The impact of rapid urban expansion on coastal mangroves:a case study in Guangdong Province,China

Bin AI; Chunlei MA; Jun ZHAO; Rui ZHANG

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The impact of rapid urban expansion on coastal mangroves:a case study in Guangdong Province,China

机译：快速城市扩张对沿海红树林的影响：以中国广东省为例

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机译：Mangroves serve many important ecological functions and consequently represent a dominant coastal ecosystem.However,coastal regions are very susceptible to ecological damage due to their high population density,urban expansion being one of the most important influencing factors.Accordingly,it is vital to ascertain how urban expansion endangers mangrove ecosystems.This study used the decision-tree classification method based on classification and regression tree(CART)algorithm to extract areas of mangrove and built-up land from Landsat images.A correlation analysis was performed between the change in the area of mangroves and the change in the area of built-up land at the cell scale.This study aimed to reveal the magnitude of the influence of urban expansion on mangrove forests in different periods and in different regions,and to identify the places that are seriously affected by urban expansion.The results demonstrate that this approach can be used to quantitatively analyze the impact of urban expansion on mangrove forests,and show that larger areas of mangrove were affected by urban expansion in the past 30 years.The effects of urban expansion were stronger over time,with approximately 12%of cells containing mangroves showing a negative correlation between the increase in the area of built-up land and the change in the area of mangrove forests to different degrees from 2005 to 2015.The same quantitative analysis was also carried out in three subregions of Guangdong Province,namely western Guangdong Province,the Pearl River Delta,and eastern Guangdong Province.It was found that the situations in these three regions were very different due to discrepancies in the distribution of mangroves,the rate of urban expansion,and the awareness of the local government regarding environmental protection.These results can assist in the management of coastal cities and the protection of mangrove ecosystems.

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来源
《地球科学前沿：英文版》 |2020年第1期|P.37-49|共13页
作者
Bin AI; Chunlei MA; Jun ZHAO; Rui ZHANG;
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作者单位

School of Marine Sciences Sun Yat-Sen University Guangzhou 510275 ChinaGuangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering Guangzhou 510275 ChinaSouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000 China;

School of Marine Sciences Sun Yat-Sen University Guangzhou 510275 China;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类中国工业经济;
关键词
mangrove; urban expansion; ecological stress; coastal Guangdong;

机译：红树;城市扩张;生态压力广东沿海;
入库时间 2024-01-27 05:13:18

The impact of rapid urban expansion on coastal mangroves:a case study in Guangdong Province,China

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