@article{knoepp_forest_1997,
	title = {Forest management effects on surface soil carbon and nitrogen},
	volume = {61},
	url = {http://cwt33.ecology.uga.edu/publications/171.pdf},
	abstract = {Changes in surface soil C and N can result from forest management practices and may provide an index of impacts on long-term site productivity. Soil C and N were measured over time for five watersheds in the southern Appalachians: two aggrading hardwood forests, on south- and one north-facing, undisturbed since the 1920s; a white pine (Pinus strobus L.) plantation planted in 1956; and two regenerating hardwood forests, a whole-tree harvest in 1980, and a commercial sawlog harvest in 1977.  Soils on harvested watersheds were sampled before and for =15 yr after harvest.  Surface soil C concentration on the undisturbed watersheds varied significantly among sample years.  Concentrations fluctuated on the south-facing and decreased on the north-facing watershed.  The pattern for total N was similar.  Total N decreased significantly on the north-facing but was stable on the south-facing watershed.  In the white pine plantation, C increased while N concentrations decreased during the 20-yr period.  Soil C and N concentrations generally declined the first year following whole-tree harvest.  Fourteen years after cutting, C remained stable, while N was greater compared with reference watershed soils.  The commercial sawlog harvest resulted in large increases in surface soul C and N concentrations immediately after cutting.  Carbon levels remained elevated 17 yr following cutting.  Our data suggest that the forest management practices examined do not result in long-term decreases in soil C and N. However, the high interannual variation on all watersheds suggests that care must be taken in selecting control sites to determine long-term treatment impacts.},
	number = {3},
	journal = {Soil Science Society of America Journal},
	author = {Knoepp, Jennifer D. and Swank, W.T.},
	year = {1997},
	keywords = {CWT}
}

{"_id":"fBBGWR7rTjoRoAS5B","bibbaseid":"knoepp-swank-forestmanagementeffectsonsurfacesoilcarbonandnitrogen-1997","downloads":0,"creationDate":"2018-08-10T13:52:58.118Z","title":"Forest management effects on surface soil carbon and nitrogen","author_short":["Knoepp, J. D.","Swank, W."],"year":1997,"bibtype":"article","biburl":"https://utexas.box.com/shared/static/1aa39ptglchcfuw9c04ozm0pqjlxu4rw.bib","bibdata":{"bibtype":"article","type":"article","title":"Forest management effects on surface soil carbon and nitrogen","volume":"61","url":"http://cwt33.ecology.uga.edu/publications/171.pdf","abstract":"Changes in surface soil C and N can result from forest management practices and may provide an index of impacts on long-term site productivity. Soil C and N were measured over time for five watersheds in the southern Appalachians: two aggrading hardwood forests, on south- and one north-facing, undisturbed since the 1920s; a white pine (Pinus strobus L.) plantation planted in 1956; and two regenerating hardwood forests, a whole-tree harvest in 1980, and a commercial sawlog harvest in 1977. Soils on harvested watersheds were sampled before and for =15 yr after harvest. Surface soil C concentration on the undisturbed watersheds varied significantly among sample years. Concentrations fluctuated on the south-facing and decreased on the north-facing watershed. The pattern for total N was similar. Total N decreased significantly on the north-facing but was stable on the south-facing watershed. In the white pine plantation, C increased while N concentrations decreased during the 20-yr period. Soil C and N concentrations generally declined the first year following whole-tree harvest. Fourteen years after cutting, C remained stable, while N was greater compared with reference watershed soils. The commercial sawlog harvest resulted in large increases in surface soul C and N concentrations immediately after cutting. Carbon levels remained elevated 17 yr following cutting. Our data suggest that the forest management practices examined do not result in long-term decreases in soil C and N. However, the high interannual variation on all watersheds suggests that care must be taken in selecting control sites to determine long-term treatment impacts.","number":"3","journal":"Soil Science Society of America Journal","author":[{"propositions":[],"lastnames":["Knoepp"],"firstnames":["Jennifer","D."],"suffixes":[]},{"propositions":[],"lastnames":["Swank"],"firstnames":["W.T."],"suffixes":[]}],"year":"1997","keywords":"CWT","bibtex":"@article{knoepp_forest_1997,\n\ttitle = {Forest management effects on surface soil carbon and nitrogen},\n\tvolume = {61},\n\turl = {http://cwt33.ecology.uga.edu/publications/171.pdf},\n\tabstract = {Changes in surface soil C and N can result from forest management practices and may provide an index of impacts on long-term site productivity. Soil C and N were measured over time for five watersheds in the southern Appalachians: two aggrading hardwood forests, on south- and one north-facing, undisturbed since the 1920s; a white pine (Pinus strobus L.) plantation planted in 1956; and two regenerating hardwood forests, a whole-tree harvest in 1980, and a commercial sawlog harvest in 1977. Soils on harvested watersheds were sampled before and for =15 yr after harvest. Surface soil C concentration on the undisturbed watersheds varied significantly among sample years. Concentrations fluctuated on the south-facing and decreased on the north-facing watershed. The pattern for total N was similar. Total N decreased significantly on the north-facing but was stable on the south-facing watershed. In the white pine plantation, C increased while N concentrations decreased during the 20-yr period. Soil C and N concentrations generally declined the first year following whole-tree harvest. Fourteen years after cutting, C remained stable, while N was greater compared with reference watershed soils. The commercial sawlog harvest resulted in large increases in surface soul C and N concentrations immediately after cutting. Carbon levels remained elevated 17 yr following cutting. Our data suggest that the forest management practices examined do not result in long-term decreases in soil C and N. However, the high interannual variation on all watersheds suggests that care must be taken in selecting control sites to determine long-term treatment impacts.},\n\tnumber = {3},\n\tjournal = {Soil Science Society of America Journal},\n\tauthor = {Knoepp, Jennifer D. and Swank, W.T.},\n\tyear = {1997},\n\tkeywords = {CWT}\n}\n\n","author_short":["Knoepp, J. 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