Impact of Harvesting and Site Preparation on Physical Properties of Piedmont Forest Soils

Gent, J. A.; Ballard, R.; Hassan, Awatif E.; Cassel, D. K.

doi:10.2136/sssaj1984.03615995004800010032x

Cited by 59 publications

(26 citation statements)

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“…Similar to observations f?om other trafficking studies (Gent et al,1984;Burger et al, 1985), significant (P < 0.05) increases in pb were observed between pre-and post-harvest samples for many of the depth intervaltrafficking class combinations at all three sites (Table 4). Similar to other studies (Morris and Campbell, 1991), we observed that pb increased not only in skid trails but also within relatively less trafficked areas (Table 4).…”

Section: Traficking Eflectssupporting

confidence: 87%

“…The 40 cm depth was chosen because previous studies in similar soils suggested timber harvesting impacts do not occur below this depth (Gent et al, 1984;Carter et al, 2000). In each sampling area, a recording cone penetrometer was used to measure soil strength at 2.5-cm increments down to a 40-cm depth.…”

Section: Lncatiotl Qf Sartrpliry Arcac and Site Distrrrl~arm-clarmmentioning

confidence: 99%

“…Gent et al (1984) estimated that harvesting caused increases in pt, and decreases in hydraulic conductivity (KS) within the upper 0.20 m.Although disking reduced pb in the upper 0.07 to 0.12 m, these authors suggested the effects of site-preparation traffic below this depth may result in reduced root growth. Burger et al (1985) found increases in p,, caused by trafficking in the top 0.06 m; however, no effects were seen below this depth.…”

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confidence: 99%

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Timber Harvesting Effects on Spatial Variability of Southeastern U.S. Piedmont Soil Properties

Shaw

Carter

2002

Soil Science

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Site-specific forestry requires detailed characterization of the spatial distribution of forest soil properties and the magnitude of harvesting impacts in order to prescribe appropriate management schemes. Furthermore, evaluation of the effects of timber harvesting on soil properties conducted on a landscape scale improves the interpretive value of soil survey data. Questions exist regarding the extent and spatial distribution of the effects of timber harvesting on eroded soils of the Alabama Piedmont. We evaluated the impacts of clear-cut harvesting on the temporal and spatial variability of bulk density (p,), soil strength, and water content (0,) at three sites in the Alabama Piedmont where timber was predominantly mature plantation stands of loblolly pine (Pinus taeda L.). Preharvest spatial variability of texture, surface horizon thickness, and soil organic carbon (SOC) within single soi: mapping delineations was also evaluated. Soils were moderately to severely eroded aud classified in fine, kaolinitic, thermic Typic and Rhcdic Kanhapludult and Kandiudult families. Although significant increases (P < 0.05) in p,, were observed after timber harvesting for some of the trafficking class-depth interval ccmbinations at all sites, the largest increases were observed at the moderately eroded site. Harvesting timber increased soil strength by 25.1% on the moderately eroded site, with increases occurring to a 40-cm depth in skid trails. Results suggested the degree of harvesting impacts were erosion phase dependent, with greater impacts on moderately versus severely eroded soils. Geostatistical analyses indicated that pre-harvest % clay and surface thickness were more highly spatially correlated than preharvest SOC, which may be related to erosion processes. Analyses also suggested harvesting slightly increased the overall spatial variablity of p,.,, soil strength, and 0,. These results suggest that the establishment of site-specific forest tillage zones to ameliorate compaction may be impractical to implement because of the increases in spatial variability of these properties. (Soil Science 2002;167:288-302)

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Section: Traficking Eflectssupporting

confidence: 87%

Section: Lncatiotl Qf Sartrpliry Arcac and Site Distrrrl~arm-clarmmentioning

confidence: 99%

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confidence: 99%

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Timber Harvesting Effects on Spatial Variability of Southeastern U.S. Piedmont Soil Properties

Shaw

Carter

2002

Soil Science

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“…Release of water at soil water contents less than field capacity is controlled by particle size distribution. While some mixing of soil horizons can occur during upland forest site preparation that includes piling (Gent et al, 1984;Hoadley, 2014), the influence on particle size distribution within the profile is small compared to the influence on macroporosity. When macropores are created by tillage, the soil water release curve (soil water content plotted against soil water potential) is shifted, but the curve shape is largely retained since particle size distribution, which largely controls the shape of the water retention curve (Ghanbarian-Alavijeh et al, 2010;Zhuang et al, 2001), is not greatly affected.…”

Section: Discussionmentioning

confidence: 99%

Loblolly Pine (Pinus taeda L.) Seedling Growth Response to Site Preparation Tillage on Upland Sites

Furtado¹,

Morris

Markewitz

2016

Soil Science Society of America Journal

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T he southeastern United States is the world's largest industrial wood producer, with approximately 16 million hectares of industrial pine timberland (Prestemon and Abt, 2002;Haynes, 2002;Smith et al., 2004). Wood demand from this region is expected to increase, and the land base dedicated to silvicultural practices is expected to continue to shift from natural forests owned by nonindustrial private landowners to pine plantations (Allen et al., 2005). Thus, the role of intensive forest management to maintain and increase wood production is increasing in significance (Borders and Bailey, 2001;Fox, 2000;Martin and Shiver, 2002).Since the 1950s, mechanical site preparation has been considered essential to southern pine plantation management (Martin and Shiver, 2002 • Growth responses to tillage occur across fertilization and competition control treatments.• Tree size was not well predicted by mean soil resistance.• Soil resistance in the 0-to 0.15-m depth increment delineated an upper bound for tree size two years after planting.

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“…In southeastern forests, bedding radically alters the forest floor by mechanically creating raised beds to plant plantation seedlings. Physical disturbance may remove organic material, therefore altering bulk density and disrupting the nitrogen cycle as well as leading to accelerated soil erosion (Fox et al 1986;Gent et al 1984;Grigal 2000;Jandl et al 2007;Jurgensen et al 1997;Mclaughlin et al 2000). Surface disruption can also cause lingering changes to soil biochemistry and microbial communities (Amaranthus et al 1989;Hartmann et al 2012).…”

Section: Soil Change In Forest Landsmentioning

confidence: 99%

Human Land-Use and Soil Change

Wills

Williams

Duniway

et al. 2016

The Soils of the USA

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Impact of Harvesting and Site Preparation on Physical Properties of Piedmont Forest Soils

Cited by 59 publications

References 0 publications

Timber Harvesting Effects on Spatial Variability of Southeastern U.S. Piedmont Soil Properties

Timber Harvesting Effects on Spatial Variability of Southeastern U.S. Piedmont Soil Properties

Loblolly Pine (Pinus taeda L.) Seedling Growth Response to Site Preparation Tillage on Upland Sites

Human Land-Use and Soil Change

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