Research status of marine environmental protection at home and abroad

Environmental problem is a complex problem faced by human beings, and it is difficult to sort it out completely in the limited space here.

Chu. Mainly divided into ecological damage, environmental pollution and global warming, ozone layer damage, acid rain and other global atmospheric environmental problems. There are other prominent aspects of environmental problems, such as energy and resources problems and marine problems.

Pollution, transboundary movement of hazardous wastes, urban environmental problems, water crisis, loss of biodiversity and so on. The following is just an introduction to marine pollution.

Marine environmental problems include two aspects: first, marine pollution, that is, pollutants enter the ocean, which exceeds the self-purification ability of the ocean; The second is the destruction of marine ecology, that is, under the influence of various human and natural factors, the marine ecological environment is destroyed.

(a) marine pollution

Most marine pollutants are produced on land. Coastal activities such as waste dumping and port engineering construction also discharge pollutants into coastal waters. Pollutants enter the ocean, polluting the marine environment, endangering marine life and even endangering human health.

(2) marine ecological destruction

In addition to marine pollution, human production activities, such as engineering construction and fisheries (reclamation and overfishing, etc. ), as well as changes in the natural environment such as global warming and sea level rise, will destroy and change the marine ecological environment.

Change. Over-fishing of some marine organisms by human beings has led to a decline in the quantity and quality of marine biological resources, and some species are on the verge of extinction. Some coastal engineering construction and reclamation lack scientific demonstration, which destroys the coastal ring.

Environment and coastal ecosystem. At present, marine development activities still lack comprehensive and long-term planning, and the comprehensive benefits are poor.