无码少妇一区二区三区免费,妓院一钑片免看黄大片,国语自产视频在线,亚洲AV成人无码国产一区二区,激情久久综合精品久久人妻,日韩免费毛片,综合成人亚洲网友偷自拍,国内自拍视频在线观看,欧美熟妇性xxxx交潮喷,国产成人精品一区二免费网站

Profile: Chinese botanist opens plant "bank" in desert

Source: Xinhua| 2019-02-12 19:41:51|Editor: mmm
Video PlayerClose

URUMQI, Feb. 12 (Xinhua) -- Stunning desert, sweet grapes and scorching heat make Turpan an ideal place for curious travelers and even automakers conducting heat exposure experiments.

However, botanist Pan Borong came to the city in northwest China's Xinjiang Uygur Autonomous Region for a special purpose -- opening a plant "bank" in the desert.

"If a plant can survive in extreme conditions such as temperature as high as 50 degrees Celsius, frequent sandstorms and drought, it can survive anywhere," said Pan, a retired researcher from the Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences.

Pan and his colleagues came to Turpan in 1972 and were assigned to help five local farms that were frequently plagued by gales and sandstorms to fight desertification.

"It was an arduous start," he recalled.

To buy rice, edible oil and vegetables, researchers had to take a 20-km bike trip to the nearest county, taking turns cooking.

They lived in shabby houses with windows made of plastic and relied on kerosene lamps at night. In the spring, heavy winds would tear apart the windows, leaving dust and sand everywhere.

Despite the difficulties, researchers started introducing sand-fixation plants to Turpan. A dozen of them such as rose willows and desert poplar proved adaptable to the local climate and soil conditions.

Based on this vegetation, they decided to set up Xinjiang's first botanical garden in 1975 and named it the Turpan Eremophytes Botanic Garden.

"The arid desert area accounts for a quarter of China's land. We want to collect and introduce various drought-resistant plants in the botanical garden for further research," Pan said. "It's just like a 'bank of plants'."

To collect the plants, Pan and his colleagues ventured into distant basins and mountains. Their footprints were even left in foreign areas such as Russia, central Asian countries, Libya and Syria.

It is very likely to encounter dangers in the vast wilderness.

Sometimes to find a plant, they had to take bus, ride bikes and hop on a donkey cart to reach remote destinations. In some untraversed areas, Pan's only method to reach plants to deposit in his "bank" was to walk.

In October of 1980, Pan broke his cervical vertebra in an accident during an expedition to Kazakh Autonomous Prefecture of Yili. He stayed in the hospital for more than nine months and underwent two operations.

His decades-long endeavor has paid off. The botanic garden covers an area as large as 210 standard football fields. It is home to more than 700 species of desert plants, including nearly 100 rare and endangered species of desert plants.

China has been conducting afforestation and forest conservation programs in Xinjiang for decades to fight desertification and over-grazing in the region.

"The botanical garden is significant to the sustainable development of China's desert areas," said botanist Hong Deyuan, an academician of the Chinese Academy of Sciences.

Though Pan has retired, he has not stopped researching.

The plants from his "bank" have helped restore and reconstruct the ecosystem in the middle and lower reaches of the Tarim River, China's longest inland river, and in several polluted areas surrounding oilfields.

He and his colleagues have been bringing the desert plants and research results to broader domains. Twenty tonnes of sand-fixation plant seeds and more than 3 million saplings have been sent to other areas in and outside Xinjiang in northwest China.

"We can deposit abundant desert plants in the 'bank' and take out the 'savings' when needed," Pan said.

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011100001378159471
人人妻人人妻人人片色AV| 国产乱色国产精品播放视频| 九九热在线视频中文字幕| 偷拍网日本一区二区三区| 高中生粉嫩无套第一次| 亚洲熟女一区二区三区精品| 国产放荡对白视频在线观看| 亚洲第一视频区| 忍着娇喘人妻被中出中文字幕| 2020精品极品国产色在线观看| 国产精品午夜av福利| 国产免费一区二区三区最新不卡| 国产a在视频线精品视频下载| 亚洲一区二区三区成人在线| 青青草一区在线观看视频| 久久国产精品波多野结衣| 91国内外精品自在线播放| 亚洲欧美日韩中文v在线| 狠狠综合久久久久综合网| 成全影视大全在线观看| 91密桃精品国产91久久| 国产成人AV一区二区三区在线| 综合久久久久久综合久| 亚洲精品午夜天堂网页| 亚洲AV成人片不卡无码| 久久精品国产一区二区三区不卡 | 久久一本人碰碰人碰| 国产91精选在线观看| 18禁一区二区每日更新| 欧美交换配乱吟粗大25p| 国产精品天堂avav在线| 精品一精品国产一级毛片| 国产午夜在线观看视频| 国产精品视频熟女韵味| 天堂久久天堂av色综合| 日韩丝袜美腿在线观看| 无套内谢少妇毛片aaaa片免费| 亚洲欧美综合精品成| 在线高清免费不卡全码| 亚洲AV无码精品色欲av| 啦啦啦视频在线观看免费完整版|