Overview on the 5th International Symposium on Modern Ecology Series of 2009

The Symposium on Modern Ecology Series is an international symposium which is jointly launched by Chinese ecologists at home and abroad with the aim to strengthen exchange and collaboration in new theory,new perspectives,new methods and hot topics of modern ecology. This paper summarizes all the twenty-five presentations of the 5th International Symposium on Modern Ecology Series held in Lanzhou University during June 2729 of 2009. The summary is briefly made from the perspectives of forest ecology,grassland ecology,global change ecology,rhizosphere and soil ecology,molecular and behavior ecology and agricultural ecology in the theme of macroscopic ecology and sustainable science. All the topics can be concluded into two big fundamental theoretical questions,i.e. material basis of ecosystem service function and ecological mechanism of ecosystem service. And the approaches to solve the questions must be explored under the framework of coupled human and natural ecosystem. In the meantime,some suggestions are proposed towards future improvement of the series.