fate of photosynthetically-fixed carbon in Lolium perenne grassland as modified by elevated CO₂ and sward management

• Published in: The New phytologist Vol. 173; no. 4; pp. 766 - 777
• Main Authors: Hill, P.W, Marshall, C, Williams, G.G, Blum, H, Harmens, H, Jones, D.L, Farrar, J.F
• Format: Journal Article
• Language: English
• Published: Oxford, UK Oxford, UK : Blackwell Publishing Ltd 01.01.2007; Blackwell Science; Blackwell Publishing Ltd
• Subjects: biogeochemical cycles; carbon; Carbon - analysis; Carbon - metabolism; carbon cycle; Carbon dioxide; Carbon Dioxide - analysis; Carbon Dioxide - metabolism; carbon dioxide enrichment; carbon partitioning; Carbon sequestration; climate change; cutting; defoliation; Ecosystem; fertilizer application; free air carbon dioxide enrichment (FACE); Grassland soils; grasslands; leaves; Lolium - growth & development; Lolium - metabolism; Lolium perenne; nitrogen; Nitrogen - metabolism; Oxygen Consumption; Photosynthesis; Plant roots; Plants; prediction; Radiocarbon; radionuclides; range management; rhizodeposition; roots; Soil; Soil biology; Soil respiration; Soil solution; Sward; Zea mays - growth & development; Zea mays - metabolism

Prediction of the impact of climate change requires the response of carbon (C) flow in plant-soil systems to increased CO₂ to be understood. A mechanism by which grassland C sequestration might be altered was investigated by pulse-labelling Lolium perenne swards, which had been subject to CO₂ enrich...