Research on the Value Assessment of Air Pollutant Absorption of Hangzhou Scenic Forestland

Abstract

With the deepening of urbanization and the expansion of urban area, the deterioration of urban environment becomes more and more serious. The components of urban air and the ecological balance also have been destroyed seriously. As an important way to improve the urban environment, the ecological service function of urban scenic forestland to purify atmospheric environment has been paid more and more attention. This study does relevant evaluation researches on the function index of the air pollutant absorption for Hangzhou urban scenic forestland. The evaluation results are as follows: as for Hangzhou urban scenic forestland, the annual worth of SO2 absorption is 643,000 yuan/a, the annual worth of fluoride absorption is 16,000 yuan/a, the annual worth of nitrogen oxide absorption is 21,000 yuan/a, the annual worth of cadmium (Cd) absorption is 1,800 yuan/a, the annual worth of lead (Pb) absorption is 74,000 yuan/a, the annual worth of nickel (Ni) absorption is 2,500 yuan/a, and the total annual worth of air pollutant absorption is 760,000 yuan/a; The worth proportion of absorbing SO2 is much larger than that of other pollutants; there is a little difference between fluoride and nitrogen oxides; moreover, the worth proportion of absorbing Cd and Ni is much less than that of other pollutants, both of which are lower than 1%.