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The impact of land cover change on carbon and water cycling in the US Central Plains grasslands
Buck, Tyler
Buck, Tyler
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Abstract
Using the eddy covariance technique, the impact of land cover variability on carbon and water cycling was examined at three different grasslands in Northeast Kansas. One site 8 km north of Lawrence, Kansas at the Nelson Environmental Study Area (NESA) experiences woody-encroachment and is burned every three years. The remaining two sites are located at the Konza Prairie Biological Station, 8 km south of Manhattan, Kansas. KZU is located in an annual burned, non-grazed watershed in an upland area. K4B experiences woody encroachment and has prescribed burns every four years. Water-use efficiency was used to examine how the carbon and water cycling of these ecosystems respond to land cover change. Analysis suggest that the two grasslands experiencing woody-encroachment (NESA and K4B) show more efficient water use values than the grassland that is not (KZU). This may be due to a possible difference in rooting depth between woody-vegetation and grasses.
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Date
2010-07-30
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Publisher
University of Kansas
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Keywords
Atmospheric sciences, Eddy covariance, Grasslands, Land cover change, Water-use efficiency, Woody encroachment