Abstract
This article takes Liuxi River Basin in Guangzhou as the research object, selects Landsat remote sensing data of 1993, 2000, 2011 and 2018 as data source, to access the five indices, including vegetation coverage, DEM, land use, soil index and slope. The comprehensive index method is used to obtain the ecological environment comprehensive index of this study area. The environmental quality is divided into 4 grades. The ecological environment of the basin and its dynamic changes have been comprehensively evaluated in the past 25 years. The results show that: In the Liuxi River Basin in 2018, the percentage of excellent natural ecological environment quality was 4.80%, the percentage of the areas with good quality was 44.53%; the percentage of the areas with general quality was 45.97% and the percentage of the areas with poor quality was 4.68%. Overall, the good and the general ecological environment quality is the majority. From the perspective of time from 1993 to 2018, the percentage of the area with excellent environmental quality increased by 1.69%; the percentage of the area with good environmental quality gradually decreased, with a total of 32.88%, but still occupied the largest proportion; The percentage of area with general environmental quality went up and down, with a total of 29.64%; the percentage of the area with poor environmental quality rose by 1.54%, the overall change was not big. The downstream ecological environment is showing a trend of deterioration. In upstream, the excellent ecological environment is the majority. The overall ecological environment of the river basin is developing for the better.
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Acknowledgments
This research is jointly supported by GDAS’ Project of Science and Technology Development (2016GDASRC-0211, 2017GDASCX-0601, 2018GDASCX-0403), duced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (GML2019ZD0301) and 2019 science and Technology Innovation Project of Provincial Special Fund for Economic Development (2019B1).
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Xie, Y., Liu, X., Wu, Z., Yang, J., Zhang, J. (2020). Ecological Environment Evaluation of Liuxi River Basin During Rapid Urbanization. In: Xie, Y., Li, Y., Yang, J., Xu, J., Deng, Y. (eds) Geoinformatics in Sustainable Ecosystem and Society. GSES GeoAI 2019 2019. Communications in Computer and Information Science, vol 1228. Springer, Singapore. https://doi.org/10.1007/978-981-15-6106-1_27
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DOI: https://doi.org/10.1007/978-981-15-6106-1_27
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