Increasing variability of rainfall patterns requires detailed understanding of the pathways of water loss from ecosystems to optimize carbon uptake and management choices. In the current study we characterized the usability of three alternative methods of different rigor for quantifying stand-level evapotranspiration (ET), partitioned …
Journal: Forest Science, Volume 58 (5): 497-512 (2012). DOI: 10.5849/forsci.11-051 Sites: US-NC1, US-NC2
Deep root water uptake and hydraulic redistribution (HR) have been shown to play a major role in forest ecosystems during drought, but little is known about the impact of climate change, fertilization and soil characteristics on HR and its consequences on water and carbon fluxes. Using data from three mid-rotation loblolly pine plantations, …
Journal: Tree Physiology, Volume 32 (6): 707-723 (2012). DOI: 10.1093/treephys/tps018 Sites: US-NC1, US-NC2
Timber harvests remove a significant portion of ecosystem carbon. While some of the wood products moved off-site may last past the harvest cycle of the particular forest crop, the effect of the episodic disturbances …
Journal: Global Change Biology, Volume 18 (10): 3186-3201 (2012). DOI: 10.1111/j.1365-2486.2012.02776.x Sites: US-NC1, US-NC2
During 2005–2007, we used the eddy covariance and associated hydrometric methods to construct energy and water budgets along a chronosequence of loblolly pine (Pinus taeda) plantations that included a mid-rotation stand (LP) (i.e., 13–15 years old) and a recently established stand on a clearcut site (CC) (i.e., 4–6 …
Journal: Forest Ecology And Management, Volume 259 (7): 1299-1310 (2010). DOI: 10.1016/j.foreco.2009.09.016 Sites: US-NC1, US-NC2
- Hydraulic redistribution (HR) of water via roots from moist to drier portions of the soil occurs in many ecosystems, potentially influencing both water use and carbon assimilation.
- By measuring soil water content, sap flow and eddy covariance, we investigated the temporal variability of …
Journal: New Phytologist, Volume 187 (1): 171-183 (2010). DOI: 10.1111/j.1469-8137.2010.03245.x Sites: US-NC1, US-NC2
Full accounting of ecosystem carbon (C) pools and fluxes in coastal plain ecosystems remains less studied compared with upland systems, even though the C stocks in these systems …
Journal: Global Change Biology, Volume 16 (1): 272-287 (2010). DOI: 10.1111/j.1365-2486.2009.01928.x Sites: US-NC2