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IGCP 379 Seminar ,Oct. 1998
------------------------------------------------------------------ ADVANCED SEMINAR IGCP 379 KARST PROCESSES AND THE CARBON CYCLE Date: Oct. 5-15, 1998 Venue: The Institute of Karst Geology, Guilin, China Host: The Karst Dynamics Laboratory, MGMR ------------------------------------------------------------------ The Karst Dynamics Laboratory hosted an 11 day IGCP 379 (UNESCO/IUGS) and the KDL funded Advanced Seminar on KARST PROCESSES AND THE CARBON CYCLE for international audience. The objective of the Seminar is to bring together scientists interested in karst processes with those interested in carbon cycle and global change. The Seminar consisted of a series of lectures, discussions, and field demonstrations in the Guilin Karst Experimental Site and some caves near Guilin. Prof. Dr. Wolfgang Dreybrodt, who is a distinguished physist and geochemist from Bremen University of Germany, gave lectures on carbonate chemistry, dissolution kinetics and cave development. Prof. Daoxian Yuan (leader of IGCP 379 and the director of the KDL), Dr. Zaihua Liu, Dr. Bin Li and Dr. Zhongchen Jiang, also gave lectures on global karst, carbon cycle related to karst, paleoenvironment reconstruction, and element movement relevant to karst ecology respectively. Field activities included one day visit in the Guilin Karst Experimental Site (mainly visiting the observation sites to reveal karst processes and the relevant carbon cycle, such as soil CO2 observation site, limestone denudation observation site, and spring discharge-chemistry observation site), one day sightseeing along Li River by boat and by bus, and one day visit in Fengyu Cave, a very famous tourism cave, about 100 km away from Guilin. The relevant topics are listed below. 1. Keynote Speeches Dissolution kinetics of limestone in Karst terrains ----Prof. W. Dreybrodt Computer Simulation of Stalagmite morphology ----Prof. W. Dreybrodt Hydrochemical, geomorphological and biological controls on travertine deposition in the barkly karst, northern Australia----Dr. R. Drysdale Early Evolution of Karst aquifers
a) Evolution of one-dimensional karst conduits.Basic principles
b) Karst evolution and morphology on two-dimensional percolation nets. Two kinds of karst dynamic system and their contribution to atmospheric CO2
sink Carbon transfer dynamics from bomb-14C time series of a laminated stalagmite from SW-France ----Dr. D. Genty Karst processes and the carbon cycle ----Prof. Daoxian Yuan Paleoclimatic records from stalagmites in Guilin ----Dr. Bin Li Element migration in karst dynamic system ----Dr. Zhongchen Jiang 2. Research reports An estimation on CO2 sink in karst processes-A case study in
semiarid area Study on release of deep situated CO2 at Kangding----Prof. Lizheng Yang The annual variation of grey level of microlayers in stalagmite from Shihua Cave, Beijing Environmental effect of reversed evolution of karst dynamic system in back water area of large reservoir----Dr. Xiaoguang Qin Movement dynamics of soil CO2 in karst area ----Dr. Leping Zhen Pattern and characters of stalagmite microlayers in North China ----Dr. Xianfeng Wang Carbon isotopes in karst system ----Mr. Shiyi. He
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