Natural and Agriculture Ecosystem

Presented By:
MUHAMMAD SHEHZAD
ROLL NO : 2017-AG-MA-34
Submitted to:
PROF.DR.AHMAD NAEEM SHB
Department: Agronomy

Topic:
Agriculture ecosystem vs
Natural ecosystem

OUTLINE:
 Ecosystem?
 Types Of Ecosystem?
 What is natural ecosystem?
 What are Services Of Natural Ecosystem?
 What is agriculture ecosystem?
 What are Services Of Agricultural Ecosystem?
 Comparisons between agriculture ecosystem & natural ecosystem.

A system that includes all living organisms (biotic factors) in
an area as well as its physical environment(a biotic factors)
functioning together as a unit.
ECOSYSTEM:

Types Of Ecosystem?
 Natural Ecosystem
 Agricultural Ecosystem

Natural Ecosystem:
A biological environment occurring freely in
nature rather than being created by human is
called as “natural ecosystem”.

Natural ecosystem has following two types,
1.Aquatic ecosystem
2.Terrestrial ecosystem
Aquatic ecosystem:
Aquatic ecosystem is an ecosystem in body of water. Communities
of organisms that are dependent on each other and on their
environment live in aquatic ecosystems

Aquatic ecosystem is further sub classified,
1.Fresh water ecosystem
(i)Running water ecosystem
Examples
Rivers , Streams
ii)Standing water ecosystem
Examples
Pond , Lake
2.Marine ecosystem
Examples
Seas and sea shores

Terrestrial Ecosystem:
Those ecosystems that exits on land are
known as terrestrial ecosystem.
Examples:
Grassland ecosystem
Forests ecosystem
Desert ecosystem etc.

Services Of Natural Ecosystem:
 Purification of air and water.
 Mitigations of Drought and floods.
 Preserve and renew soil fertility.
 Pollination of crops and dispersal of seeds.
 Cycling and movement of nutrients.
 Control Majority of agricultural pests..
 Provision of aesthetic beauty.
 Moderations of weather and stabilization of climate.
 Protection from harmful ultraviolet rays of the sun.

Agricultural Ecosystem:
An “agricultural ecosystem” is an ecosystem managed with a purpose
usually to produce crops or animal products.
Agricultural ecosystem are designed by the humans.
Agricultural ecosystem are also called artificial ecosystems.
Artificial ecosystem can be aquatic and terrestrial.
Examples:
.Aquariums . Crops fields . Gardens . Dams ,etc.

Agricultural
ecosystem
Services of agricultural ecosystem:
•Food and fiber
•Aesthetics
•Recreations
•Carbon sequestration
•Biodiversity conservation
•Material and Energy cycling.

Property Natural Ecosystem
Agro ecosystems
Human Control Low High
Net Productivity Medium High
Species and Genetic Diversity High Low
Trophic Interactions Complex Simple, Linear
Habitat Heterogeneity Complex Simple
Nutrient Cycles Closed Open
Stability (resilience) High Low

Property Natural Ecosystem Agro ecosystems
Energy Solar energy only-no additional energy
inputs
Solar energy plus energy from food
Community Natural climax community Artificial climax community
Population controlled By means of natural such as competition
and climate
By both natural means and by use of
pesticides and cultivation

Conclusion:
Natural ecosystem is beneficial for climate and weather
as human are interfering with natural ecosystem that
results in destruction of natural ecosystem, therefore the
weather conditions of the earth are disturbing and
becoming harmful.
Human are also increasing area under cultivation for their
food purposes and destroying the soil fertility by using
hazardous chemicals and also influencing the climate.

Natural and Agriculture Ecosystem

Natural and Agriculture Ecosystem

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