An industrial heat source dataset based on remotely sensed active fire/hotspot detection in China from 2012 to 2021

IF 3.3 3区 地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY
Caihong Ma, Xin Sui, Linlin Guan, Yanmei Xie, Tianzhu Li, Pengyu Zhang, Yubao Qiu, Weimin Huang
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Abstract

The distribution of industrial heat sources (IHSs) is a crucial indicator for evaluating energy consumption and air pollution levels. However, there is a notable lack of IHS datasets in China that are frequently updated, span long periods, contain detailed characteristic information, have been individually validated and are publicly available. In this study, IHS datasets from China between 2012 and 2021 were constructed using the Visible Infrared Imaging Radiometer Suite (VIIRS) I Band 375 m NRT Active Fire/Hotspots (ACF) Product (VNP14IMGTDL_NRT) to monitor and analyse large-scale IHSs. First, a density segmentation method based on an improved K-means algorithm using ACF data and spatial topological correlation analysis was conducted to construct the IHS. Then, 4410 records covering China between 2012 and 2021, with 21 attributes, were obtained and verified, with an individual identification precision of 95.08% via manual verification based on high-resolution remote-sensing images and point of interest (POI) data. Finally, the trend of the spatiotemporal variation in IHSs was analysed using a long time series. The results showed that the spatial distribution of IHSs in China from 2012 to 2021 exhibited local aggregation and a gradual shift from east to west. In addition, the number of IHSs in China showed an initial increasing trend from 2012 to 2014, followed by a decrease since 2014, consistent with national energy reform-related policies. The results of this study indicate the temporal variation in IHSs, enhance the precision of identifying fire location categories and demonstrate the potential for improving energy efficiency, reducing emissions and ensuring sustainable development in China.

Abstract Image

基于遥感主动火灾/热点探测的 2012-2021 年中国工业热源数据集
工业热源(IHS)的分布是评估能源消耗和空气污染水平的重要指标。然而,中国明显缺乏更新频繁、时间跨度长、包含详细特征信息、经过单独验证并可公开获取的工业热源数据集。本研究利用可见光红外成像辐射计套件(VIIRS)I 波段 375 m NRT Active Fire/Hotspots(ACF)产品(VNP14IMGTDL_NRT)构建了 2012 年至 2021 年的中国 IHS 数据集,用于监测和分析大尺度 IHS。首先,利用 ACF 数据和空间拓扑相关性分析,基于改进的 K-means 算法的密度分割方法构建了 IHS。然后,基于高分辨率遥感影像和兴趣点(POI)数据,通过人工验证,获得并验证了覆盖中国 2012 年至 2021 年的 4410 条记录,包含 21 个属性,个体识别精度达到 95.08%。最后,利用长时间序列分析了 IHS 的时空变化趋势。结果表明,从 2012 年到 2021 年,中国 IHS 的空间分布呈现出局部聚集和由东向西逐渐转移的趋势。此外,中国的 IHS 数量在 2012 年至 2014 年期间呈现出先增加后减少的趋势,这与国家能源改革相关政策相一致。本研究的结果表明了 IHS 的时间变化,提高了火灾地点类别识别的精确度,并展示了提高能效、减少排放和确保中国可持续发展的潜力。
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来源期刊
Geoscience Data Journal
Geoscience Data Journal GEOSCIENCES, MULTIDISCIPLINARYMETEOROLOGY-METEOROLOGY & ATMOSPHERIC SCIENCES
CiteScore
5.90
自引率
9.40%
发文量
35
审稿时长
4 weeks
期刊介绍: Geoscience Data Journal provides an Open Access platform where scientific data can be formally published, in a way that includes scientific peer-review. Thus the dataset creator attains full credit for their efforts, while also improving the scientific record, providing version control for the community and allowing major datasets to be fully described, cited and discovered. An online-only journal, GDJ publishes short data papers cross-linked to – and citing – datasets that have been deposited in approved data centres and awarded DOIs. The journal will also accept articles on data services, and articles which support and inform data publishing best practices. Data is at the heart of science and scientific endeavour. The curation of data and the science associated with it is as important as ever in our understanding of the changing earth system and thereby enabling us to make future predictions. Geoscience Data Journal is working with recognised Data Centres across the globe to develop the future strategy for data publication, the recognition of the value of data and the communication and exploitation of data to the wider science and stakeholder communities.
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