Journal of Geo-information Science >
Spatio-temporal Characteristics of Urban Storm Waterlogging in Guangzhou and the Impact of Urban Growth
Received date: 2014-11-14
Request revised date: 2015-01-26
Online published: 2015-04-10
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Urban storm waterlogging has become one of the common serious “urban diseases” in China. The purpose of this study is to examine the spatio-temporal characteristics of urban storm waterlogging in Guangzhou from the 1980s and analyze the relationship of urban storm waterlogging and urban growth. Information about the urban storm waterlogging in Guangzhou was gathered from the newspaper of Guangzhou Daily and from the waterlogging census implemented by Guangzhou Bereau of Water affairs. Moreover, Landsat TM/ETM 30 m images for the years of 1990, 1999, and 2010 were collected to monitor the urban growth of Guangzhou. Density estimation method was used to quantify the density of these waterlogging spots and calculate the construction land ratio of Guangzhou. The relationship of urban storm waterlogging with urban growth was explored using Pearson correlation coefficient. The results show that the urban storm waterlogging spots in Guangzhou had increased greatly on the time scale and had sprawled since the 1980s on the spatial scale. In the 1980s, waterlogging disaster mostly took place in Yuexiu district, which is the core area of Guangzhou. However, the disaster had gradually spread into districts that having rapid urban growth such as Baiyun and Tianhe after the 1990s. Simultaneously, the urban area also had sprawled rapidly from 1990 to 1999 and to 2010. According to the results of Pearson correlation coefficient calculation, the density of waterlogging spots is positively correlated with the construction land ratio, and the correlation relationship gradually strengthens with respect to the rapid urbanization, implying the notable impact of construction land ration on urban storm waterlogging. The results suggest that more attention should be paid to the optimization of construction land ratio in urban planning procedure, and the government should improve the condition of drainage pipeline system and facilities to avoid urban storm waterlogging.
LI Binye , ZHAO Yaolong , FU Yingchun . Spatio-temporal Characteristics of Urban Storm Waterlogging in Guangzhou and the Impact of Urban Growth[J]. Journal of Geo-information Science, 2015 , 17(4) : 445 -450 . DOI: 10.3724/SP.J.1047.2015.00445
Fig. 1 Study Area图1 研究区地理位置与分布 |
Tab. 1 Data sources and relevant information表1 数据及相关信息 |
数据名称 | 格式 | 时间(年) | 数据来源 |
---|---|---|---|
1:400万行政区划 | Esri shapefile | 2005 | 国家基础地理信息系统网站 |
Landsat遥感影像 | Img | 1990-11-03 1999-11-15 2010-10-28 | USGS |
高分辨率遥感影像 | Jpeg | 2000 2008 2010 | Google Earth 航片 |
暴雨内涝信息 | 文本资料 | 1980-2012 | 广州市水务局 《广州日报》 |
Fig. 2 Spatial distribution of urban storm waterlogging in the main districts of Guangzhou from 1980 to 2012图2 1980-2012年广州市主城区城市暴雨内涝事件点空间分布 |
Fig. 3 Kernel density of urban storm waterlogging in the main districts of Guangzhou from 1980 to 2012图3 1980-2012年广州市主城区暴雨内涝事件核密度 |
Fig. 4 Changes of construction land from 1990-2010 in the main districts of Guangzhou图4 1990-2010年广州市主城区城乡建设用地变化 |
Fig. 5 Changes of imperviousness density from 1990-2010 in the main districts of Guangzhou图5 1990-2010年广州市主城区不透水面密度变化 |
Tab. 2 The Pearson correlation coefficients between waterlogging density and imperviousness density表2 内涝点核密度与不透水面密度的皮尔森相关系数 |
时期 | 皮尔森相关系数 | 显著性(双尾) |
---|---|---|
20世纪80年代 | 0.214 | 0.01 |
20世纪90年代 | 0.317 | 0.01 |
2000年以后 | 0.429 | 0.01 |
The authors have declared that no competing interests exist.
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