Factors of an environment

Concept of a resource cycle.

Environmental contamination by waste of industrial production.

Moving of substance in ecological systems on food circuits.

Carry of substances to hydrosphere.

Self-clearing properties of an environment.

Factors of an environment.

LECTURE 2

Any element of the environment, capable to render direct influence on alive organisms, even during one of stages of development refers to as factors of an environment.

Distinguish biotichecal, abiotichecal and anthropogenous factors.

Anthropogenous factors are caused by influence of the person on inhabitancy.

Biotichecals factors are caused by influence of alive organisms against each other.

Abiotichecals factors - physical and chemical factors of environment: temperature, pressure, radiation, light.

For ecology characteristics are important:

- Length of a wave, intensity and duration;

- Water. The basic characteristics: quantity of deposits, the humidity, drying up properties of air and the accessible area of a water stock (a surface of a reservoir);

- A climate - joint activity of temperature and humidity;

- Atmospheric gases (oxygen, carbonic gas CO₂);

- Biogenic salts are the dissolved salts, vital to organisms. Distinguish microcells (Fe, Cu, Zn, B, I) and macrocells (Na, Ca, K, S, Cl);

- Pressure;

- The ground, consists of the soil horizons making a soil cover:

A - gumus; B - mineral ground. C - constant soil breed.

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