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首页> 外文期刊>Chinese science bulletin >Restoring urbanization process In China in the 1990s by using non-radiance-calibrated DMSP/OLS nighttime light imagery and statistical data
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Restoring urbanization process In China in the 1990s by using non-radiance-calibrated DMSP/OLS nighttime light imagery and statistical data

机译：使用非辐射校准的DMSP / OLS夜间光成像和统计数据，恢复1990年代中国的城市化进程

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摘要

Since current administrative unit-based urban land area statistical data in China lack enough spatial information, the urbanization process research at large scale cannot be effectively supported. Based on the current administrative unit-based urban land area statistical data in China, a new approach to quickly and cheaply derive urban land information from the non-radiance-calibrated Defense Meteorological Satellite Program/ Operational Linescan System (DMSP/OLS) nighttime light imagery is presented in this paper. With the new approach, the urban pattern information in China in 1992, 1996 and 1998 was derived with the urbanization processes in China, in the 1990s restored by using the non-radiance-calibrated DMSP/OLS nighttime imagery. The accuracy assessment based on the statistical data showed that the relative error between the derived total urban land area and the statistical data at national scale was less than 2 percent in 1992, and less than 1 percent in 1996 and 1998, and the maximum relative error at province scale do not exceed 10 percent with most of the provinces less than 3 percent. In addition, the urban patterns derived from the high-resolution Landsat TM imagery were compared with those from the DMSP/ OLS data. The results showed that the urban pattern characteristics derived from DMSP/OLS were basically coincident with those from TM imagery with the total accuracy of about 80 percent. Thus it can be seen that our restored urbanization process in China in the 1990s by using the non-radiance DMSP/OLS nighttime imagery can be accepted and can represent the actual urban development in China at that time on the whole.
机译：由于中国目前基于行政单位的城市土地面积统计数据缺乏足够的空间信息，因此不能有效地支持大规模的城市化过程研究。基于中国当前基于行政单位的城市土地面积统计数据，一种新方法可从非辐射校准的国防气象卫星计划/作战线扫描系统（DMSP / OLS）夜间光成像中快速廉价地获取城市土地信息本文介绍。通过这种新方法，中国，1992年，1996年和1998年的城市格局信息是根据中国的城市化过程得出的，而在1990年代，则使用非辐射校准的DMSP / OLS夜间图像对其进行了恢复。根据统计数据进行的准确性评估表明，得出的城市土地总面积与国家规模的统计数据之间的相对误差在1992年小于2％，在1996年和1998年小于1％，最大相对误差在省级范围内，不超过10％，而大多数省份则不超过3％。此外，将高分辨率Landsat TM影像得出的城市格局与DMSP / OLS数据得出的城市格局进行了比较。结果表明，DMSP / OLS得出的城市格局特征与TM影像的城市格局特征基本吻合，总精度约为80％。因此可以看出，我们使用非辐射DMSP / OLS夜间图像在1990年代恢复的中国城市化进程是可以接受的，并且总体上可以代表当时中国的实际城市发展。

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