Comparative Analysis Of The Four Plant Communities' Landscape Effect And Eco-efficiency Of Hunan Martyrs Park

21st century, low-carbon has become a hot topic, and the carbon sequestration of plant has also become the focus of the study. Related researches before about plant landscape design are more focus on visual effects and functional requirements of plant community. There is no specific data to support the design methods and design principles such as scientific, artistic, ecological principles. In the view of carbon sequestration, are the traditional design methods and principles of plants landscape reasonable or not? This dissertation is focus on this question and exploring it.The4plant communities of Hunan Martyrs Park are the study's aim.Photographic record of the seasonal visual affects changes of4plant communities throughout the year, analysis it. Using the LI-6400XT portable photosynthesis system to determinate the plant's photosynthetic light-response curve and the diurnal variation of photosynthetic rate, analysis of the plant's photosynthetic, estimates of plant carbon fixation capacity. The light intensity, temperature and humidity values, the concentration of carbon dioxide of the community both inside and outside are measured by the illuminometer, hygrometer, and carbon dioxide, and then, analyzing eco-efficiency of plant communities. Analyzing the results, comprehensive evaluate the visual effects and eco-efficiency of the4plant communities, disscussing the way to constructing the artificial cultiviation plant community in city, giving some advice about it.The research of the plant community's comprehensive efficiency of Hunan Martyrs Park show:In central region such as Changsha, it is a good way to constrcute a plant community that use the deciduous tree configure strong shade-tolerant evergreen shrub or evergreen flowering shrub that can be adapted to a variety of lighting conditions, combined with the shade-tolerant grass. The upper deciduous tree can select the plants which have a good landscape effect (flower, leaf, gesture, branches); the middle of the community configure wide adaptation or strong shade-tolerant flowering evergreen plants; the underlying can be planted very shade-tolerant or shade herbaceous or woody plants, so as to satisfy the ecological habits of plants, have good eco-efficiency and creat a plant community which is full of seasonal changes in the landscape effect.All the results of the research indicate that a good plant community in comprehensive capacity is not a simple superposition of individual factors such as carbon fixing and oxygen releasing capacity, and so on, it is a systems engineering, need the reasonable match of the various factors.