沈阳地区主要树木净化二氧化硫潜力的研究

通过实地测定和熏烟实验，揭示了沈阳地区不同类型树木叶子的总生物量，二氧化硫（SO2）吸收强度和硫的吸转周期数，三者的函数值即是树木净化SO2的总潜力为4780t，约占沈阳年排硫量120000t的1／25，平均每平方公里的树木每天最高净化13．28kg SDO2其中阔叶乔木占90％，这是树木在SO2伤害阈值下的最大净化潜力。

Studies on Potentials of Purifying SO_2 by Main Trees in Shenyang Areas

In this paper, by means of field measurement and fumigation experiments, it revealed that: the functional value of three factors that included total biomass, absorption intensity of SO 2 and absorption transformation periods of sulphur of leaves of different types of trees in Shenyang areas was the total potential, 4780 tons of purifying SO 2 by trees, which constituted about one twenty fifth of 120000 tons sulphur that released per year in Shenyang, and trees per square kilometre per year might purify 13.28 kg SO 2 per day at most, and 90 percent are broad leaved trees. This is the greatest potential under the threshold of purifying SO 2 by trees.