樹木所受的影響

photosynthesis
-light
-carbon dioxide
-water
carried out by leaves which contain chlorophyll

respiration
-oxygen
-food(made by photosynthesis)

transpiration
-light intensity
-air movement
-humidity
-temperature

2007-03-14 22:35:15 補充：
of course,nutrients(mostly mineral salts and water) from soil are also necessary,but not the most important in the whole situation

光線強弱、泥土的養份、空氣中的污染、溫度的變化