Free Nitrogen Cycle Diagram Generator

A nitrogen cycle diagram shows how nitrogen moves in nature. It maps fixation, nitrification, assimilation, ammonification, and denitrification with labeled arrows connecting the atmosphere, soil, plants, and bacteria. SciFig's nitrogen cycle diagram generator can label every step or leave the figure blank for practice.

The nitrogen cycle has five main steps in order. Nitrogen fixation converts atmospheric N2 into ammonia, nitrification oxidizes ammonia to nitrite and then nitrate, assimilation builds plant proteins and nucleic acids, ammonification returns organic nitrogen to ammonia, and denitrification releases N2 back to the air. A nitrogen cycle process diagram places each step in sequence.

Describe the steps and labels you want and SciFig builds it. A fully labeled nitrogen cycle diagram includes atmospheric N2, ammonia, nitrite, nitrate, the bacteria involved, and arrows for each conversion. SciFig's nitrogen cycle diagram generator produces labeled or blank versions from the same scientifically accurate base.

Nitrogen fixation converts inert atmospheric N2 into ammonia. It is carried out by Rhizobium bacteria in legume root nodules, free-living soil bacteria, and lightning. A nitrogen fixation diagram highlights these routes and the enzyme nitrogenase that makes ammonia available to plants.

Several specialized bacteria drive each nitrogen cycle step. Rhizobium and free-living bacteria fix nitrogen, Nitrosomonas oxidizes ammonia to nitrite, Nitrobacter converts nitrite to nitrate, and denitrifying bacteria return nitrate to N2 gas. A labeled nitrogen cycle diagram names the bacteria at every arrow.

Both are biogeochemical cycles that recycle key elements. The nitrogen cycle moves nitrogen through fixation and denitrification, while the carbon cycle moves carbon through photosynthesis and respiration; both rely on bacteria and depend on decomposers to return elements to the environment.