IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 1: Extremes and Variability : Variability in soil carbon fluxes in intensively managed agricultural landscapes
Variability in soil carbon fluxes in intensively managed agricultural landscapes
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Experimental plots consisting of a corn-soybean rotation are being used to investigate the variation of soil respiration amongst common agricultural land management practices. Initially the hillslope position (backslope, footslope and toeslope) was investigated to determine the location of maximum CO2 fluxes by collecting soil respiration, moisture, and temperature measurements at each position. Results showed that carbon assimilation rates and soil moisture increased downhill whereas soil temperature decreased. Based on these findings the experimental plots were constructed at the floodplains (toeslope) and have been monitored throughout the plant life cycles of corn and soybeans. Preliminary findings show that corn average assimilation rates were higher than soybeans during the first 30 days of plant growth, but were comparable after 45 days.
File Size : 437,865 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 1: Extremes and Variability
Date Published : 01/07/2011
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