5%,而全部不一致的面积占比达38.7%;3)基于一致性评估改进制图的方法可以减少制作训练样本的主观偏差和制作时间,避免类型遗漏,且城市建筑类型分类精度相较于现有研究有明显的提高。该方法可用于高度异质的城市环境,为城市气候相关研究提供基础。The Local Climate Zone(LCZ)program launched in 2012 provides a research basis for the interaction between urban form and climate.It is a mainstream method to produce LCZ maps by using remote sensing data.The current focus of research in the field of remote sensing mapping is on the development of improved classification algorithms.There is a paucity of studies addressing the issue of how to minimize the influence of human factors on training samples,which is of critical importance for the production of highly heterogeneous urban LCZ maps.With Guiyang as an example,the land cover map consistency evaluation method was utilized to assess the consistency of three sets of LCZ data,including two sets of global data and one set of local data.The consistency evaluation results were used as the reference training dataset for the new map,to improve the up-to-date mapping method of the World Urban Database and Access Portal Tools(WUDAPT).The results showed that 1)The types of the three sets of high-quality LCZ data are inconsistent,and the local LCZ maps have the problem of type omission;2)The area with complete consistency in the 3 sets of data only accounted for 21.5%of the total area of the study area,while the percentage of all inconsistent areas amounted to 38.7%;3)The method of improved mapping based on the consistency evaluation of multi-source LCZ maps can reduce the subjective bias in producing training samples and the time of production,avoid type omission,and improve the accuracy of urban building type classification significantly compared with existing studies.The method can be used in highly heterogeneous urban environments to provide a basis for urban climate-related research.

关 键 词：城市气候 局地气候分区 一致性评估 全球局地气候分区数据 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]