Chengdu Qingya paper is engaged in Bamboo and Bagasse pulp raw materials to produce Bamboo Jumbo rolls, Bamboo toilet paper etc control with extraordinary efficiency.
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Chengdu Qingya paper is engaged in Bamboo and Bagasse pulp raw materials to produce Bamboo Jumbo rolls, Bamboo toilet paper etc control with extraordinary efficiency.
Impact and contribution of bamboo to the ecological environment
Geophysicists say: forest are the lungs of the earth, anthropologists say: forest is the cradle of human beings. The earth can not be without forests, and human beings can not be without forests. Green forests are closely related to the earth and mankind. According to the world greenpeace released the results of a survey shows that the inevitable result of the forest was destroyed is: 90% of the land will disappear, 90% of the world's fresh water will flow into the sea, human will appear serious water shortage crisis, wind speed will increase by 70%, the solar heat, the earth ecological damage, human will be difficult to survive.
Forests grow to isolate and store carbon from the atmosphere, helping to regulate the global carbon cycle and mitigate climate change. A healthy forest ecosystem can produce and protect soil, stabilize river flow and water runoff. —— To prevent land degradation and desertification, and reduce natural disasters such as drought, flood and landslides
According to the United Nations Intergovernmental Panel on Climate Change (IPCC), the current global average temperature is up about 1℃ from before the industrial Revolution, and if the surface temperature is allowed to continue to rise, it will bring catastrophic climate change to the earth. According to statistics, 60% to 80% of the greenhouse gases released come from urban emissions, of which carbon dioxide accounts for 75%, which is an important reason for the direct rise of global ground temperature. These environmental problems have prompted governments to take a series of measures to conserve energy and reduce emissions and control greenhouse gas emissions. Among them, increasing the carbon sink is an internationally recognized and effective means. As the largest carbon reservoir in the terrestrial ecosystem, the forest can effectively reduce the amount of carbon dioxide in the atmosphere, and has a very positive effect on alleviating the greenhouse effect, which has attracted high global attention. As a bamboo resource with fast biomass synthesis speed, diverse types and rich resources, people have gradually paid more attention to it. Its efficient carbon fixation capacity has important advantages in improving the living environment and building an ecological city.
1. Bamboo forest resources are an important part of forest resources, and their carbon sequestration capacity is far more than ordinary trees. In the case of bamboo bamboo, 1 hm2The annual carbon sequestration of bamboo bamboo forest is 5.09 t, which is 1.46 times that of Chinese fir and 1.33 times that of tropical rain forest. The carbon reserve of bamboo forest ecosystem in China is about 780.2 million t, and 13.4 million t carbon sequestration is transferred to the carbon bank of bamboo products every year, which indicates that the research and application of carbon sink in bamboo forest is of great value for offsetting carbon emissions.
For trees, the storage of carbon dioxide will continue to increase with the age of the trees. The carbon absorption rate at the beginning of growth is very fast, and after entering the mature period, although the carbon storage is still increasing, the rate of carbon absorption gradually decreases. Therefore, the carbon uptake capacity of older trees is weaker than that of younger trees. Different from ordinary trees, bamboo is recognized as one of the fastest growing plants in the world. The fastest time from bamboo shoots is 45-60 days. Bamboo grows fast, high photosynthetic efficiency, such as bamboo generally in 4~6 years is the mature material, is the best material period, carbon reserves also quickly reached the maximum value,
2. Characteristics and characteristics of carbon sequestration in bamboo forests
Coal, oil, natural gas and damaged forests are all carbon sources that emit carbon dioxide into the atmosphere, which is one-way and will not be absorbed again. Under the premise of reasonable management, forest and bamboo forest have two functions of carbon dioxide emission and absorption at the same time, which is two-way circulation. The bamboo forest in the growing state absorbs carbon dioxide through photosynthesis and quickly synthesized polymer compounds for storage in bamboo. After cutting and processing, mature materials are prepared into buildings, furniture and other products. The carbon dioxide is stored in the products and discharged into the atmosphere again after the products are discarded. Therefore, carbon sink research has been committed to improving forest cultivation technology and improving the quality of wood products, that is, to increase carbon reserves and reduce carbon emissions. By every 6 tons of carbon dioxide emissions per one ton of bamboo,
3. Changes of carbon reserves in bamboo forests over time
(At 1 hm2For example) Carbon storage capacity refers to the ability of bamboo forests to absorb and store carbon dioxide. For trees, the storage of carbon dioxide will continue to increase with the age of the trees. The carbon absorption rate at the beginning of growth is very fast, and after entering the mature period, although the carbon storage is still increasing, the rate of carbon absorption gradually decreases. Therefore, the carbon uptake capacity of older trees is weaker than that of younger trees. Different from ordinary trees, bamboo has fast growth rate and high photosynthetic efficiency. For example, bamboo is generally mature material in 4 to 6 years, which is the best period of material, and the carbon reserves quickly reach the maximum value, as shown in the black lines in Figure 2. According to the growth law of bamboo forest, the mature materials in the forest should be cut in time, just like the crops must be harvested when they mature, the annual cutting amount is 20%~35% (Figure 3), and the frequent cutting is often new. As the bamboo forest updates, the carbon reserves slowly decline and eventually remain in a relatively stable state.
