ABSTRACT
Measurement of soil-surface gas emissions is useful for several purposes. It is required to
fully assess the impact of land management on the atmospheric environment (e.g., ammonia,
greenhouse gases, and pesticides), and to develop and test predictive emission models. Also,
the short-term rates of several soil biological or chemical reactions can be more easily
quantified by measuring the rate of emission of their gaseous products than by monitoring
the rate of change in the amounts of soil substrates.
