The hottest snow and ice melting forestry faces a

2022-09-19
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Snow melting and ice melting forestry is facing a long-term exam

just entering 2008, a sudden and catastrophic freezing disaster has given us a heavy warning in an overwhelming way. When people count the disaster loss figures, 7: hydraulic cylinders and control valves: hydraulic cylinders are specially customized, and they all sigh for this huge economic single of hundreds of billions of yuan. However, when all walks of life announced the victory of the anti ice disaster relief, and when we looked at the distant mountains and the fallen forests, it is not difficult to find that the structural trauma caused by this disaster to China's ecological environment is more serious and far-reaching

China's forestry, which takes ecological construction as its own responsibility, will face a long-term examination, which also affects the hearts of the representatives and members who are attending the two sessions in Beijing

the freezing disaster has had a far-reaching impact on China's ecology

the State Forestry Administration commissioned 26 experts and professors to form three expert working groups to conduct in-depth research and investigation in the disaster areas. Yin Weilun, head of the expert group who returned to Beijing from the disaster area, member of the National Committee of the Chinese people's Political Consultative Conference, academician of the Chinese Academy of engineering and President of Beijing Forestry University, said: this ice and snow disaster has caused great losses to the forestry in southern China. Zhong Guangliang also said that the disaster situation is shocking

the press conference held by the State Council Office on February 19 released a set of figures on the impact of the rain and snow freeze disaster on Forestry: in the rain and snow freeze, the affected forest area accounts for 1/10 of the total forest area of the country. This figure exceeds the total area of the conversion of farmland to forests project, which is equivalent to the increased forest area in the national five-year plan. It will have a serious impact on China's ecology, and will create great difficulties for the smooth realization of the national forest coverage rate of 20% in 2010

before the two sessions, Chen Qiuhua, deputy to the National People's Congress and director of the forestry bureau of Guangxi Zhuang Autonomous Region, was interviewed. He said: the direct economic loss of Guangxi forestry system is 21.575 billion yuan, and the impact on forestry and ecological construction in the coming period also needs attention

chenqiuhua told that the forest damage in the disaster areas in Guangxi is very serious, especially in high-altitude areas. The trunk of the forest is broken, even uprooted, and moso bamboo is broken and collapsed in a large area. The upper one is the active pointer layer. The tree crown no longer exists, and the lower forest also has the phenomenon of trunk and branch breaking. The herb layer will also die in a large area. The vertical structure of the forest has changed greatly, and the biomass has been greatly reduced, The carbon sequestration capacity of forests has been seriously reduced, and the carbon sink function has been affected. The forest environment has changed dramatically, and the biodiversity of the forest will also change accordingly. In this regard, Guangxi forestry experts have expressed considerable concern

Pan Dalin, vice chairman of the environmental and Resource Protection Committee of the Guangdong Provincial People's Congress, said: a report on the damage of Nanling forestry will be formed and submitted to the government immediately, and relevant departments will be urged to take action in a timely manner. In this snow disaster, the forest resources in Nanling National Nature Reserve, Guangdong Province, between 500 and 1300 meters above sea level have been hit integrally and destructively. According to preliminary estimates of experts, it will take at least 30 to 40 years for the whole ecosystem of Nanling to recover from the situation before the snow disaster

Chenzhou City, Hunan Province, which is regarded as the ecological lung of the Pan Pearl River Delta, was covered with the smell of camphor wood after a large number of camphor trees were crushed by heavy snow on New Year's Eve. The snow disaster caused serious damage to the forest ecosystem in Chenzhou, which will be reversed for at least 20 years, and it will take 30 to 50 years for some areas to recover. According to preliminary estimates of experts, Hunan Province only needs 1.5 billion seedlings this spring. Experts said that if large areas of trees are damaged and cannot be replanted in time this spring, it is very likely to cause serious disasters such as debris flow and soil erosion when the flood season comes this summer

member Yin Weilun suggested that a major national ecological restoration project should be launched

the hidden dangers of forest secondary disasters increased after the snow disaster

the hidden dangers of forest secondary disasters increased after the snow disaster. Yin Weilun said. In this regard, Zhang Hong, a member of the National Committee of the Chinese people's Political Consultative Conference from Chongqing, expressed the same view: compared with Hunan and other provinces with heavy disaster, the disaster in Chongqing is relatively light, but the impact on forestry ecology can not be ignored. The snow pressure wood formed after the disaster suddenly increased the accumulation under the forest, which brought more hidden dangers to forest fire prevention. According to the prediction of Chongqing Meteorological Observatory, the summer drought in Chongqing came earlier this year, and the temperature in eastern Sichuan may reach 41 ℃, which is similar to the temperature in Chongqing in the summer of 2006. Coupled with the Tomb Sweeping Day and summer drought this year, it has increased the difficulty of forestry fire prevention in Chongqing after the disaster. Since February this year, compared with the same period in previous years, the number of fire alarms has increased sharply. The forest defense station of Chongqing forestry bureau predicts that there may be outbreaks of forest diseases and pests this year, such as pine wood nematodes, bamboo grasshoppers, etc

the snow disaster also has a certain impact on the forestry in the Three Gorges Reservoir area, but the local government is closely observing how much the ecological impact is. Zhang Hong said: the snow disaster has little impact on the main coniferous trees in the reservoir area, such as Pinus massoniana, and has a greater impact on broad-leaved forests. Because the local forest density is relatively large and there are more artificial pure forests, masson pine is mainly planted in the barren land. The forests of Chongqing state-owned forest farms are not covered by forest fire insurance, and the local governments cannot afford the funds. At present, Chongqing forestry bureau is looking for one to two pilot counties, and then cooperate with the people's Insurance Company of China on forest fire insurance

as for the secondary forest disasters after the snow disaster, representative Chen Qiuhua also expressed the same concern: the existence of a large number of fallen trees, broken branches and forest dead objects in the disaster area will provide a good breeding environment for termites, stem borers, etc., and the surviving forest plants will not grow well due to the influence of freezing, which will also provide favorable conditions for the possible outbreak of forest diseases and pests. In a certain period of time in the future, the probability of occurrence of pine caterpillars and other large areas will be greatly increased, and its harm will be more serious. A large number of forest combustibles have accumulated, and the biological fire prevention forest belt has been seriously destroyed. The situation of forest fire prevention and forest pest control in the disaster area is more serious

at the working group meeting of the forest fire prevention expert group of the national forest fire prevention headquarters held on February 26, experts pointed out that at present, the fuel load on the surface of the affected forests in southern China has increased by 2-10 times compared with the usual amount. Compared with previous years, the forest fire risk rating in southern China this spring will be higher by 1-2 levels; The northern region is severely dry, so forest fire prevention must be prepared for simultaneous operations on the north and South lines

the water source has also become an indirect victim after the snow disaster

the popularity of the Lijiang River in Guangxi is greater than Guilin to a certain extent, and even greater than Nanning, the capital of Guangxi Province. In this snow disaster, the water of the Lijiang River is likely to become an indirect victim

representative Chen Qiuhua said: Lingchuan, Xing'an, Lingui, Guanyang and other counties in the upper reaches of the Lijiang River are the hardest hit areas of the rain and snow freeze disaster, especially the Maoer mountain area at the source of the Lijiang River, where the forest is extremely damaged, and the forest ecosystem is seriously damaged, which is difficult to recover in the near future. These will lead to a significant reduction in the ecological functions of the forest, such as water conservation, water and soil conservation, which will show that the rain falls and flows immediately, The river rises quickly when there is rain, and drops rapidly when there is no rain, and the water level is extremely unstable; The sediment content increases and the water quality becomes muddy. The water of Lijiang River, the best in the world, may be the indirect victim of this rain and snow freeze disaster. As for the impact degree, duration, or other impacts, further investigation, analysis and long-term monitoring are needed

linjinxing, member of the CPPCC National Committee and director of the development center of the Institute of Botany, Chinese Academy of Sciences, said: the snow disaster came suddenly and had a great impact on forestry. Forestry recovery needs a long cycle. As an individual, I suggest that more attention should be paid to a variety of mixed forests in post disaster recovery. The snow disaster will also have a certain impact on the supply of forest products. In addition, the snow disaster will also have a great impact on the ongoing forest reform

Wu Hong, member of the National Committee of the Chinese people's Political Consultative Conference and deputy director of the Forestry Department of Zhejiang Province, said: the freezing disaster of rain and snow has a great impact on the forestry of Zhejiang Province. On the mountains with an altitude of more than 1000 meters, the forests are almost destructively damaged. The disaster will also affect the Qiantang River water source conservation forest, and the trees with a breast height diameter of 30 cm have been broken

the direct economic loss caused by the rain and snow freeze disaster to China's forestry is only intuitive, but the indirect loss caused by the ice and snow disaster is not only the forest itself, but also the ecological environment itself

member Yin Weilun said: the direct and potential impact of ice and snow disasters on the regional ecological environment is inevitable, and it is urgent to take effective measures to protect the formed forest environment to the greatest extent, while restoring the structure and functions of the forest ecosystem, including the establishment of mixed forest ecosystem, the establishment of improved species breeding base, the careful use of exotic tree species, the combination of artificial promotion and natural recovery, and the protection of land cover, Prevent soil erosion and strengthen the monitoring and patrol of wildlife and forest diseases and pests

Lin jin5 The lifting rack and oil cup of fatigue testing machine should often be added with lubricating oil star. The committee member said in particular: Although I have not specially written proposals related to forestry construction during the two sessions, I believe that in the construction of ecological civilization, we cannot do without forestry, and the state should strengthen the status of forestry institutions

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