Environmental research study report

With the development of modern cities, a new kind of pollution, light pollution, has emerged, which has become an environmental hazard in the current city and affects people's physical and mental health. This kind of light pollution is caused by reflective and anti-heat building materials, such as the glass curtain wall of some buildings. The sunlight reflected in the afternoon about 2 to 4 hours is just facing the road, and the driver's line of sight is disturbed, posing a safety hazard. This problem also exists in Shenzhen, especially the high-rise reflective and anti-heat glass curtain wall in the prosperous area. Therefore, the group conducted investigations and studies on the prosperous areas such as Caiwuwei in Shenzhen, and carried out research on “light pollution”. Subject purpose:

1. Recognize and understand the relevant knowledge of light pollution.
2. Investigate urban light pollution and make recommendations.
3. Learn to unite and cooperate and learn to explore and research knowledge. ??

Project research process and method:
1. Find information: search online, read the book. gather information.
Light pollution is divided into artificial light and natural light, which are harmful to the human body.
How does man react to the color of light?
The harm of light pollution to various people.
2. Field surveys of interviews with pedestrians and drivers.
Take a photo and record the facts.
3. Summarize and organize the materials and analyze the content.
Create a web page.

Research results and analysis:
1. Light pollution and its harm According to the interpretation of environmental science, light pollution refers to the phenomenon that excessive light radiation, ultraviolet radiation and infrared radiation have adverse effects on human health, human life and working environment.
Glare?
Glare is common in light radiation that causes light pollution. Glare refers to the unsuitable brightness range in the field of view, the extreme brightness contrast in space or time, which causes visual phenomena that are uncomfortable or reduce visibility. The light pollution of the glass curtain wall is due to its reflection of sunlight, light, etc. Excessive light causes glare. Glare causes people's vision to drop and fatigue quickly. There are many glare pollutions in daily life. For example, the glare of car headlights coming on at night will reduce the control of drivers and pedestrians who are stimulated by light, and it is easy to be dangerous.
Natural light natural light is the main source of solar radiation. The sun is mainly composed of ultraviolet rays, infrared rays, visible light, and the like. Light pollution refers to the excessive radiation of light, which can adversely affect human health, human life and the working environment. Such as: excessive exposure to ultraviolet light in the sun, it will cause solar dermatitis, which will cause redness and swelling of the exposed parts of the body, severe cases of blisters, burning, itching or pain in the affected part; when the condition is serious, it may be accompanied by physical discomfort, Fever, nausea and heartbeat are accelerated. Long-term sun exposure can cause chronic damage. Long-term exposure to sunlight can cause skin cancer. But the right amount of sunlight is necessary.
Reflecting sunlight reflects sunlight, which is the most serious in the city. For example, the architecture of our city, although mainly based on glass curtain wall, is very beautiful, but there is hidden murder behind the beautiful, which brings many dangers to the people around it, such as: normal cell decline, high blood pressure Bad symptoms such as irritability and heat can also cause people's vision to drop, especially glare.
Artificial light artificial light refers to the electric lights that we use every day, the lanterns used in dance halls, etc. In the dance hall, the lights we see are colorful and beautiful, but how much do you know about its harm? A wide variety of lanterns are one of the sources of light pollution. Although the lantern can strongly stimulate the senses, and stimulate the cells, it can make people's eyes uncomfortable and affect the central nervous system of the human body. It can cause dizziness and unstable standing. It will cause headache under such light for a long time. Blindness, loss of appetite. In addition, scientific research shows that color light can cause psychological stress, and different colors have different levels of psychological pressure. ?

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Color light psychological pressure index light color white light yellow light green light blue purple red light black light pressure index 100 113 133 152 155 158 187
How light pollution causes myopia as a student, our harm from light pollution is even more serious. Modern students' myopia has a rising trend, and the essential reason is light pollution. The lamp used by students is divided into infrared light and ultraviolet light. Infrared light is easily absorbed by water, and about 80% of human eyeballs are water. Long-term absorption of infrared light can cause ocular tissue to mutate; ultraviolet light has penetrating power and strong lethality, and long-term exposure to ultraviolet light causes damage to eye cells. Light pollution from the desk lamp can cause fatigue and damage to the eyes, which can reduce vision. 2. Prevention and recommendation of light pollution In areas where light pollution is more serious, trees can be planted more, trees can reduce the intensity of light pollution, thereby reducing light pollution to people.

Body effects and hazards.
Buildings in heavy traffic areas should use less or no reflective, anti-heat building materials, and it is best to use non-reflective, non-heating building materials.
Residential areas do not need reflective and anti-heat building materials, because it will directly harm people's health and living habits.
If reflective building materials are used as the exterior wall, there should be an automatic steering reflective system. For example, if two buildings are separated by a certain distance, if the sunlight is shot from the opposite building, the reflective exterior wall of the building is adjusted by an automatic reflection system to a certain angle, and is directed to another building and then automatically reflected. The system, the light is reflected to the sky, the feasibility of this concept is ok, but it is impossible to complete the system according to the current level of technology, it needs high-tech and high-energy consumption, so this idea Only realized in the future.
Modern society advocates the use of new energy, and solar energy is one of them. We can use the high heat of the sun to generate electricity. In some highland areas, it is exposed to the sun for many years. We installed solar energy into electrical energy equipment there. It is also possible to install such instruments on high-rise buildings to convert solar energy into electrical energy. First, it can reduce the amount of carbon dioxide pollution in the world. Because we use solar power to reduce the amount of vegetation, we can also reduce the amount of coal burned. The second is to reduce the electricity bill for this building, and even sell electricity to the power generation company. At the same time, it can bring suitable indoor temperature to people working in this building. It is not hot in summer and not cold in winter.
For glass curtain walls that have already produced light pollution, experts suggest that other remedies can be taken, such as replacing the new matt exterior building materials or adding light-shielding measures to places affected by light pollution.
At present, China has not yet enacted legislation on light pollution. With the development of society, the municipal government should formulate laws on light pollution. For example, how to use reflective and anti-heat building materials, and how to use it; how to improve areas with serious light pollution. In line with China's current stage, effective laws will be enacted to improve the light pollution of modern cities and international metropolises, so as to ensure the health of people here.

references
1. "Guidelines for Research Learning Methods", "Guangdong Province Education First Press", 2001.
2. "Light pollution that cannot be ignored" "Shenzhen Legal News" October 10, 2001