Journal of the American Water Resources Association
نویسندگان
چکیده
Floodplain forests directly influence water quality by serving as sinks, sources, or transformers of nutrients. Increases in the demand for timber raise the question of how silvicultural disturbance may affect this funct ion. The object ive of this research was to compare biogeochemical relationships between undisturbed vs. disturbed conditions in a floodplain forest. A randomized complete b lock des ign cons is t ing of three b locks and two treatments (partial harvest and undisturbed) was installed on the Flint River floodplain, Georgia. The partial cut was conducted during September-October 1993. Automated water samplers were situated to sample during f lood events as sheetf low entered and exi ted treatment plots during the 1994, 1996 and 1996 flood seasons. Prevs. postcontact comparisons indicated that the undisturbed floodplain has minimal influence on water chemistry at this scale of measurement . Al though the part ia l harvest on an 8-ha sca l e had min imal effect upon sheetflow water chemistry for three years following harvest, the data suggest that harvests may stimulate a minor increase in Ca and K sink activity. (EEY TERMS: floodplain biogeochemistry, forested floodplain; silviculture; water chemistry.)
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