学术报告摘要要求

学术报告摘要要求

1.学术报告摘要要求800-1000字，阐述报告主要内容，稿件语言可以为中文或英文，有标题、作者、摘要正文几个部分，不可直接原文复制PPT中的文字。

2.用纸规格统一为A4，页面上边距和下边距分别为2.54cm，左边距为3cm，右边距为2.5cm。

3.文中单位名称的书写，应采用国际通用符号，也可用中文名称，但全文应统一，不可混用；所有符号都必须符合国家标准的规定。

4.中文摘要中的英文统一用Times New Roman字体。

5.文档统一用2003-2007版word格式。

6.具体请见模板。

北京10个常绿树种颗粒物吸附能力研究

学号班级姓名

摘要：大气中颗粒物PM（particulate matter）不仅造成环境污染，还对人体造成严重的危害。城市绿色植物作为大气过滤器，能够有效地提高城市空气质量，保护人体健康。因此了解不同树种对空气颗粒物的吸附滞纳作用是必要的。以北京植物园10种常绿植被为研究对象，应用空气气溶胶再发生器（QRJZFSQ-I）测定了北京市常见6种乔木和4种灌木叶片对空气总悬浮颗粒物（TSP）、PM10、PM2.5和PM1.0的吸附能力。结果表明：①不同树种叶片表面附着颗粒物的能力差异明显，最高的是雪松（Cedrus deodara）和油松（Pinus tabulaeformis），吸附量分别是（18.95±0.71）μg·cm-2和（14.61±0.78）μg·cm-2，冷杉（Abies fabri）最小，为8.02±0.4 μg·cm-2；

②不同树种叶片单位面积对不同颗粒物的附着能力也存在差异，附着PM10能力最强的是油松和雪松，附着PM2.5能力最强的是雪松、铺地柏（Juniperus procumbens）、龙柏（Juniperus chinensis cv. kaizuka）和油松，附着PM1.0能力最强的是雪松、铺地柏（Juniperus procumbens）、冷杉（Abies fabri）和油松；③不同月份叶片上附着的各粒级颗粒物（PM10、PM2.5）占TSP的比例不同。其中PM10在4~6月之间主要表现两种变化趋势，一是先上升后下降，主要为灌木树种；二是逐渐上升，主要的树种是乔木树种。而PM2.5则没有这种明显的变化趋势。

Experiments of Selection Medium Component and Fertilization on Container Seedling of Ficus concinns Miq. var. subsessilis

Corner1

学号班级姓名

Abstract: Ficus concinna Miq. var.subsessilis Corner，a variant of Ficus concinna Miq., is a very important tree species in the tropic and subtropical area and is officially made the city tree of Wenzhou, which is mainly distributed in the south of Zhejiang province, Guangxi and Guangdong province. It is one of most excellent tree species for city afforestation and coastal shelter belt because of its cold and salty resistances. Therefore, developing and exploiting Ficus concinna Miq. var.subsessilis Corner will have a promising market prospect. However the generalization of the species is to some extent restricted by the shortage of bare root seedlings and low survival rate of afforestation, but a solution can be made by the development of container seedlings which provides a shortcut for improving surviva2l rate of afforestation.

With such basic materials as peat soil, pearlite, wood chip and rice husks which are easily available from local waste material, the suitable media for growing container seedlings of Ficus concinna Miq. var.subsessilis was selected in this paper base on proper experimental design. Meanwhile, the fertilization technology was studied in order to figure out the best fertilization formula. The main results of this study are as follows.