珠三角咸水入侵变化趋势及其动力因素影响分析

The Evolution Trend of Salinity Intrusion and Analysis of Its Dynamic Factors in Pearl River Delta

本文依据实测数据和文献资料总结得出了珠江三角洲咸水入侵的总体变化趋势,并着重分析了其动力因素的影响。90年代以前珠三角地区咸潮活动相对处于弱势状态,90年代以后特别是近年来咸水入侵则大为加剧,其动力因素影响主要包括径流、潮汐、地形地貌变化、海平面变化、风力风向等。文章最后提出了有关珠三角咸潮的观点看法和未来的研究展望。

Based on the field data and relevant literatures, the trend of salinity intrusion change in Pearl River Delta has been revealed. Meanwhile, we pay more attention to the dynamic factors which influence the salinity intrusion. By analyzing the measured data, we have gotten the conclusion that, the salinity intrusion in Pearl River Delta was relatively weak before 1990s; however, it has become more and more serious since 1990s especially in recent years. There are many dynamic factors which influence the salinity intrusion in Pearl River Delta, such as the flow rate, the tide, the variety of landform, the change of sea-level, the wind, and so on. At last, some opinions and research prospects on salinity intrusion in Pearl River Delta are presented.