| The forest is the subject of terrestrial ecosystem, called "the lungs of our planet," For contamination has Purification buffer role of the filter effect is forest ecological system with one of the important ecological service function. In recent years, due to human activity intensifies, fragile northwest arid atmospheric environment was violent disturbances of atmospheric environment quality, produced significant impact. Tianshan spruce(Picea schrenkiana Fisch.et Mey. P.schrenkiana) for gymnosperms sonko evergreen trees - snow ridge spruce varieties, is the main component of xinjiang forest of xinjiang, the mountain forest purify air function plays a leading role. This research mainly to north tianshan mountain forest hills spruce coniferous forest as the research object, the air environment of coniferous forest dust, total suspended particles regular monitoring (2009.5 2009.10)and and the characteristics of different altitude SO2 pollutants in the content YunShaLin preliminary monitoring and feature pollutants analysis of characteristics of change of rose NOx, to evaluate the filter and purify to forest the function of air pollutants, and estimation of mountain forest ecosystem service value, and analyzes the characteristics of mountainous forests purification urumqi contribution of air pollutants. The main research conclusions are as follows:(1)The dust features:YunShaLin can effectively cut atmospheric particulates viscous, and the higher the crown density, cut the dust capacity. in June and July, woodlands than control area cut dust capacity increases the maximum and minimum value respectively is 4.88 g/m2, and increase 34.8%,225 g/m2·30d, increase 20.3%,; every month sluggish dust capacity respectively about 1558.20 t,2038.40 t; Forest ecosystems service value hysteresis dust respectively is 2.65×105million yuan, 3.47×105million yuan RMB.(2)Total suspended particle purification features: YunShan total suspended particle concentration is more than outside Forest. in June and in July, Every forest cubic air can Resistance total suspended particles is 0.038 - 0.052 mg; YunShan total suspended particles in the air environmental air quality standard concentrations reach daily average level standard.(3)Sulfu purification quantity analysis and Nitrogen variation characteristics analysis: at an altitude of gradient, calculate the uptake of the trees unto largest and smallest sulfur respectively is 0.74 mg·g-1,0.11 mg·g-1 . different elevations gradient and relevant analysis leaves sulfur, correlation coefficient (R) is 0.642, significant (bilateral) is 0.169, performance for no significant correlation, ecosystem service value of sulfur dioxide purification is 0.25 million yuan; YunShan nitrogen content of leaves roughly between present high summer, the characteristics of low tendency to have no obvious impact on pollutants.(4) The mountain forest the contribution of urumqi atmospheric environment.The features of atmospheric environment in urumqi choose regional model predicted ADMS pollutants in north tianshan mountain forest around the contaminant, the contribution of the concentration of the mountain forest respectively is 0.014mg/m3,0.010 mg/m3,Mountain forest purification urumqi sulfur dioxide and nitrogen oxides feature pollutants is 13.1%, 14.6%.Above conclusions show that north tianshan mountain forest is a huge potential for the air filter, its effect is remarkable. This paper research results can purify air function for evaluating the forest to provide ideas and methods for future business and management work arid forestry, also can provide theoretical basis for the sustainable development of forest and social economic development and environment construction provides scientific basis. |
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