Abstract:Unusual saltwater intrusion in the Pear River Estuary in recent two decades has caused serious problem to water supply and drawn much attention. Field survey monitoring was conducted in this study to investigate impact of the unusual saltwater intrusion on surface water and groundwater quality, soil and plant ecosystem. It is found that salt water intrusion suppresses nitrification of ammonium and increases DO concentration in the waterway. Dominant plant communities in the upper reaches of the western four waterways have evolved from the autopotamic into the eurytopic due to saltwater intrusion. However, the above-mentioned impacts happen only within the main streams of the waterways, while water quality in large amount of small streams of the river net work, groundwater quality, agricultural soil and plant ecosystem outside the main streams remain uninfluenced due to the protection of dams and water gates.
刘明清, 郭振仁, 陈清华, 赵肖. 珠江口咸潮上溯的环境影响研究[J]. 中国环境科学, 2013, 33(增刊): 79-86.
LIU Ming-Qing, GUO Zhen-Ren, CHEN Qing-Hua, ZHAO Xiao. Research on environmental impact of unusual saltwater intrusion in Pearl River Estuary. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(增刊): 79-86.