<blockquote id="pl83f"><p id="pl83f"></p></blockquote>
<s id="pl83f"><li id="pl83f"></li></s>

      
      
      <sub id="pl83f"><rt id="pl83f"></rt></sub>

        <blockquote id="pl83f"><p id="pl83f"></p></blockquote>
        <sub id="pl83f"><rt id="pl83f"></rt></sub>
        女人的天堂av在线播放,3d动漫精品一区二区三区,伦精品一区二区三区视频,国产成人av在线影院无毒,亚洲成av人片天堂网老年人,最新国产精品剧情在线ss,视频一区无码中出在线,无码国产精品久久一区免费

        Beijing strengthens efforts on old tree protection

        Source: Xinhua| 2019-07-22 18:30:21|Editor: Yurou
        Video PlayerClose

        Photo taken on Sept. 28, 2007 shows that people are doing exercises beside the ancient trees in the Temple of Heaven in Beijing. The park held an ancient cypress culture exhibition to raise the public awareness of protecting ancient trees.(Xinhua/Lu Xin)

        BEIJING, July 22 (Xinhua) -- At the foot of Beijing's Western Hills, Lingguang Temple (Temple of Divine Light) always draws crowds with its sacred Buddha's tooth relic. But the 1,200-year-old cultural heritage site also boasts a few "living treasures" -- trees.

        This year, Beijing has for the first time launched a government fund to protect trees that have grown in the capital city for over 100 years.

        Two ginkgoes and two pagoda trees at the temple became the first beneficiaries of the project, which was organized by the Beijing Afforestation Fund under the municipal forestry and parks bureau.

        Yang Shutian, director of the fund, said that old trees can be seen as "living relics," and keeping them healthy was also "part of the work to protect and carry forward the city's history."

        In April, a group of tree experts carried out a comprehensive examination of the four old trees, which were found to be very weak, on the verge of death. They soon undertook a series of rescue efforts such as filling holes, controlling pests, watering and fertilizing over the next two months. The trees are now stronger and well monitored.

        According to Yang, more old trees in the city will be safeguarded through the project. It will call on more enterprises, organizations and individuals at home and abroad to donate money and materials to make up the shortage of governmental investment.

        "The old trees have witnessed the city's development and played a key role in improving the city's environment. To make them healthy is our collective duty," Yang said.

        Beijing has a large number of old trees. A survey by the Beijing forestry department in 2017 showed that the city had about 40,000 trees aged more than one century, of which more than 6,100 were aged over 300 years with the longest-living 3,000 years old, almost as old as the city itself. Nearly half of these trees are distributed in historical blocks and ancient gardens.

        However, about 9,000 old trees have become endangered, due to environmental changes, natural disasters, attacks from pests and human destruction.

        Some trees showed decreased abilities to absorb nutrients and to regenerate, while others were grown in poorer soil conditions. In addition, air pollution and declining populations of natural predators against pests have also weakened them.

        "Compared with ordinary trees, the protection of old trees requires more money, procedures and technologies," said a tree expert of the project.

        According to the local forestry department, the annual protection cost for an old tree is between 900 yuan and 1,800 yuan. But extra efforts to rescue trees in severe conditions may cost more than 20,000 yuan a year.

        In recent years, the Beijing forestry department has strengthened efforts on scientific research and popularization of old tree protection.

        It has used advanced facilities including GPS and laser locators to provide accurate positions of the city's old trees. Local research institutes have bred more than 4,000 seedlings from old trees with good genes.

        In addition, an adoption list of the city's 697 old trees was published earlier this year, encouraging the public to adopt and take care of old trees. Most of them are cypresses, pines and pagoda trees distributed in downtown Beijing.

        KEY WORDS:
        EXPLORE XINHUANET
        010020070750000000000000011100001382480661
        主站蜘蛛池模板: 国产三级+在线播放| 亚洲另类激情专区小说婷婷久| 亚洲日本欧洲二区精品 | 国产精品福利一区二区久久| 国产精品大白天新婚身材 | A级日本乱理伦片免费入口| 99久久精品费精品国产一区二| 丁香婷婷综合激情五月色| 天堂久久久久VA久久久久| 亚洲欧美日韩色图| 国产乱码日韩精品一区二区| 日韩精品成人网页视频在线| 日本japanese 30成熟| 成人精品日韩专区在线观看| 亚洲区福利视频免费看| 国产人成亚洲第一网站在线播放 | 成人免费A级毛片无码网站入口| 中文字幕在线日韩| 中国CHINA体内裑精亚洲日本| 两个人看的www免费| 亚洲人成网站在线播放动漫| 把女人弄爽大黄A大片片| 在线观看特色大片免费视频| 亚洲精品一品二品av| 老熟妇乱子交视频一区| 欧美精品在线观看视频| 国产成人一区二区三区免费| 激情成人综合网| 九九热在线观看视频精品| 天天躁日日躁狠狠躁中文字幕| 国产精品国产精品偷麻豆| 波多野结系列18部无码观看AV| 少妇搡bbbb搡| 99久久激情国产精品| av天堂免费在线观看| 粉嫩蜜臀av一区二区三区| 日本亚洲一区二区精品| 国产乱子伦精品免费视频| 欧美巨大极度另类| 又大又硬又爽免费视频| 久久国产精品波多野结衣|