소개글
[농업환경학] Dissolved Organic Nitrogen(영문)에 대한 자료입니다.
목차
1.Introduction : Leaching Losses Of N
2.What is DON?
3.N losses In Agricultural Fields
4.Distinct DON Pools In Soil
5.DON Sampling Devices
6.The DON Measuring Methods
7.The influence of doc on n losses
8.Conclusion
본문내용
Introduction : Leaching Losses Of N
NO3- has been thought to be predominant form of leaching losses of N from agricultural fields
It is conventional wisdom that DON takes negligible portion on leaching losses of N
Leaching DON might not be insignificant and harms human
It should be considered when N budgets are constructed
What is DON?
TDN(Total Dissolved Nitrogen) consists of DIN and DON
DIN includes nitrate-N (NO3-), ammonia-N (NH4+) and nitrite-N (NO2-)
DON is a mixture of compounds ranging from amino acids to complex humic substances
N losses In Agricultural Fields
Generally, studies for N losses has not considered DON but DIN in agricultural systems
Whereas DON has been regarded as a major component in N losses of nonagricultural systems
Albeit lack of knowledge on DON, The idea is growing that it's contribution on N losses might not be ignorable