<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
          Global EditionASIA 中文雙語Fran?ais
          China
          Home / China / Environment

          How a desert branched out to become Beijing's guardian

          By ZHAO XU and LEI LEI | China Daily | Updated: 2017-08-04 08:56
          Share
          Share - WeChat

          A woman takes a selfie at Liangbingtai, a famous peak at Saihanba Forest Park in Hebei province.[Photo by Zou Hong/China Daily]

          Breakthrough

          In the early 1960s, the low survival rate of tree seedlings threatened the existence of the forest, but things began to improve in the spring of 1964.

          "We wanted to make one last attempt," said Zhang Xing, 81, who has spent almost his entire life at Saihanba, as he stood on the fringes of a hoof-shaped patch of land in the northwest of the forest looking at the conifers that are now about 20 meters high. The trees, covering an area of 34 hectares, were all planted during that breakthrough spring.

          "Two hundred people were in the mountains for 40 days continuously, preparing the earth for the planting of the seedlings, which took just two days," he recalled. "The trees were planted by specially adapted machines imported from what was then the Soviet Union. The roar of the machines mixed with the noise of the wind, and the dry earth, ploughed open by the machines, was swept up by the wind. The whole area was a battleground."

          No battleground is without casualties.

          "It was mid-April, but deep in the mountains winter was still battling for its last stronghold. We put on everything available, from cotton-padded overcoats to felt leg wraps. Ice formed on our clothes. It made a clunking sound with every move we made, turning our clothes into armor under which we sweated," he said. "Many of us, me included, developed severe rheumatism as a result."

          When July arrived, the workers were overjoyed to discover a soft carpet of green shoots. That year, the survival rate topped 90 percent.

          Chen Zhiqing, 45, who arrived in Saihanba in 1994, is the deputy director of the forest's management team. "The reason they failed in 1962 and '63 is because the tree seedlings they used were imported from other parts of China, especially the cold northeast. Saihanba's climate is so extreme that almost no 'outsider' could possibly survive. Moreover, long-distance transportation also resulted in the seedlings being damaged due to either severe loss of water or heat trapped inside the boxes," he said. "The seedlings planted in 1964 were all grown locally and had sturdy stems and robust roots.

          "The cultivation method was changed, too: Before, mindful of the strong winds and scorching summer sun, the seedlings were put under shade. But no protected plant species could be expected to take root in Saihanba," he added. "So they eventually came up with what we now call all-light seedling cultivation, whereby the young plants, although still grown with lots of attention, were exposed to the elements."

          |<< Previous 1 2 3 4 5 6 7 8 9 10 Next   >>|
          Top
          BACK TO THE TOP
          English
          Copyright 1994 - . 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: 精品中文字幕人妻一二| 亚洲禁精品一区二区三区| 777米奇色狠狠俺去啦| 精人妻无码一区二区三区| 日本高清不卡一区二区三| 国产成人免费高清激情视频| 精品无码人妻一区二区三区| 影音先锋2020色资源网| 亚洲高清揄拍自拍| 亚洲av无码精品蜜桃| 性国产vⅰdeosfree高清| 91久久天天躁狠狠躁夜夜 | 黄色av免费在线上看| 波多结野衣一区二区三区| 亚洲色大18成人网站www在线播放 人妻少妇伦在线无码专区视频 | 国产精品一区在线免费看| 无码中文字幕av免费放| 日韩区二区三区中文字幕| 精品久久人人做爽综合| 久久精品成人免费看| 狠狠爱五月丁香亚洲综| 欧美精品va在线观看| 国产精品天干天干综合网| 亚洲情A成黄在线观看动漫尤物| 国产精品一区久久人人爽| 91精品国产91久久综合桃花 | 亚洲国产精品综合久久20| 亚洲第一二三区日韩国产| 欧美喷潮最猛视频| 国产一区二区三区AV在线无码观看| 少妇久久久被弄到高潮| 久久青青草原亚洲AV无码麻豆| 任你躁国产自任一区二区三区| 四虎国产精品永久在线下载| 不卡乱辈伦在线看中文字幕| 国产成人福利在线| 四川丰满少妇无套内谢| 人妻丰满熟妞av无码区| 国产办公室秘书无码精品99| 在线观看特色大片免费视频| 成人拍拍拍无遮挡免费视频|