What are nitrogen sinks?
In terms of mineral cycles, a “sink” is where the mineral is accumulated and taken out of the cycle for a period of time. If you are looking for information on this online, use the term “nitrogen sink” in quotation marks in the search box. One kind of nitrogen sink is the humus layer of boreal forests. We know that the needles fall from pines and other trees and that decomposition is very, very s-l-o-w. This ties up the nitrogen for many, many years. Here’s some info on that subject: http://www.sciencedirect.com/science?_ob… You should be able to find others using “nitrogen sink”.
