After a light rain, the air at the foot of Qilian Mountain is fresh and green. In Xinba Town, Gaotai County, Zhangye City, Gansu Province, the mountains are surrounded by snow on the top of the mountain, the trees at the foot of the mountain are verdant, and the green crops grow in knots. Against the blue sky and white clouds, it looks like an intoxicating picture. Photographer Wang will record the full view of the scenery in the camera and sighed, "my hometown is getting greener and more beautiful!" Located at the intersection of Qinghai Tibet Plateau, Loess Plateau and Inner Mongolia Plateau, the majestic Qilian Mountain is an important ecological function area in China, an important water conservation area for the three inland rivers in Hexi region of Gansu Province, and an important biological germplasm resource bank and an important channel for wildlife migration in Northwest China. "As a huge and complete ecosystem, Qilian Mountains and Hexi Oasis together constitute a defense line to prevent the southern invasion of Badain Jaran Desert and Tengger Desert, and an important barrier to the ecological security of the Qinghai Tibet Plateau and even the three river sources of the 'Chinese water tower'." Said Li Ding, a professor at the school of resources and environment of Lanzhou University. "With more wild animals, the ecological environment is better" "At the end of June, I went to Yangge village for patrol. On the way back, I saw twoorthree groups of rock sheep drinking water leisurely along the Heihe River. Over the years, there have been more wild animals, especially rare and endangered wild animals, which shows that the ecology of Qilian Mountain is getting better and better!" LAN bin, an ecological management and protection worker in Kangle Town, Sunan County, Zhangye City, told reporters. The continuous improvement of the ecological environment in Qilian Mountain is the common feeling of all people here. "The number of wild animal populations has indeed increased, and some endangered species, such as musk deer, have reappeared." Said Cao Wei, head of the Zhangye Ecological Environment Bureau office. Cao Wei has been engaged in ecological and environmental protection for many years, and has witnessed the restoration of Qilian Mountains for many years, which has restored the tranquility and peace of the past. An assessment of the rectification of the Qilian Mountains' ecological environment problems and the changes in the ecological environment by the Chinese Academy of Sciences showed that the Qilian Mountains' rectification has achieved remarkable results, and the quality of the ecological environment has increased steadily and continued to improve. The grassland area has increased significantly, and the vegetation growth condition has improved as a whole. Vegetation index, vegetation coverage and vegetation productivity showed a significant upward trend. Lanzhou University's investigation of the ecological protection status of the Qilian Mountain reserve (2017-2019) also showed that the distribution of "king of snow mountains" snow leopards was found in 15 of the 22 protection stations in the Qilian Mountain reserve, and the number of snow leopards ranged from 350 to 500. Rare species that have been difficult to trace for many years have been found frequently. The population of large wild animals such as Tibetan wild ass, white lipped deer, red deer, rock sheep, roe deer, jackals and so on has increased significantly, and the population of rare birds such as spotted tailed hazelnut chicken, pheasant quail, blue pheasant, blood pheasant, light bellied snow chicken, dark bellied snow chicken and so on is also recovering rapidly. "Human disturbance in nature reserves has been greatly reduced" Behind these changes is the continuous efforts of the Gansu provincial Party committee and government and cities in the Qilian Mountains. In recent years, Gansu Province has insisted on combining the remediation of ecological environmental problems with the improvement of the construction level of ecological civilization, innovating the means and mechanisms of ecological protection supervision, and focusing on the construction of a long-term mechanism for ecological environmental protection. The ecological environmental protection of Qilian Mountain has achieved remarkable results. —— The 144 mining rights in the Qilian Mountain reserve have been fully withdrawn and compensated through three ways: cancellation, deduction and compensation. The ecological environment has been restored in good condition, and the restoration and management of historical ownerless mines have been completed. —— 42 hydropower stations have completed classified disposal, the hydropower stations that have been shut down and withdrawn have completed ecological restoration and governance, and the hydropower stations that have been operated in a standardized manner have achieved online monitoring and early warning management to ensure the ecological base flow of the river. —— All 25 tourism development projects have completed rectification and ecological environment restoration through differentiated rectification. "All grazing livestock in the traditional shared grazing area have been withdrawn and grazing prohibition management has been realized, and ecological migration in the reserve has been actively and steadily promoted to effectively alleviate the impact and disturbance of human activities on the reserve." Yang Jianwu, Secretary of the Party group and director of the Department of ecological environment of Gansu Province, introduced. Today, the importance of Qilian mountain ecological environment protection has reached a high consensus among Gansu Party committees and governments at all levels and the public. "Environmental violations have been effectively curbed, and after the human disturbance in the nature reserve has been greatly reduced, the ecological restoration and treatment area is verdant, showing a good picture of recuperation." Yang Jianwu said. "Human beings love trees, and trees protect human beings" West of the Yellow River and north of Qilian Mountains, Hexi Corridor has a prominent ecological position. Gulang County of Wuwei city is located at the eastern end of Hexi Corridor and the northern foot of Qilian Mountain. It is one of the key desertification monitoring counties in China. The northern sand line is 132 kilometers long, with more than 20 key sand vents, and the desertification area is 2.389 million mu. Guo Xi, the third-generation sand control man and keeper of babusha forest farm, left for the forest farm at 5 a.m. and was busy watering the newly planted seedlings all day until 6 p.m. "These small seedlings have just been planted and are still fragile, so they need special attention." Looking at the immature seedlings in front of him, Guo Xi's eyes were full of love. Babusha forest farm is located in the southern edge of the Tengger Desert, and is one of the largest sand storms in Gulang county. The local people laughed and said, "eight steps of sand, eight steps of sand, eight steps of sand out of the door.". In the past, sand and wind raged here, "autumn wind blighted the fields and spring wind killed the cattle". The production and life of more than 10 villages, more than 20000 mu of fertile fields and more than 30000 people around were seriously affected. In the early 1980s, six local old men pressed their fingerprints on the contract of contracting the desert and swore to exchange white hair for oasis. Over the past 40 years, the descendants of the "six old men" took over the shovel of their predecessors, led the masses, and guarded the railways, national highways, farmland and immigration areas here. Now entering babusha forest farm in Gulang County, Caragana korshinskii and citronella grass snuggle up on both sides of huanlin Road, and clusters of Haloxylon ammodendron, red willow and flower sticks are dotted with green in the desert. Babusha is no longer the desolate scene of the past. The encouragement of the general secretary made the staff of babusha forest farm more confident - "we must stick to it because we are needed and understood". "I'm the third generation of desertification control people. I'm glad to see that the groups involved in desertification prevention and control have been growing over the years." Guo Xi said that the county organized the whole people to suppress sand and plant trees every year, and everyone participated in the team of wind prevention and sand fixation. Nowadays, in Gulang County, apple trees, apricot trees and Sophora japonica trees are planted in front of and behind every house. "Where there are people, there are trees. Human beings love trees, and trees also protect human beings." Guo Xi said. Inspired by the spirit of "six old men" in babusha forest farm, Gulang county has completed 1.7923 million mu of artificial afforestation, 1.0625 million mu of degraded grassland treatment, and 255300 mu of returning farmland to forest and grassland. At the foot of Qilian Mountain, the concept of green development has been deeply rooted in the hearts of the people, and advanced models of ecological environment protection and governance have emerged, such as Shi Shuzhu, the hero of sand control, Wang Yinji, and the advanced group of three generations of "six old men" in babusha forest farm, a model of the times. Zhangye City has won the national demonstration city of ecological civilization construction, and the babusha forest farm in Gulang county and Linze County in Zhangye City have won the title of "green water and green mountains are Jinshan and Yinshan" practice and innovation base. "In the past, my grandfather and his family started to control desertification and afforestation with a few shovels. Now we have more advanced technical means, more solid material security, and broader social participation. I believe that as long as we persevere, this desert will eventually become a forest sea." Guo Xi looked at the green in the distance and said with confidence. (outlook new era)