Nitrogen Cycle, definition, stages and importance

The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmospheric, terrestrial, and marine ecosystems.

1. Environmental Science Nitrogen Cycle

2. Nitrogen Cycle is a biogeochemical process through which nitrogen is converted into many forms, consecutively passing from the atmosphere to the soil to organism and back into the atmosphere. What is a Nitrogen Cycle?

3. The nitrogen cycle is crucial in all life on earth, because nitrogen is needed to make some of the important molecules for life including DNA, RNA and Proteins that are needed by all living things. How Crucial is the Nitrogen Cycle?

4. That Earth’s Atmosphere is made up of 78% Nitrogen . Did you Know?

5. 5 Stages of Nitrogen Cycle 01 04 03 02 05 Nitrogen Fixation Ammonification Denitrification Nitrification Assimilation

6. the inert form of nitrogen gas is deposited into soils from the atmosphere and surface waters, mainly through precipitation. 01 Nitrogen Fixation

7. a man-made alternative that aids in nitrogen fixation by the use of ammonia. 01 nitrogen compounds get fixed in the soil by the microbes. 03 02 3 Types of Nitrogen Fixation Atmospheric Fixation Industrial Fixation Biological Fixation the energy of lightning breaks the nitrogen into nitrogen oxides, which are then used by plants.

8. ammonia is converted into nitrate by the presence of bacteria in the soil. Nitrification 02

9. 03 Assimilation Plants take in the nitrogen compounds from the soil with the help of their roots.

10. When plants or animals die, the nitrogen present in the organic matter is released back into the soil. 04 Ammonification

11. 05 the process in which the nitrogen compounds make their way back into the atmosphere by converting nitrate (NO3-) into gaseous nitrogen (N). Denitrification

12. Importance of Nitrogen Cycle Helps plants to synthesise chlorophyll from the nitrogen compounds. Helps in converting inert nitrogen gas into a usable form for the plants through the biochemical process.

13. Importance of Nitrogen Cycle In the process of ammonification, the bacteria help in decomposing the animal and plant matter, which indirectly helps to clean up the environment. Nitrates and nitrites are released into the soil, which helps in enriching the soil with the necessary nutrients required for cultivation.