北京7种经济林吸滞PM2.5特征及其价值评估  

PM_(2.5) adsorbing characters and value appraisal of seven economic tree species in Beijing

作　　者：刘凤芹[1,3] 刘斌[2] 鲁绍伟[3] 李少宁[3] 杨超[2] 

机构地区：[1]北京林业大学经济管理学院,北京100083 [2]河北农业大学林学院,保定071000 [3]北京市农林科学院林业果树研究所,林果业生态环境功能提升协同创新中心,北京100093

出　　处：《干旱区资源与环境》2017年第3期124-129,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金(31500352);北京市农林科学院科技创新能力建设专项(KJCX20150205-2)资助

摘　　要：文中选取北京7个经济林树种,在仅考虑生态功能前提下,分析其作为园林绿化树种的吸滞PM_(2.5)特征,探讨叶表面形态特征对其影响,并利用合理指标评估其生态价值。结果表明:不同树种吸滞PM_(2.5)量介于0.089~0.258μg·cm-2,排序为:苹果>桃>枣>梨>核桃>杏>樱桃;吸滞PM_(2.5)量均在7、8月份较高,5月份较低;叶表面形态特征复杂,较为粗糙的叶片吸滞PM_(2.5)能力强;苹果吸滞PM_(2.5)量为0.83 kg·hm^(-2)·a-1,价值量约为67.47元·hm^(-2)·a-1。We studied variation of PM2.5 adsorbing characters of seven economic tree species in Beijing, researched the influence of leaf surface morphology, and valued its ecosystem services value with reasonable index in terms of merely considering the ecological functions. The results showed that： PM2.5 adsorption amount of dif- ferent economic forests ranged from 0. 089 to 0. 258μg · cm^-2, and the sequence of PM2.5 adsorbing capacity was： Malusdomestica 〉 Amygdalus persica L. 〉 Ziziphus jujuba Mill. 〉 Pyrus spp 〉 Juglansregia 〉 Arme- niaca vulgaris l_am. 〉 Prunuspseudocerasus. PM2.5 adsorption amount obviously presented seasonal variation, which appearing the biggest values in July and August, and appearing minimum values in May; leaf micromorphology was closely correlated with PMz.5 adsorption. The leaves with complicated micromorphology had stronger PM25 adsorbing capacity. Annual adsorption amount of Malusdomestica was 0.83kg· hm^-2, and the value reached 67.47yuan· hm^-2· a^-1

关 键 词：PM2.5 经济林 叶片形态特征 生态价值 北京 

分 类 号：X5[环境科学与工程—环境工程]