沈阳地区主要树木净化SO2潜力及植树定额的估算

摘要/Abstract

摘要： 通过实地测定和熏烟实验,揭示了沈阳地区不同类型树木的总生物量、SO₂吸收强度和S的吸转周期数,三者的乘积是树木净化SO₂的总潜力,为4.39×10⁶kg,约占沈阳年排S量120×10⁶kg的3.66%.树木平均最高可净化S12.19kg·km^-2·d^-1.沈阳现有树种组成的平均吸S量为0.70kg株^-1·年^-1;若以阔叶乔木平均吸S量1.35kg·株^-1·年^-1计,欲全部净化沈阳的年排S量,需要阔叶乔木8888×104株,相当于现有树木株数的12.9倍.经推算,在增强环保力度、减少年排S量20%的条件下,再扩植现有树木1.0倍的阔叶乔木,即可使沈阳大气SO₂浓度下降到0.06mg·m^-3以下,成为环境达标城市.

关键词: 沈阳地区, 主要树木, 净化SO₂潜力, 植树定额, 土壤呼吸, Q₁₀, 科尔沁沙地, R₁₀, 氮肥

Abstract: The total potential of purifying SO₂ of main tree species was studied by using the combination of field measurement and fumigation experiment in this paper.The integrated value of purifying SO₂ including total bimass,absorption intensity of SO₂,and absorption transformation periods of sulfur by trees was 4.39?10⁶ kg,which was accouted for 3.66% of total sulfur released per year in Shenyang.It indicated that the maximum daily potential of purifying SO₂ of trees might be 12.19kg穔m^-2.Supposed that the average annual absorption capacity for sulfur of tress in Shenyang was 0.70 kg per tree and the average annual absorption capacity for sulfur of broad leaved trees was 1.35kg穞ree^-1,88.88 million broad leaved trees would be required to purify the annual released SO₂ thoroughly.This number was equivalent to 12.9 times of existing trees.On the conditions of strengthening environmental protection and decreasing 20% of annual released sulfur,if the broad leaved trees was double of the present number,SO₂ content in air might be below 0.06 mg穖^-3 and Shenyang would become a standardizing city with clear air.

Key words: Shenyang area, Main tree, Potential of purifying SO₂, Quota of planting tree, soil respiration, nitrogen fertilizer, R₁₀., Keerqin sandy land, Q₁₀

中图分类号:

S727.28

韩阳, 李珍珍, 刘荣坤. 沈阳地区主要树木净化SO₂潜力及植树定额的估算[J]. 应用生态学报, 2002, (5): 601-604.

HAN Yang, LI Zhenzhen, LIU Rongkun . Potential of purifying SO₂ of main tree species and their planting quota in Shenyang area[J]. Chinese Journal of Applied Ecology, 2002, (5): 601-604.

参考文献

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沈阳地区主要树木净化SO₂潜力及植树定额的估算

Potential of purifying SO₂ of main tree species and their planting quota in Shenyang area

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