www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Environment

Nanjing removing poplar trees with allergy-causing catkins

By Cang Wei in Nanjing | chinadaily.com.cn | Updated: 2017-11-14 11:26

Nanjing in East China's Jiangsu province is planning to remove most of its 10,000 poplar trees in an effort to eliminate fallen catkins that bother millions of people in the springtime.

Qi Peiwen, associate counsel for Nanjing Gardening and Greening Bureau, said that the poplar trees will be removed across the city in three years, including downtown and along the freeways.

"The city planted many poplar trees around the year 2000 because they were cheap, grew fast and could improve the environment in a short time," she said. "They can grow very tall in three to five years and begin to shed countless white catkins."

The white catkins, which are a part of poplar tree flowers and seeds, can cause allergic reactions in April and May. Many people across China have to wear masks to avoid breathing in the irritating pollens from poplar, willow and plane trees.

In addition, after growing for 17 years, most of the poplar trees are entering a stage of decline. "Many of their trunks have holes and fragile branches. They may cause casualties downtown if they fall down," Qi said.

Tian Runan, a professor in the gardening and plants department of Nanjing Forestry University, suggested that other kinds of trees, such as ginkgo, cedar, maple and cherry trees, should be planted to replace the poplar trees.

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 国产六区| 国产精品美女一区二区 | 国内精品久久久久久影院8f | 国产精品a人片在线观看 | 色久综合网 | 国内一级特黄女人精品片 | 亚洲韩精品欧美一区二区三区 | 国产亚洲精品一区二区在线观看 | 一级毛片国产 | 国产美女白丝袜精品_a不卡 | 久久中文亚洲国产 | 99久女女精品视频在线观看 | 久久成人免费观看草草影院 | 九九99re在线视频精品免费 | 日韩精品在线看 | 暴操美女| 台湾三级香港三级在线中文 | 中国美女牲交一级毛片 | 亚洲免费高清 | 国产日韩欧美一区二区三区综合 | 免费视频亚洲 | 免费一级毛片在线播放放视频 | 亚洲 欧美 国产 日韩 制服 bt | 高清一级毛片 | 欧美一级日韩一级 | 亚洲综合日本 | 亚洲精彩视频在线观看 | 亚洲欧美日韩综合在线一区二区三区 | 久久精品免观看国产成人 | 亚洲成人7777 | 久久久久久久99精品免费 | 日韩午夜在线观看 | 亚洲成人三级 | 91国在线视频 | 成人在线视频免费 | 俄罗斯一级毛片免费播放 | 欧美黑寡妇特a级做爰 | 中文字幕亚洲综合久久男男 | 狠狠色狠狠色综合日日32 | 色射网 | 国产乱码精品一区二区三区四川人 |