The ecology is a science about studying ecosystems. The ecological equilibrium in various dictionaries is defined as "a condition of dynamic balance in community of organisms in which a genetic, species and ecosystem diversity remain rather stable, are subject to gradual changes in the course of natural inheritance" or "stable equilibrium of number of each look in an ecosystem".
Introduction
The most important feature is that the natural balance in an ecosystem is maintained in each concrete timepoint and corresponds to the soil and climate. This balance can be broken in connection with introduction of new types, sudden disappearance of some animals, natural disasters or technogenic catastrophes. The ecological equilibrium is a continuously changing ratio resource — ecological opportunities and economic requirements. It is necessary to consider also as human population and development affect ecological equilibrium.
Natural ecological equilibrium
The ecological equilibrium is maintained by difficult relationship between living organisms and environmental conditions, relationship between different types and relationship in the look. The conflicts can arise in fight for consumption of resources. And if the quantity of a resource is limited or insufficiently, then there is a competition in fight for survival. The main type of relationship is an eating by one type of organisms of another. Predators can be an example — strong animals eat other weaker. Separate animal species are herbivorous and eat plants. There are also plants predators which eat living organisms. As a result of long processes of such interaction the ecological disruption is possible. There can be a destruction of a landscape to full or very long loss of biological efficiency.
Influence of the person on the nature
Also the negligent relation of the person to the nature can negatively affect. For development we fell trees, we expand the asphalted grounds, thereby killing vegetation. The water balance also influences soil ecology. The urbanization demands a huge number of resources to feed the population of the cities and to support the industry. It is often necessary drillings of deep wells or redirection of water to more remote places. Also leads wars to ecological losses. For example, carpet bombings during the war in Vietnam led to loss of the habitat of many types. Increase in the area of a paving reduces amount of water vapor and leads to pollution of ground waters if for cleaning of roads of ice use salt.
Conclusion
There are many examples of that as increase in human population influences an ecosystem. For the last 1000 impact of the person on ecology increased, generally due to deforestation and to increase in pastures. Such problems amplified with the unprecedented growth of population and an urbanization in recent years that led to increase in anthropogenic influence not only at separate types, but also at the whole ecosystems. Fast rates of development resulted in many undesirable results. Many plant species and animals types disappear, and ancient ecosystems become objects of negative impact.