On 21 August 2006, Prof.Anders Lindroth from Sweden visited LCS and delivered report on“Landsurface-Atmosphere Interactions in Northern Boreal Forests. Prof. Lindroth is Head of Department of Physical Geography and Ecosystems Analysis, Director of the Nordic Centre of Excellence (NECC), and Director of Geobiosphere Science Centre, Lund University.
Prof. Lindroth majored in research on interaction between land surface and atmosphere as well as carbon cycle. He is currently responsible for land surface observation network of Northern Europe. In his lecture, Prof. Lindroth mainly introduced the results from data analysis by developing flux observation in various land surface such as forest and cropland, including a) carbon source is formed from deforestation, releasing CO2 to the atmosphere; b) it gradually become carbon sink with 30-year or 60-year growth of forest, thus absorbing CO2 from the atmosphere; c) while the growth of forest reaches 100 years, the released CO2 will be greater than absorbed one. Therefore, it is not the usual consideration that the carbon budget of mature forest is balanceable. What is the reason that made the mature forest in north Sweden become carbon source? Prof. Lindroth indicated it might be the climate change.
Prof. Lindroth also introduced the Nordic Centre of Excellence (NECC) composed by Sweden, Denmark, Finland and Iceland. The Center has set up 53 research stations in forest, heath bosk, swamp, cropland, grassland, lake and city where observation and research were implemented mainly for carbon exchange. The stations provided sight-scale estimation value of intensity of carbon source and sink in typical ecological system so as to improve the accuracy of carbon exchange assessment of northern Europe or even northern hemisphere.
Dr. Ren Guoyu presided the seminar. Dr. Luo Yong, Director of LCS, and over 20 experts and graduate students attended the seminar joined the discussion.