Second, although it is an environmental problem in some countries and regions, its impact and harm have transnational and cross-regional results, such as acid rain, marine pollution, transboundary movement of toxic chemicals and hazardous wastes.
At present, the global environmental problems are mainly: global climate change, acid rain pollution, ozone layer depletion, transboundary movement and diffusion of toxic and harmful chemicals and wastes, sharp decline of biodiversity, marine pollution and so on.
There are also common ecological and environmental problems in developing countries, such as water pollution and water shortage, land degradation, desertification, soil erosion and forest reduction.
Extended data
Although global environmental problems are the continuation and development of environmental problems in various countries and regions, they are not the sum of environmental problems in various countries or regions, so they show their unique characteristics as a whole:
globalization
In the past, although environmental problems occurred all over the world, their influence scope, harmful objects or consequences were mainly concentrated near pollution sources or specific ecological environment, and the influence space was limited, but global environmental problems expanded their influence scope to the whole world. This is because:
1. Some environmental pollution has transnational and trans-regional mobility: for example, in some international rivers, pollution caused by upstream countries may endanger downstream countries; Acid rain caused by air pollution in some countries may fall to other countries.
2. Some contemporary environmental problems, such as climate warming and ozone hole, have global impacts and their consequences are also global.
3. Many contemporary environmental problems involve high altitude, ocean and even outer space, and their spatial scale is far from the general environmental problems in agricultural society and the early stage of industrialization, with large-scale and global characteristics.
comprehensive
In the past, people were mainly concerned about the impact of environmental pollution on human health. Global environmental problems have gone far beyond this category, involving all aspects of human living environment and space, such as sharp decline in forests, grassland degradation, desert expansion, frequent sandstorms, air pollution, species reduction, water crisis, urbanization, etc., and have penetrated into all aspects of human production and life. Therefore, to solve contemporary global environmental problems, we should not simply consider our own problems, but take a region, a river basin, a country and even the whole world as a whole, and comprehensively consider the laws of natural development, the solution of poverty and the sustainable development of economy, the rational development and recycling of resources, the improvement of human humanities and living conditions and social harmony. This is a complex system engineering, which needs to be solved by considering various factors.
contact
In the past, people who cared about environmental problems were mainly scholars in the field of science and technology, victims of environmental problems and related environmental protection institutions and organizations, such as Greenpeace. Contemporary environmental problems have affected all aspects of society and everyone's survival and development. Therefore, the contemporary environmental problems are not limited to the concern of a few people and departments, but have become the concern of the whole society.
high-tech
With the rapid development of contemporary science and technology, there are more and more environmental problems caused by high technology. For example, environmental problems caused by nuclear accidents, electromagnetic waves, noise, ozone layer destruction caused by supersonic aircraft, space pollution caused by space flight and so on. These environmental problems have high technical content, wide influence, great difficulty in governance and serious consequences, which have aroused widespread concern all over the world.
accumulative
Although mankind has entered the era of modern civilization and post-industrialization and informationization, environmental problems arising in different stages of history still exist on today's earth and have far-reaching effects. At the same time, modern society has produced a series of new environmental problems. Due to the long period of influence of many environmental problems, a complex situation of accumulation, combination change and concentrated outbreak of various environmental problems has been formed on the earth.
Politicize
With the increasingly serious environmental problems and the improvement of the whole society's understanding of environmental protection, colleagues from all walks of life pay more and more attention to environmental protection. Therefore, contemporary environmental issues are no longer purely technical issues, but have become important issues in international politics and domestic politics of various countries. Its main performance is as follows:
1. Environmental issues have become an important part of international cooperation and exchange.
2. Environmental problems have become one of the fuses of international political struggle. For example, countries often have conflicts on environmental responsibilities and obligations, pollution transfer and other issues, leading to fierce political struggles.
3. Some organizations that aim at environmental protection have appeared in the world, such as Greenpeace, which has occupied a place in the international political arena and become a new political force.
In short, environmental problems have become a national event and need to be dealt with by the state through its basic law, national planning and comprehensive decision-making; Become an important content to evaluate the political achievements of politicians and political parties; It has also become one of the important signs of whether the social environment is stable and whether politics is enlightened.
References:
Global Environmental Issues-Baidu Encyclopedia