Final thesis

Name:

College: Class: Student ID: Teacher: Number:

Human life and the utilization of earth resources

abstract:

This paper mainly expounds the relationship between human beings and natural resources, and the reasons and consequences of human overexploitation of natural resources. At the same time, it shows that the future of mankind must depend on itself, and we must unswervingly adhere to the strategy of sustainable development, because only in this way can our future be better and our descendants can live better on this earth. At the same time, it also expounds how we, as contemporary college students, should protect our earth home.

Key words:

Earth resources, human life, sustainable development, future

Main text:

Since modern times, especially after the industrial revolution and the Second World War, many countries have embarked on the road of development characterized by industrialization. The use of industrial power has increased sharply, the variety and quantity of products have increased sharply, and the intensity of agricultural reclamation and the use of pesticides have also expanded rapidly, leading to serious environmental pollution and ecological destruction in many countries. The earth is the home of human beings, but human activities have caused serious damage to the earth. Forests, lakes, wetlands, etc. The environment on which living things depend is disappearing at an alarming rate; Due to over-exploitation, non-renewable energy sources such as coal, oil and natural gas are facing exhaustion; A large number of greenhouse gases emitted by energy combustion lead to global warming, and the resulting problems such as melting polar ice sheets and rising sea levels threaten human survival and development.

While creating brilliant modern industrial civilization, mankind has entered a misunderstanding of the connotation of development and blindly abused the natural resources and ecological environment that support economic development, resulting in excessive consumption of earth resources, rapid ecological destruction, environmental deterioration and a decline in the actual social welfare level. At the same time, with the rapid growth of global population and economic development, the demand for resources is increasing day by day, and mankind is being seriously challenged by the shortage and exhaustion of some resources. Resources and environmental problems threaten human survival and sustainable development. The relationship between man and nature has reached an unprecedented level of tension.

We have gained endless wealth from Mother Earth, but at the same time, we have brought countless disasters. The earth is our mother, and we live on it. At present, human beings have no ability to leave the earth and live on other planets. So we must protect our homeland and make our life better.

Water is the main component of human environment and the basic element of life. For centuries, people generally believe that water resources are endowed by nature and inexhaustible, so they are not cherished and wasted. However, in recent years, more and more people have realized that water resources are not as rich as expected, and the lack of water in many areas has limited economic development and affected people's lives. At present, the global annual water consumption has reached 7 trillion cubic meters. In addition, the discharge of industrial wastewater, the abuse of chemical fertilizers, the random dumping of garbage and the sharp increase of domestic sewage have turned rivers into sewers and lakes into sewage fields. Deforestation caused a lot of water evaporation and loss, and drinking water decreased sharply. Water shortage has sounded the alarm for mankind. According to the water quality monitoring project of Global Environmental Monitoring System, about 10% of the monitored rivers in the world are polluted, and the biochemical oxygen demand (BOD) value exceeds 6.5 mg/L, and the water bodies are polluted by nitrogen and phosphorus. The average phosphorus content of polluted rivers is 2.5 times that of unpolluted rivers. According to United Nations statistics, there are more than 100 countries and regions in the world in urgent need of domestic water, among which 43 countries are seriously short of water, endangering the survival of 2 billion people, mainly in Africa and the Middle East. Many scientists predict that water will become the scarcest resource for human beings in 2 1 century. As people hope, don't let human tears become the last drop of water on the earth. In fact, the total amount of water resources on the earth is not small, but the fresh water reserves that are closely related to human life and production activities and easy to develop and utilize are about 400km3, accounting for only 0.3% of the global total water, mainly river water, lake water and groundwater. At present, China's total water resources account for 7% of the world's total water resources, ranking sixth in the world, with a per capita possession of only 2400m3, accounting for 25% of the world's per capita water resources, ranking 1 19 in the world, and being one of the 13 water-poor countries in the world. Secondly, human development is also facing the problem of shortage of land resources: about 20% of the earth's land area is in polar and alpine areas, 20% in arid areas, 20% in steep slopes, and 10% of the land is exposed under rocks, lacking soil and vegetation. Of the above four items, * * * accounts for 70% of the country's land area, and there are different degrees of constraints in land use, geographers and ecologists.

Call it a "restrictive environment". The remaining 30% of the land has less restrictions and is suitable for human habitation, which is called "livable land", that is, livable land, including cultivated land, housing, industrial and mining, transportation, culture, education and military land. Calculated by 30% of 2.5hm2 per capita, the per capita share is 0.75hm2. In livable areas, cultivated land accounts for about 60% ~ 70%, and the per capita area is 0.45 ~ 0.53 hm2.

The most important energy, mineral resources, is in short supply: mineral resources are natural resources with utilization value, which are produced by geological processes for tens of millions, hundreds of millions or even billions of years after the formation of the earth's crust, exposed on the surface or buried underground. Mineral resources are the main source of human means of subsistence and production, and an important material basis for human survival and social development. At present, more than 95% of energy, more than 80% of industrial raw materials, more than 70% of agricultural production materials and more than 30% of industrial and agricultural water come from mineral resources. Different from other natural resources, mineral resources are non-renewable and unevenly distributed in the world. With the continuous growth of human development demand, the consumption rate of mineral resources is increasing day by day, and mineral resources are gradually exhausted.

At present, the problems of resources and environment have become one of the important problems faced by human beings in the world. These problems are manifold. The problems of resources and environment discussed in this paper are mainly due to the improper use of resources and environment by human beings and the disharmony of human social and natural. In view of the modern contradictions, this paper mainly introduces the main problems of resource shortage, environmental pollution and ecological destruction.

Such a grim reality makes human beings have to re-examine their social and economic behaviors and deeply reflect on the traditional views on development, values, environment and resources. Both developed and developing countries in the world are forced to rationally explore the development model and strategy in the new century, trying to break through the cage of sacrificing the ecological environment and blindly pursuing economic growth in the past, and seek a brand-new development path that can not only ensure economic growth and social development, but also maintain a virtuous cycle of ecology. It can be said that the world has never seen the relationship between environment and development so profoundly and importantly as it is today. The strategy of "sustainable development" is put forward under this background. As a new development strategy of human society, its appearance has been quickly accepted and recognized by all countries in the world, and it has further become the driving force of global economic development and the goal of pursuing civilization and progress.

However, although human beings are faced with numerous contradictions, including those caused by environmental problems, their intelligence and wisdom lie in their ability to learn lessons and accumulate experience from practice. The challenge of environmental problems has educated mankind for more than half a century, and mankind finally realizes that the earth is our only home, and we should cherish and save it. Only when human beings correct their wrong attitude towards nature and change their wrong practices towards environment and resources can the earth's environment be restored to a harmonious and beautiful state.

Mankind seems to have found a bright road to sustainable development for itself, and human intelligence is also reflected in the ever-changing technology. We are fully confident that under the direction of sustainable development, mankind will make new development and progress in science and technology. These advanced technologies can not only solve various environmental problems in the world at present, but also restore the beautiful face of the devastated earth. It will certainly make the future industry, agriculture and all development undertakings live in harmony with the natural environment, without damaging the long-term interests handed down from generation to generation on the earth.

Of course, we must also see that the implementation of sustainable development will be a long and arduous process. It is necessary to change traditional concepts, abandon outdated technologies, strengthen scientific management and legal system construction, and accelerate the development of science and technology. All these require time, funds, cooperation and struggle. This process is often full of contradictions and difficulties. Therefore, it cannot be smooth sailing. But we have seen some examples, some role models. They tell us that sustainable development is not a dream. As long as we work hard, we can achieve sustainable development and human beings can survive and multiply on the earth.

Protecting the earth starts with small things and starts with things around us. As contemporary college students, we can do many things for our planet.

In life, we should save electricity, turn off the lights and use energy-saving lamps. According to the estimation of the U.S. Department of Energy, replacing traditional light bulbs with energy-efficient light bulbs can reduce 400 million tons of carbon dioxide emissions. In addition to electric lights, we should also pay attention to the use of other electrical appliances, try to choose low-consumption and energy-saving products, and cut off or turn off the power supply when not using electrical appliances, especially computers. When the weather is not very hot in summer, it is best to use fans or electric fans instead of air conditioners. When using the air conditioner, don't adjust the temperature too low, just about 26℃. Re-entry saved water resources. Many wastewater can be recycled. Water for washing face, hands, bath and clothes can be collected to flush toilets and mop the floor. Garbage sorting treatment. Garbage sorting can recycle valuable resources and reduce the energy consumed by landfill and incineration. For example, waste paper is sent directly to a paper mill to produce recycled paper;

Disposable commodities such as beverage bottles, cans and plastics can also be sent to related factories to become renewable resources; Household appliances can be sent to specialized manufacturers for decomposition and recycling. Different garbage bags can be prepared at home to collect waste paper, plastics, packaging boxes and so on. Classify and recycle garbage every day, and try to turn waste into treasure.

We should save paper in our study and work. The recycling of paper can avoid methane released by landfill and reduce the felling of trees. According to statistics, recycling one ton of waste paper can produce 800 kilograms of recycled paper, which can reduce the felling of 17 trees. Saving paper is to protect forest resources and the environment. Reduce exhaust emissions. Traffic waste gas and industrial waste gas are the main sources of domestic waste gas. We try to take a bus or taxi when we go out, or we can ride a bike.

Let's start from the dribs and drabs around us, cherish the precious resources on the earth with our own practical actions, and care for the home on which we live. This is for our own life, but also for our descendants and all life on the earth. We believe that as long as we adhere to the strategic goal of sustainable development and care for the earth on which we live. I believe that our mother earth will become more and more beautiful!

References:

0 1. Baidu Encyclopedia ()

02. Xinhuanet ()

03. Ministry of Environmental Protection of People's Republic of China (PRC). cn)