Wastewater renovation in a slash pine pinus elliottii plantation subjected to prescribed burning

Red, J.T.; Nutter, W.L.

Journal of Environmental Quality 15(4): 351-356

1986


ISSN/ISBN: 0047-2425
DOI: 10.2134/jeq1986.00472425001500040007x
Accession: 006912825

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Abstract
Two experimental areas were established in an underdrained 16-yr-old slash pine (P. elliottii Mor.) plantation land treatment system receiving 2.5 cm/week of secondarily treated domestic wastewater. One of the experimental areas was subjected to a prescribed burn as a forest management practice. A high degree of wastewater renovation was achieved and the prescribed burn had no significant effect on wastewater renovation. Forest floor storage of K, Ca, Mg, and P was significantly increased from pretreatment levels due to wastewater irrigation. Prescribed burning had no effect on forest floor nutrient storage. Soil concentrations of total and available P, Ca, Mg, and K increased significantly in the surface soil horizon due to wastewater irrigation. Additional increases in the surface soil horizon of total P, Ca, Mg, and K concentration occurred due to burning. Wastewater irrigation resulted in significant reductions in soil acidity and total-Kjeldahl N concentration in the surface horizon. Prescribed burning altered species composition and density of the understory. No significant differences in overstory nutrient storage were observed due to treatment.

Wastewater renovation in a slash pine pinus elliottii plantation subjected to prescribed burning