新疆天然胡杨林净化大气环境功能价值测算

Assessment of Purifying Atmosphere Environment Function Value of natural Populus euphraticain Xinjiang

以新疆天然胡杨林为研究对象,通过测定胡杨净化大气环境指标,测算新疆天然胡杨林净化大气环境的功能量。结果表明:(1)新疆天然胡杨林净化大气环境总功能量为4 158 517.67t·a^(-1),总价值为95 756.53万元·a^(-1),南疆地区高于北疆;胡杨各龄组中,近熟林净化大气环境功能量和价值量最高,达1 426 513.26t·a^(-1)和32847.69万元·a^(-1),幼龄林最低,仅为68 311.44t·a^(-1)和1 573.09万元·a^(-1);(2)在净化大气环境各功能中,功能量由高到低依次为滞尘>吸收二氧化硫>吸收重金属>吸收氟化物>吸收氮氧化物,价值量则是滞尘>吸收重金属>吸收二氧化硫>吸收氟化物>吸收氮氧化物;滞尘在天然胡杨林净化大气环境功能中贡献突出,今后须加强对天然胡杨林滞尘能力的相关研究。

Taking natural Populus euphraticain Xinjiang as the research object,through determining indicators of purifying atmospheric environment for Populus euphratica,combined with the forest resource inventory data for management in Xinjiang of 2014,function amount of purifying atmosphere environment was measured.The value of purifying atmosphere environment of natural Populus euphraticain Xinjiang was estimated by applying production cost method,the shadow value method &alternative engineering method.Result shows that:(1)The total of purifying atmosphere function of natural Populus euphraticain Xinjiang is 4.16×10~6 t·a^(-1),the total value is 9.57×10~8 yuan·a^(-1),the southern region is higher than in northern;in the all age,near mature forest purifying atmosphere environment function and value is the highest,up to 1.43×10~6 t·a^(-1) and 3.28×10~8 yuan·a^(-1),the young forest is the lowest,only 6.83×10~4 t·a^(-1) and 1.5 7×107 Yuan·a^(-1);(2)In every function of purifying atmospheric environment,the function from high to low is dust-retention>absorption of sulfur dioxide>absorption of heavy metals>absorption of fluoride>absorption of nitrogen oxides,the amount of value is dust-retention > absorption of heavy metal> absorption of sulfur dioxide> absorption of fluoride> absorption of nitrogen oxides;in the function of purifying atmosphere environment for natural Populus euphratica,dust-retention is outstanding,it is necessary to strengthen the research on dust-retention ability in the future.