城市森林生态系统滞纳空气颗粒物功能向生态系统服务的转化率

发布时间：2018-01-23 09:49

本文关键词： 空气污染物颗粒物城市森林生态系统功能生态系统服务　出处：《应用与环境生物学报》2016年06期 　论文类型：期刊论文

【摘要】：生态系统服务是生态系统功能中有利于人类福祉的部分,生态系统功能向服务的转化研究成为未来生态系统服务评估的重要发展方向.以大气环境污染较为严重的北京市和陕西省关中地区的城市森林生态系统为例,利用气溶胶再形成法,研究不同树种和污染区城市森林生态系统滞纳空气颗粒物能力,探讨其向服务的转化率问题.结果表明,城市森林生态系统中不同树种滞纳空气颗粒物功能向服务的转化率存在差异,雪松最高,达95%,而白皮松最低,仅为47%,树种滞纳颗粒物能力与转化率没有必然联系,电镜扫描结果显示与叶表微观结构特征如气孔大小或多少、绒毛长短、蜡质层有无等有关.空气污染强度不同的多个城市中,转化率为宝鸡西安咸阳韩城杨凌渭南铜川,空气污染严重的城市转化率较高,空气质量优越且颗粒物含量少的城市,转化率相对较低.因此,叶片表面结构和树种所处地区的空气污染程度共同决定了城市森林生态系统滞纳空气颗粒物功能向服务的转化率;空气质量较差地区应增加绿地面积、提高植被覆盖率,有针对性地选择转化率较高的树种.
[Abstract]:The ecosystem service function of ecosystem is beneficial to human well-being, ecosystem function to the transformation of services has become an important development direction of future ecosystem service evaluation. The city forest ecosystem of atmospheric environment pollution is more serious in Beijing city and Shaanxi Province, Guanzhong area as an example, using the method of aerosol form, different species and pollution area city forest ecosystem fine particulate air capacity, to explore its rate to service transformation. The results showed that the forest ecological system in the city of different tree species for particulate functional differences, to service the conversion rate reached 95%, the highest cedar, and Pinus bungeana lowest, only 47% species, fine particles the ability of conversion and not necessarily linked, SEM results showed that leaf surface microstructure features such as pore size or number, fuzz length, wax layer has no matter The air pollution in the city. A number of different intensity, the conversion rate of Baoji Xi'an Xianyang Hancheng Yangling Weinan Tongchuan City, air pollution is serious the conversion rate is high, the air quality is superior and less particulates in the city, the conversion rate is relatively low. Therefore, the leaf surface structure and tree species by air pollution area the joint decision of the forest ecological system of city fine air particles function to service transformation rate; poor air quality area should increase the green area, improve vegetation coverage, to choose a higher conversion rate of species.

【作者单位】：中国林业科学研究院森林生态环境与保护研究所;
【基金】：林业公益性行业科研专项(20130430101、201204101)资助~~
【分类号】：S718.5;X513
【正文快照】： 生态系统功能(Ecosystem functions)的概念最早由著名生态学家E.P.Odum于1953年在其代表著作中提出,认为生态系统功能独立于人类而存在,是生态系统本身所具备的一种基本自然属性[1].人类对自然环境影响的增强,使得生态系统研究逐渐由自然属性向社会经济属性转变[2],生态系统服

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