The written sources of the Pearl River Delta indicate that the population of the area increased by more than eightfold around 2,000 years ago. This change is reflected in a dramatic change in sediment characteristics which proves the widespread settlement of southern China at that time. In particular, it shows the establishment of agriculture, especially sugarcane agriculture, through the region. Farmers disrupted the previously stable soils and allowed more chemically altered materials to be delivered to the delta.
Changes have continued to occur ever since, with massive modern disturbance. This is particularly following the industrialisation of the delta, though this is just the continuation of a very long term trend of anthropogenic impact on the landscape. In this way, humans have impacted the landscape of southern China as dramatically as any climate change that has affected the region since the end of the last glacial period from 10,000 years ago. In modern times, dredging plus huge industrialisation, have changed the region almost beyond recognition. In his talk, Professor Clift untangles the wide variety of human and natural changes to the delta using his data from extensive cores of sediments from the floor of the estuary and offshore areas.
Professor Peter Clift read Earth Sciences at Worcester College, Oxford, followed by taking a doctorate in Geology & Geophysics from the University of Edinburgh. Following a brief career in the exploration geology industry, he held academic posts at several universities in the United States. From 2004 to 2012, Professor Clift was Professor of Geology at the University of Aberdeen. He is now Professor of Petroleum Geology at Louisiana State University. While widely recognised for his work on Holocene climate change, for which he is widely published, he is perhaps best known for relating his geomorphologic work to human civilisations. He speaks widely at conferences worldwide, is a visiting lecturer at several universities and advises academic organisations worldwide.
Members and their guests are most welcome to attend this event, which is HK$150 for Members and HK$200 for guests and others.