Nitrogen Cycle refers to the conversion of nitrogen and nitrogen compounds. Environment Has changed Chemical Process And the decline of the two strains of micro-organisms in air, soil, rock and water from a well in the current round .
Nitrogen is an essential component of amino acids , the protein composition of all kinds of creatures . Plants use nitrogen in Figure 2 is ammonium (NH4 +) and nitrate (NO3 -) , and although the atmosphere is composed of nitrogen 80 %, but in the form of nitrogen (N2) , which the plant can not be used. Nitrogen can enter the nitrogen cycle of the ecosystem , including second .
1. Rain leaching of nitrogen into ammonium nitrate and flows into the soil and plant nutrients to grow by reactions absorption
2. nitrogen fixatiom , in which only some bacteria . Can only use nitrogen in the atmosphere of nitrogen that plants can use.
The estrogen in organic matter can be converted back to gaseous nitrogen through two processes.
1. nitrification Some bacteria use ammonia as an energy source in the soil and causes . Nitrite (NO2 -) , which is converted to nitrates , which plants use
2. Denitrification in anaerobic conditions . Some bacteria can generate oxygen from nitrate . And yields a return nitrogen to the atmosphere .
Although the nitrogen cycle in the ecosystem, all this is a small number. But the nitrogen cycle in nature is balanced by the reaction caused by the decomposition of plants and bacteria