| Popis: |
Anticipated future increase in atmospheric carbon dioxide (CO2) is environmentally problematic leading to climate change owing to its radiative forcing, whereas it enhances primary production of terrestrial ecosystems, including rice plants in paddy fields. However, responses of rice plants to elevated CO2 levels ([eCO2]) are also subject to nitrogen (N) availability, as well as climate change. A free-air CO2 enrichment (FACE) facility enables to simulate [eCO2] in an actual paddy field, where we can investigate how rice plants and paddy rice ecosystems respond to [eCO2] in conjunction with other factors, such as N availability and temperature rising. We implemented a three-year project focusing on N aspects of the FACE study (abbreviated as FACE-N) during 2010–2013 using the Tsukuba FACE for single cropping of paddy rice in central Japan. In this chapter, the concept, components, and major achievements of FACE-N are summarized, and prospective future research with respect to responses of N-related processes in paddy rice ecosystems to [eCO2] is suggested. |
