亚洲аv天堂无码,久久aⅴ无码一区二区三区,96免费精品视频在线观看,国产2021精品视频免费播放,国产喷水在线观看,奇米影视久久777中文字幕 ,日韩在线免费,91spa国产无码

      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: 亚洲午夜私人影院在线观看| 精品国产69亚洲一区二区三区| 人妖另类综合视频网站| 国产成人亚洲综合小说区| 插鸡网站在线播放免费观看| 日本妇人成熟免费中文字幕| 亚洲AV秘 无码一区二区在线| 在线视频中文字幕二区| 亚洲嫩草影院久久精品| 久久久噜噜噜久久中文字幕色伊伊| 无码精品国产d在线观看| 在线观看国产精品自拍| 国产亚洲人成在线影院| 丁香九月综合激情| 亚洲国产精品热久久| 国产美女流白浆的免费视频| 国产精品一区成人亚洲| 人妻AV无码一区二区三区奥田咲| 丁香啪啪综合成人亚洲| 免费无码av片在线观看中文| 午夜日韩视频在线观看| 国产成人av在线影院无毒| 久女女热精品视频在线观看| 欧美性生 活18~19| 狠狠色综合久久狠狠色综合| 厦门市| 韩国主播av福利一区二区| 欧美人禽zozo动人物杂交 | 虎白女粉嫩尤物福利视频 | 美女胸又www又黄的网站| 精品少妇人妻成人一区二区| 一区二区三区蜜桃在线视频| 亚洲精品码中文在线观看 | 亚洲第一黄色网址| 久草久热这里只有精品| 亚州AV成人无码久久精品| 成人影院免费观看在线播放视频| 亚洲精品久久久久久婷婷| 东辽县| 曰本亚洲欧洲色a在线| 加勒比在线中文字幕一区二区|