What changes have taken place in the global environment in recent years and what changes will be made in the future?

There is a hole in the ozone layer over Antarctica, the climate is getting warmer, the average temperature is rising, and the polar ice layer is melting, which leads to the rise of sea level. In the next decade or so, seawater will flood some bottom coasts, and in a few decades, it will include most parts of the Netherlands and Manhattan.

One: On global environmental issues:

1. Global environmental problems, also known as international environmental problems or global environmental problems, refer to global environmental pollution and ecological balance destruction beyond the boundaries and jurisdiction of sovereign countries. Its meaning is: First, some environmental problems are common on the earth. Environmental problems in different countries and regions are universal and similar, such as climate change, ozone layer destruction, water shortage and sharp decline in biodiversity. 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.

2. Although the global environmental problem is the continuation and development of environmental problems in various countries and regions, it is not the sum of environmental problems in various countries or regions, so it shows its unique characteristics as a whole:

Two: Although the environmental problems in the past occurred all over the world, their influence scope, harmful objects or consequences were mainly concentrated near pollution sources or in specific ecological environments, and the influence space was limited, but they were global environmental problems, and their influence scope expanded 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.