Scan the QR code with wechat < / P > < p > to share with friends and circle of friends < / P > < p > Xinhua news agency, Beijing, March 30 (reporter Dong Ruifeng) < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E6%B2%99%E5%B0%98%E6%9A%B4 "> why has the frequency of sandstorm increased in recent years? Why do locusts spread to many countries? Scientists believe that this is closely related to the fluctuation of global arid ecosystem, and have formulated a scientific plan for observation, research and management demonstration. < p > < p > Global dep released the Chinese version of global arid ecosystem science plan and the special issue of international academic journals on the 29th, announcing the overall objectives, research topics, key issues and organizational structure of the scientific plan_ blank" href=" https://news.163.com/news/search?keyword=%E5%B9%B2%E6%97%B1%E5%8C%BA "> provide roadmap and cooperation platform for the research and management of < / a > in arid areas. < / P > < p > project chief scientist, academician of Chinese Academy of Sciences < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E5%82%85%E4%BC%AF%E6%9D%B0 "> Fu Bojie < / a > said that at present, there is a relatively lack of long-term observation and experimental data for the socio ecological system in arid areas, and the research foundation is relatively weak. Especially in developing countries, there are still many scientific problems and management bottlenecks to be solved, so it is urgent to carry out systematic and comprehensive monitoring, evaluation and management. "Taking sandstorm as an example, it is closely related to land degradation." "Although this project does not trace the source of every sandstorm, it will focus on land degradation, contribute to ecosystem recovery and reduce the sandstorm from the source," Fu said < / P > < p > arid areas account for 41% of the earth's land area, supporting about 38% of the world's population. The main types of ecosystems include sparse grassland, shrub, grassland and desert. Due to water shortage, drought and fragile ecosystem, it is very sensitive to extreme climate events and human activities, which brings many challenges to local economic development and livelihood sustainability. < / P > < p > in < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E4%B8%AD%E7%A7%91%E9%99%A2 "> with the support of the international science program of Chinese Academy of Sciences, Chinese scholars led the international science program of global arid ecosystem in 2017. < p > < p > according to Fu Bojie, scientists at home and abroad have jointly formulated the basic variables for observation and research in global arid areas, and carried out case studies on typical problems of arid ecosystem protection and social development in various regions, such as < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E9%BB%84%E5%9C%9F%E9%AB%98%E5%8E%9F "> vegetation restoration in the Loess Plateau, emergency drought events in the Great Plains of the central United States, natural resource management in the Sahel region of Africa, and vegetation dynamics in the Mediterranean region.

next phase, one belt, one road, the international scientific organization alliance (ANSO) will also be launched in the next year. The scientific plan will also conduct more in-depth scientific research and policy dialogue in different arid regions of the world, and establish a database of drought ecosystems and a case management database.