Global warming poster

Global warming is an indisputable fact. Global warming leads to sea level rise, ecological environment deterioration, typhoon raging, frequent heat waves and frequent droughts and floods. Public welfare posters promoting global warming and suggesting environmental protection are indispensable. The following are the pictures of global warming public welfare posters I compiled, I hope you like them!

Global warming public welfare poster picture

Global warming public welfare classic poster picture

The cause of global warming

(1) Population surge factor: In recent years, the population has increased rapidly, and human beings have cultivated a lot of cultivated land in the increasingly powerful mode of production and economic activities, which is the main factor leading to global warming. At the same time, it also seriously threatens the balance between natural plunder and destruction of forest resources and burning a large number of ecological environment.

(2) air pollution factors: at present, the local area may be more suitable for human habitation; In the case of increasingly serious environmental pollution, high carbon dioxide concentration is a major problem, and it is also one of the main factors leading to global warming and promoting photosynthesis, thus making plants stronger. Now, the research on the jump of plant growth caused by high carbon sequestration rate in the global atmosphere has clearly pointed out the effect of increasing production since the last addition of carbon dioxide, which is the positive impact of global warming of the earth's surface temperature since the end of this century. However, the influence with the front line is rising. In contrast, the negative impact of global warming on human activities is still relatively large.

(3) Deteriorating factors of marine ecological environment: Before August this year, sea level changes were rising, which was reported by CCTV. Due to the influence of climate warming, according to the prediction of relevant experts, the trend of the summit of Mount Everest will decrease by1.3m in the next century. In central Qi, the sea level may rise by 50 cm. If we don't adopt the shrinking of Lianshan Glacier, it will endanger the Hexi Corridor. In recent years, taking correct measures will directly lead to the melting of glaciers in Qilian Mountains, which will reduce damage and pollution compared with the 1970s. In addition, the land is about10 billion cubic meters less, and the snow line of a large number of toxic chemical wastes produced by activities in some areas of glaciers is rising at an average annual rate of 2-2.6 meters. Solid waste is continuously discharged into the ocean; According to experts' analysis, in addition to the major oil spill in seawater and natural climate factors, glacier retreat and snow line rise are another main reason, which is the expansion of ecological environment in coastal areas, overload and overgrazing, over-reclamation, and deforestation caused by human activities. Deforestation is related to indiscriminate exploitation of groundwater.

(4) Destructive factors such as land erosion and desertification. The main cause of soil erosion and desertification is improper agricultural production. As we all know, good vegetation can prevent soil erosion. But so far, human activities, such as excessive deforestation for wood, land reclamation for agricultural production and overgrazing, are still seriously destroying vegetation. At present, on average, 20 hectares of forests are destroyed, 65,438+00 hectares of land are desertified and 47,000 tons of soil are eroded every minute in the world. Soil erosion reduces soil fertility and water retention, thus reducing soil biological productivity and its ability to maintain productivity; It may also cause large-scale floods and sandstorms, causing huge economic losses to society and deteriorating the ecological environment.

(5) Factors of sharp decrease of forest resources: Worldwide, due to natural or man-made factors, the forest area is rapidly decreasing.

(6) Hazard factors of acid rain: The impact of acid rain on the ecological environment has attracted more and more attention from all countries in the world. Acid rain will destroy forests, acidify lakes and endanger living things. At present, acid rain in the world is mostly concentrated in Europe and North America, and most of them occur in developed countries and some developing countries. Acid rain is also occurring and developing rapidly.

(7) Factors that accelerate the extinction of species: Life on earth is a precious resource for human beings, and biodiversity is the basis for human survival and development. But at present, the biological species on the earth are disappearing at an unprecedented rate.

(8) Water pollution factor: According to the water quality monitoring project of Global Environmental Monitoring System, about 65,438+00% of the monitored rivers in the world are polluted. Since the beginning of this century, human water consumption has increased sharply, and the scale of water pollution has also expanded, forming a contradiction between supply and demand of fresh water. It can be seen that the treatment of water pollution will be very urgent and important.

(9) Toxic waste pollution factors: The increasing toxic chemicals not only pose a serious threat to human survival, but also bring harm to the ecological environment on the earth's surface.