ENVR 200 Lecture Notes - Lecture 19: Nutrient, Hydrosphere, Radiative Forcing
23 Nov 2017
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Document Summary
N2 is a triple bond which cannot be broken easily. Organisms made largely of protein, part of nitrogen cycle(large nitrogen footprint") Many components of n cycle are environmentally significant", key roles in environmental quality(modify out influence on the n cycle to improve this) Nitrogen component of protein, essential nutrient for all organisms. Short and long term n cycle(associated with short/long term c cycle) Acquisition of inorganic n (ammonium, nitrate) by organisms and conversion to organic n(amino acids, proteins) Conversion of organic n to inorganic form and releases into environment(soil, solution, water) N is released when it is in excess of organisms requirements (c limits) Plants will uptake inorganic n(both ammonium, nitrate) to complete the immobilization. Nitrate is negative charged and ammonium is positive charged (nh4+)or neutral atom as nh3. water quality in nitriteno2-(toxic), think more about nitrateno3- Nox is a kind of pollutants, fossil fuels burning contribute the nox(no, no2,no3- and etc)
