Saturday, 13 August 2016

Viki Sangre

Different Types of Ecosystems in the World | Natural, Man-made or Artificial

There are two broad types of ecosystems in the World i.e Natural and Artificial Ecosystems.

The natural type of ecosystems is those that prevail in nature, like pond, stream, lake, sea, ocean, coral reef, grassland, dryland, desert, Arctic circle, mountain ecosystem etc.

Natural Ecosystems

Natural ecosystems are categorized as further two different types of ecosystems; Terrestrial and Aquatic.
  • Forest, grassland, dryland, tundra, tropical rainforest are some of the natural terrestrials ecosystems in World.
  • Pond, stream river are some of the freshwater aquatic ecosystems; while sea, ocean, brackish lake coral reef are marine aquatic ecosystems.

Artificial Ecosystems

Artificial types of ecosystems are manmade and simple such as an aquarium or a crop field. They are short-lived and subject to human intervention and manipulation.

Natural ecosystems are self-regulating dynamic systems without any direct human manipulation or interference. They do not have a pronounced boundary. They have a common gross structure and function. All natural systems are also open systems where there is an exchange of inputs and outputs with other systems.

On the basis of annual precipitation (rainfall) and vegetation cover, drylands ; which have a permanent periodic shortage of moisture, may be subdivided into semi-arid lands and hyper-arid lands. Semi-arid lands with its flora and fauna from the semi-arid ecosystems.

Out of the 32 percent of the Earth's total dryland, 15 percent are semi-arid land, where 19-24 percent of the earth's population (700-1k million people) inhabit and depend on them for a living.