The new sand-fixing network and sand-fixing technology developed by the Northwest Institute of Eco-Environmental Resources, Chinese Academy of Sciences, has made significant progress in the sand prevention and sand control work in Gansu and Ningxia.
Dunhuang, Gansu Province, is home to the world’s cultural heritage Mogao Grottoes and is one of the important sources of sand and dust in the northwest. The reporter recently visited Dunhuang’s “Mother River” - seen in the upper reaches of the Danghe River. One sand-fixing net is like a block of green chessboards. In the desert, the sand dunes are firmly locked, which effectively reduces the wind and sand entering the Danghe Reservoir and provides security for Dunhuang's water security.
According to Qu Jianjun, researcher of the Northwest Institute of Ecological Environmental Resources, Chinese Academy of Sciences, Qu Jianjun, chief of the Dunhuang Gobi desert research station, introduced that the green sand-fixing net used in the upper reaches of the Danghe River was made of high-density polyethylene compared with the traditional grassland used for sand control and desertification. Cheng. 'This material is more environmentally friendly, easier to construct, cheaper to build, and has a long service life. The effect of sand control and sand consolidation is even more pronounced. 'Qu Jianjun said that this new material for sand prevention and control also solves the sand and sand disaster problem facing the Qinghai-Tibet Railway. .
A new technology called Soil Biological Crust is applied in the Ningxia Hui Autonomous Region. 'We extracted the most suitable crust microbes from algae, cicada crusts, artificially cultivated in the laboratory, made them into reagents, sprayed To form soil crusts on the sand inside the sand barriers of the grass grid to achieve sand fixation. 'Li Xinrong, researcher at the Northwest Institute of Ecological Environmental Resources, Chinese Academy of Sciences and director of the Shapotou Desert Research and Experimental Station told this reporter.
Desertification is called 'Earth Cancer'. The data shows that the area of desertified land in China accounts for about 27% of the country's land area. The prevention of sand damage and the restoration of ecology are not only the responsibility of scientific research institutions, but more and more companies are also joining the sand prevention and control team. Come.
Yang Qingli, founder of Shenzhen Xiaorun Irrigation Technology Co., Ltd., said that they have developed a nano-aperture microfluidic tube made of macromolecular semipermeable membrane material that solves the problem of desert irrigation. The microfluidic tube is buried underground and can be slow. , Evenly draining moisture, prevent water leakage, evaporation, can be directly from the ground water supply to the roots of plants 24 hours a day, so that the desert irrigation is as convenient and effective as ordinary farm irrigation. ' Yang Qingli said.
According to reports, this set of desert irrigation technology was applied to the vegetation restoration project in 2012 in the rare bird habitat in western Abu Dhabi. Under the support of irrigation technology, the ecological environment in the desert area where vegetation was severely degraded has been significantly improved. , not only grow a variety of desert plants, but also the appearance of animals such as desert insects and hares.
The results of the fifth national desertification and desertification land monitoring show that, since the area of desertification and desertification land in China has shrunk in 2004, it has maintained a 'double reduction' for 10 consecutive years.