Handwritten newspaper pictures to protect the environment

Environmental protection handwritten newspaper picture 0 1

Picture of handwritten newspaper protecting the environment 02

Protect the environment handwritten newspaper pictures daquan 03 Protect the environment.

First of all, afforestation provides many useful raw materials and supplies for people's life and industrial and agricultural production. For example, in terms of eating, there are all kinds of sweet and delicious fruits; Fragrant tea; There are also nourishing Ligustrum lucidum on the holly tree, delicious ginkgo and other precious medicinal materials. As far as uses are concerned, wood is needed for construction, coal mining, transportation, manufacturing vehicles, ships, ruler machines, bridge building, docks, paper making, etc. For example, to build a house with a mixed structure of 1000 square meters requires wood 130 cubic meters; Mining 1000 tons of coal requires 22 cubic meters of pit wood. In agricultural production, a large number of farm tools we use are also inseparable from wood.

Wood processing products are more popular. Wood chips can be hydrolyzed to get glucose, nocturnal emission and other substances. 50 kg sawdust can extract 37 kg syrup or 10 kg crystalline glucose, which can be used in food or medicine. Every 1 m3 of dry sawdust, 70 kg of alcohol, 4.2 kg of aldehyde, 33 m2 of dry ice 18 kg of wood board can be extracted. Every 100 kg of birch bark can extract 15 kg ~ 30 kg of birch bark tar, which can be used to prepare wood preservatives or process and extract gasoline and other substances. With 1 m3 of wood, rayon or wool can be made150kg, which is equivalent to the annual output of 7.5mu cotton field or 20 ~ 30 sheep. There are also plywood and fiberboard used for building construction and furniture, mostly left over from forest logging and wood processing? Waste? Made of. As for the tires on the vehicle, you must know that they are rubber trees, right? Born? From here.

Secondly, afforestation can provide oxygen for human beings, purify the air, beautify the environment and protect the ecological environment. We know that people breathe in oxygen and exhale carbon dioxide every day, but trees are just the opposite, and leaves are constantly photosynthetic under the sunlight? Inhale carbon dioxide and release oxygen. According to statistics, an acre of forest can absorb 67 kilograms of carbon dioxide and release 49 kilograms of oxygen every day, which is enough for 65 adults to breathe. Because forests provide shade and shelter from the wind, trees breathe and transpiration, and places with forests are warm in winter and cool in summer, so they can recuperate in summer. Trees can stick dust in the air and make the air fresh. Scientific tests show that one acre of forest can absorb 4 kilograms of toxic gas sulfur dioxide a month and 20-60 tons of dust a year. In addition, trees will produce a lot of special air in the process of breathing, which can treat some diseases and have a good effect on human body. For example, birch, poplar and juniper can secrete plant antitoxin, which can kill diphtheria, tuberculosis, typhoid and dysentery. Planting trees on both sides of the road can reduce noise, and various trees, flowers and green branches and leaves can beautify the environment and provide an ideal environment for people to study, work and live.

Thirdly, afforestation can preserve soil and water, and effectively control soil erosion and land desertification. Many places in China have low vegetation coverage and serious soil erosion. Especially in the Yellow River Basin, due to the loose soil, every rainy season, rain washes away, and a large amount of sediment flows into the Yellow River, which makes the river turbid and the riverbed elevated, which brings great difficulties to flood control. Planting more trees can control soil erosion. Because trees have huge roots, which grip the soil like giant hands. Water in the soil is absorbed by roots and stored. According to statistics, an acre of forest stores 20 tons more water than no forest area. The most effective and important method in desert control is to plant trees. Because? The main weapon of desert attacking human beings is sandstorm? (Zhu Kezhen), a large number of afforestation can form a series of shelter forests, reduce wind speed and wind power, fix sand dunes, and play a role in controlling sandstorms.