Ten-year decomposition in a loblolly pine forest

2002 ◽  
Vol 32 (12) ◽  
pp. 2231-2235 ◽  
Author(s):  
Dan Binkley
Keyword(s):  
Organic Matter ◽  
Loblolly Pine ◽  
Forest Floor ◽  
Nitrogen Loss ◽  
Titratable Acidity ◽  
Original Material ◽  
Loss Of Mass ◽  
Pinus Taeda L ◽  
Future Work

A litter sandwich approach was used to examine the loss of mass, acidity, and nutrients through 10 years of decomposition in a stand of loblolly pine (Pinus taeda L.). Each year, a new layer of 3-mm mesh fiberglass was placed on the annual accumulation of litterfall. Ten years of decomposition led to a loss of about 80% of the litter organic matter (giving a decomposition constant of 0.1655), which predicted a steady-state mass of the forest floor within 10% of the observed value. The pH (in 0.1 M KCl) showed little variation over time, ranging just from 3.2 to 3.5. The decline in titratable acidity appeared related primarily to the loss of organic matter rather than to any change in the acid characteristics of the material. Nitrogen loss was slow; the 10-year-old cohort of material contained 70% as much nitrogen as the original material. The loss of other nutrients was rapid, exceeding 80% loss by 6 years for phosphorus, potassium, calcium, and magnesium. The litter-sandwich method for examining decomposition is an easy, long-term approach that appeared to provide reasonable representation of the dynamics of unconfined forest floor materials. Future work should test this method for examining the decomposition effects of litter quality, nutrient supply, and environmental conditions.

Long-term effects of stand density management and genotype on wood properties of loblolly pine (Pinus taeda L.) in the mid-South USA

2021 ◽  
Vol 491 ◽  
pp. 119176
Author(s):  
Michael A. Blazier ◽  
Thomas Hennessey ◽  
Laurence Schimleck ◽  
Scott Abbey ◽  
Ryan Holbrook ◽  
...  
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Stand Density ◽  
Wood Properties ◽  
Long Term Effects ◽  
Stand Density Management ◽  
Pinus Taeda L

Removal of Organic Matter from the Forest Floor in Loblolly Pine Plantations Increased Ground-Layer Richness and Diversity 16 Years after Treatment

2015 ◽  
Vol 61 (3) ◽  
pp. 554-558
Author(s):  
Luben D. Dimov ◽  
Kmberly J. Howard ◽  
Zakiya H. Leggett ◽  
Eric B. Sucre ◽  
Loretta L. Weninegar
Keyword(s):  
Organic Matter ◽  
Loblolly Pine ◽  
Forest Floor ◽  
Pine Plantations ◽  
Ground Layer

An Economic Evaluation of the Use of Oust for Herbaceous Weed Control in Loblolly Pine Plantations

1992 ◽  
Vol 16 (1) ◽  
pp. 40-47 ◽  
Author(s):  
Rodney L. Busby
Keyword(s):  
Pinus Taeda ◽  
Weed Control ◽  
Loblolly Pine ◽  
Economic Returns ◽  
Stand Growth ◽  
Growth Increments ◽  
Long Term Effect ◽  
Herbaceous Weed Control ◽  
Pinus Taeda L

Abstract Herbaceous weed control using Oust (sulfometuron methyl²) is economically efficient in loblolly pine (Pinus taeda L.) plantations given reasonable expectations about the long-term effect of the treatment on stand growth. Increases in the sizes of the growth increments following treatment that have been reported in the literature, and the economic returns this analysis shows are possible, indicate that investment in herbaceous weed control can be a prudent silvicultural option. South. J. Appl. For. 16(1):40-47.

Influence of fertilization, weed control, and pine litter on loblolly pine growth and productivity and understory plant development through 12 growing seasons

2003 ◽  
Vol 33 (10) ◽  
pp. 1974-1982 ◽  
Author(s):  
James D Haywood ◽  
Jeffery C Goelz ◽  
Mary A. Sword Sayer ◽  
Allan E Tiarks
Keyword(s):  
Loblolly Pine ◽  
Dominant Factor ◽  
Broadcast Application ◽  
Growing Seasons ◽  
Fertilization Effect ◽  
Loam Soil ◽  
Understory Plant ◽  
Pinus Taeda L ◽  
A Minor

On a silt loam soil in central Louisiana, three cultural treatments were applied to a seedling loblolly pine (Pinus taeda L.) plantation. The treatments were in a 2 × 2 × 2 factorial design: (1) no fertilization or a broadcast application of 177 kg N/ha and 151 kg P/ha; (2) no herbicides applied or broadcast or spot applications of hexazinone, sulfometuron methyl, or glyphosate herbicides and felling as required to control competing vegetation during the first three growing seasons; and (3) no litter applied or broadcast application of pine litter to form a 10 to 15 cm layer in the first growing season. Through 12 growing seasons, the fertilization or herbicide treatment significantly increased stand growth (α = 0.05), and these two treatments had an additive effect (no treatments, 209 m3/ha; fertilization, 328 m3/ha; herbicide, 280 m3/ha; fertilization and herbicide, 362 m3/ha). However, because litter application probably had a minor fertilization effect, the fertilizer and litter combination produced the greatest yield (370 m3/ha). The herbicide and litter combination adversely affected pine survival, and so applying all three treatments was no more effective than fertilization alone. The loblolly pine overstory was the dominant factor influencing the long-term development of the understory.

Effects of organic matter removal, soil compaction, and vegetation control on 5-year seedling performance: a regional comparison of Long-Term Soil Productivity sites

2006 ◽  
Vol 36 (3) ◽  
pp. 529-550 ◽  
Author(s):  
Robert L Fleming ◽  
Robert F Powers ◽  
Neil W Foster ◽  
J Marty Kranabetter ◽  
D Andrew Scott ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Compaction ◽  
Forest Floor ◽  
Soil Productivity ◽  
Individual Tree ◽  
Seedling Performance ◽  
Organic Matter Removal ◽  
Vegetation Control ◽  
Wide Range

We examined fifth-year seedling response to soil disturbance and vegetation control at 42 experimental locations representing 25 replicated studies within the North American Long-Term Soil Productivity (LTSP) program. These studies share a common experimental design while encompassing a wide range of climate, site conditions, and forest types. Whole-tree harvest had limited effects on planted seedling performance compared with the effects of stem-only harvest (the control); slight increases in survival were usually offset by decreases in growth. Forest-floor removal improved seedling survival and increased growth in Mediterranean climates, but reduced growth on productive, nutrient-limited, warm–humid sites. Soil compaction with intact forest floors usually benefited conifer survival and growth, regardless of climate or species. Compaction combined with forest-floor removal generally increased survival, had limited effects on individual tree growth, and increased stand growth in Mediterranean climates. Vegetation control benefited seedling growth in all treatments, particularly on more productive sites, but did not affect survival or alter the relative impact of organic matter removal and compaction on growth. Organic matter removal increased aspen coppice densities and, as with compaction, reduced aspen growth.

Soil CO2 evolution and root respiration in 11 year-old loblolly pine (Pinus taeda) plantations as affected by moisture and nutrient availability

2000 ◽  
Vol 30 (3) ◽  
pp. 347-359 ◽  
Author(s):  
C A Maier ◽  
L W Kress
Keyword(s):  
Carbon Source ◽  
Soil Temperature ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Forest Floor ◽  
Root Respiration ◽  
Carbon Sink ◽  
Annual Carbon ◽  
The Difference ◽  
Pinus Taeda L

We measured soil CO2 evolution rates with (Sff) and without (Sms) the forest floor litter and root respiration monthly in 11-year-old loblolly pine (Pinus taeda L.) plantations during the fourth year of fertilization and irrigation treatments. Values of Sff ranged from less than 1 µmol·m-2·s-1 during the winter to greater than 5 µmol·m-2·s-1 in late spring. Average Sff was significantly greater in unfertilized relative to the fertilized stands; however, there was no difference in average Sms among treatments. Soil temperature and the mass of the forest floor (litter) explained most of the difference in Sff among treatments. Soil temperature and volumetric water content accounted for 70% of the seasonal variation in Sff. Annual carbon efflux from the soil averaged 14.1 Mg·ha-1 per year for all treatments. Most of the evolved carbon was derived from root respiration (50-73%). Net ecosystem productivity was -1.1 and 6.9 Mg C·ha-1 per year for the unfertilized and fertilized stands, respectively. At age 11, the unfertilized stands were functioning as a net carbon source, while fertilized stands were a strong carbon sink. It was concluded that fertilization could decrease the time for a young pine plantation to change from a carbon source to a carbon sink.

Soil Properties and Pine Growth Affected by Site Preparation after Clearcutting

1985 ◽  
Vol 9 (1) ◽  
pp. 40-43 ◽  
Author(s):  
J. J. Stransky ◽  
J. H. Roese ◽  
K. G. Watterston
Keyword(s):  
Organic Matter ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Soil Nutrient ◽  
Site Preparation ◽  
Soil Samples ◽  
The Other ◽  
Pine Seedlings ◽  
Southeast Texas ◽  
Pinus Taeda L

Abstract A pine-hardwood sawtimber stand in southeast Texas was clearcut in September 1972. Random plots were burned, chopped, KG-bladed, or left untreated. In the spring of 1974, 1-0 loblolly pine seedlings (Pinus taeda L.) were handplanted at 8 by 10 foot spacing. Data from soil samples, taken from the 0-5 inch depth before clearcutting and 1, 3, and 5 years after site preparation showed that burning appeared to have changed soil nutrient levels the least. Of the two mechanical treatments, KG-blading altered the chemical composition of the soil most, probably because topsoil organic matter was removed. Planted pines survived and grew best on mechanically prepared areas, producing 1.5 to 3.3 times more cubic-foot volume per acre than either of the other treatments by the end of the eighth year.

Long-term litter input manipulation effects on production and properties of dissolved organic matter in the forest floor of a Norway spruce stand

2012 ◽  
Vol 355 (1-2) ◽  
pp. 407-416 ◽  
Author(s):  
Thimo Klotzbücher ◽  
Klaus Kaiser ◽  
Christoph Stepper ◽  
Emiel van Loon ◽  
Pedro Gerstberger ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Norway Spruce ◽  
Forest Floor ◽  
Litter Input

scholarly journals Wood properties and ring width responses to long-term atmospheric CO2 enrichment in field-grown loblolly pine (Pinus taeda L.)

1999 ◽  
Vol 22 (2) ◽  
pp. 213-219 ◽  
Author(s):  
F. W. TELEWSKI ◽  
R. T. SWANSON ◽  
B. R. STRAIN ◽  
J. M. BURNS
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Ring Width ◽  
Co2 Enrichment ◽  
Wood Properties ◽  
Atmospheric Co2 ◽  
Pinus Taeda L
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