High Quality Content by WIKIPEDIA articles! Agricultural and industrial nitrogen (N) inputs to the environment currently exceed inputs from natural N fixation. As a consequence of anthropogenic inputs, the global nitrogen cycle (Fig. 1) has been significantly altered over the past century. Global atmospheric nitrous oxide (N2O) concentrations have increased from a pre-industrial value of ~270 ppb to ~319 ppb in 2005. Human activities account for over one-third of N2O emissions, most of which are due to the agricultural sector. This article is intended to give a brief review of the history of anthropogenic N inputs, and reported impacts of nitrogen inputs on selected terrestrial and aquatic ecosystems.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.