Abstract:Some hot topics in plant physioecology research have recently made regular appearances in a number of important international journals (Science, Nature, etc. ). These describe the responses of plant physioecology and growth to factors such as: increasing CO2 concentration, ultraviolet radiation enhancement, changes in temperature, sunlight irradiation and the enlargement of salty habitats. All of these factors are closely associated with the processes of global climate change. Some of the research, however, aims to investigate the response of plants to existing environmental stresses in specialised environmental habitats. Among the intensive studies, the carbon budget of terrestrial ecosystems is one of the hottest topics, research conducted recently, including: the emission of greenhouse gasses, sink and source dynamics of carbon at regional and global scales and the function of the terrestrial and oceanic ecosystems. Although the responses of C3 and C4 species to elevated CO2 are still the main topics in most journals, there has been much progress in study of CAM functional types. Progress in the application of new technologies such as stable isotope methods, free air CO2 enrichment (FACE) facilities, and chlorophyll fluorescence technology have helped greatly in understanding these general problems.