Estimation of Steel Stock in Building and Civil Construction by Satellite Images
Estimation of Steel Stock in Building and Civil Construction by Satellite Images
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DOI：
10.2355/isijinternational.51.313
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发表时间：
2011-01-01
影响因子：
1.8
通讯作者：
Adachi, Yoshihiro
中科院分区：
文献类型：
--
作者：
Hsu, Feng-Chi;Daigo, Ichiro;Adachi, Yoshihiro
钢铁是世界上使用最广泛的材料，在日本、亚洲和世界范围内进行了大量分析钢铁材料流的研究。虽然在物料流分析和钢铁库存核算中采用了自上而下和自下而上的方法，但这些方法的适用性在很大程度上取决于数据的可用性。为了克服这一数据有限的问题，我们提出了一种基于卫星图像的钢材库存估算方法。以往的研究表明，夜间灯光的卫星图像与人类活动密切相关，如电力消耗、CO(2)排放、GDP等，这些活动也与钢铁库存量有关。因此，在本研究中，我们将夜间灯光图像与土地覆盖数据结合使用，以估算日本和其他亚洲国家的建筑和民用建筑钢材库存。我们首先对日本的每个县进行了分析，然后将综合结果应用于日本、中国、韩国和台湾。建筑用钢量与城市夜间照明高度相关，而民用建筑结构用钢量与夜间照明总量关系更为密切。
Steel is the most widely used material in the world and numerous studies analyzing the material flow of steel have been conducted for Japan, Asia and the world. While top-down and bottom-up approaches have been employed in material flow analysis and steel stock accounting, the applicability of these approaches is largely dependent on data availability. To overcome this problem of limited data, we proposed a method for estimating steel stock based on satellite images. Previous studies have shown that satellite images of nighttime lights are closely correlated with human activities, such as electricity consumption, CO(2) emissions, and GDP, etc., which are also linked to the amount of steel stock. Therefore, in this study, images of nighttime lights were used in conjunction with land cover data to estimate the building and civil construction steel stock in Japan and other Asian countries. We initially performed the analysis for each prefecture of Japan and then applied the combined result to Japan, China, South Korea and Taiwan. Building steel stock was highly correlated with urban nighttime lights, while the steel stock used for civil construction structures was more closely correlated with total nighttime lights.