Soil-solution chemistry in black locust, pine/mixed-hardwoods and oak/hickory forest stands in the southern Appalachians, U.S.A.

Content Provider	Semantic Scholar
Author	Montagnini, Florencia Haines, Bruce L. Swank, Wayne T.
Copyright Year	1991
Abstract	Abstract Soil-solution chemistry was measured over a 15-month period in three forest stands of contrasting nitrogen mineralization and nitrification rates in the southern Appalachians of North Carolina, U.S.A., using porous-cup lysimeters. In a black-locust-dominated stand, soil solution NO3N was 3.73 and 5.04 mg l−1 at 30- and 60-cm depth respectively, and dissolved organic N ( don ) was 0.718 and 0.582 mg l−1 respectively. Values at 30 and 60 cm for a pine/mixed-hardwood stand were 0.032 and 0.058 mg l−1 NO3N, and 0.201 and 0.168 mg l−1 don (values are means over the whole duration of the study). At both depths, soil solution conductivity, pH, Ca, Mg, K and PO4P were higher in black locust than in pine/mixed-hardwoods, and there were no differences in soil solution Na. In an oak/hickory stand, soil solution NO3N at 30-cm depth was 0.008 mg l−1, and don was 0.357 mg l−1. At 30-cm depth, soil-solution conductivity, Ca, Mg and PO4P were higher in black locust than in oak-hickory, with no differences in pH, K and Na; don , pH and K were higher in oak/hickory than in pine/mixed-hardwoods. In the oak/hickory and pine/mixed-hardwoods forest stands, with relatively lower soil N turnover rates, don was a major portion of soil solution N.
Starting Page	199
Ending Page	208
Page Count	10
File Format	PDF HTM / HTML
DOI	10.1016/0378-1127(91)90039-X
Volume Number	40
Alternate Webpage(s)	http://coweeta.uga.edu/publications/647.pdf
Alternate Webpage(s)	http://coweeta.uga.edu/publications/pubs_oct10/647.pdf
Alternate Webpage(s)	https://doi.org/10.1016/0378-1127%2891%2990039-X
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article