水问题论坛——2019年第14回（总第335回）

暨2019中澳研究生水论坛

时间：2019年7月8日（周一）下午14:30 - 17:30

地点：A0948 会议室    主持人：韩冬梅 副研究员

报告题目：Impact of urbanization on groundwater recharge in Melbourne Australia

领队报告人：Dr Matthew Currell (Associate Professor in Environmental Engineering, RMIT University Melbourne Australia)

报告摘要：Like many cities around the world, Melbourne is experiencing rapid population growth, and as a result the boundaries of the city’s greater area are expanding into regions of agricultural land. A recent study has been monitoring the effects on groundwater recharge of such land-use conversion to residential sub-divisions on the south-eastern boundary of the city. The area is located on the uplifted divide between two surface catchments, underlain by basins containing layered sedimentary and volcanic aquifers (Port Phillip and Western Port Basins).

A change from diffuse recharge occurring at relatively low rates within agricultural or naturally vegetated landscapes, to higher rates of more geographically restricted ‘point source’ recharge is thus one potentially consequence of urbanization associated with managing storm-water using such structures in the urban environment. Such change may be broadly occurring in many analogous settings worldwide. Urban stormwater management systems are generally designed to rapidly channel runoff to particular points in the landscape to avoid flooding; hence potential diffuse recharge is likely to be largely directed to these new point sources following land-use conversion. In general, recharge from these features is likely to be relatively fresh compared with diffuse recharge, as it is able to bypass the shallow soil zone, where evapotranspiration typically results in some degree of salinization. Ensuring the water quality in constructed wetlands is not compromised by pollutants from surrounding areas is crucially important for ensuring groundwater quality is not impacted adversely by such changes in recharge mechanism and location(s).   

报告人简介：Dr Matthew Currell Received his PhD from Monash University in 2011, having completed a hydrochemical and isotopic investigation of groundwater resources and groundwater sustainability in the Yuncheng Basin, North China. Dr Currell now lectures at RMIT University in the school of Civil, Environmental & Chemical Engineering, and has active collaboration projects with the EPA (Victoria), Department of Environment & Primary Industries, and Melbourne Water. Currently he is an associate editor of the Hydrogeology Journal.

研究生系列报告从16:30开始, 主要报告内容包括Impacts of reclaimed water replenishing river channels on water quality and eutrophication, Seawater intrusion in the Quaternary aquifer of coastal area, Migration of Heavy metals in a sophisticated karst groundwater system, Impact of Iron Oxides on Zn2+ and Cd2+ Adsorption by Weathering Basalts等。

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