Typical Lawn In Plant Photosynthesis Transpiration And Water Ecological Characteristics Of The Study

In this thesis which is guided by sustainable development and theory of system analysis, we analyzed the character of city biogeocenose and some problem in it at present , cognize city lawn is provided with ecological environment of beautify and virescence environment, adjust climate, fasten soil and preserve water, purify and monitor environment and so on. In view of conflict focus on city lawn and human contending water, we select Changchun city which is a city of lacking water in north as study section, and lake physiological and ecological character of lawn as study content.Lawn photosynthetic, transpiration and water consumption chatacter go through mostly four seedtime:(1) Lawn physiology development - individual level phases; (2) Law ecology development - community level phases; (3) Lawn drought resistance mechanism - molecule level phases; (4) theory application in practice - ecosystem level phases.Now, it is studying water consumption of lawn that becomes hotspot problem of studying in lawn industry.The thesis approve research objects have representative character and universality after systematic analysis of zoology adaptability of Poa pralensis, Red Fes cue and Target Percnnia Ryegrass. Using TPS-1 cellular photosynthesis system, We measured net photosynthetic rates ? transpiration rale and correlation physiological and physiological and ecological environment factors of three kind typical lawn in Changchun during the period from May to October in 2001 .We got such environmental factors of outside as soil moisture amount and so on at the same time. The relation which is among photosynthetic of three kind lawnx dateable and yearly transpiration rule and environmental factor is found by analysis. It is gotten account water consumption of lawn in certain unite area and ecological water requirement by accounting. All the result provides basic-2-data for park and garden department in Changchun and offer scientific and logical advice. At the same time we hope to get more ecological benefit by using less economy.