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Title: Estimating the unknown components of nutrient mass balances for forestry plantations in mine rehabilitation, Upper Hunter Valley, New South Wales, Australia

Abstract

Commercial forestry plantations as a postmining land use in the Upper Hunter Valley of New South Wales, Australia are restricted by both the poor nutrient availability of mining substrates and low regional rainfall. An experiment was conducted to investigate whether municipal waste products and saline groundwater from coal mining operations could improve early tree growth without impacting on the environment through salt accumulation and/or nutrient enrichment and changes in groundwater quality. Potential impacts were investigated by quantifying the nutrient cycling dynamics within the plantation using an input - output mass balance approach for exchangeable calcium, exchangeable magnesium, exchangeable potassium, exchangeable sodium, nitrogen, and phosphorus. Measured inputs to and outputs from the available nutrient pool in the 0 - 30 cm of the overburden subsystem were used to estimate the net effect of unmeasured inputs and outputs (termed 'residuals'). Residual values in the mass balance of the irrigated treatments demonstrated large leaching losses of exchangeable Ca, Mg, K, and Na. Between 96% and 103% of Na applied in saline mine-water irrigation was leached below the 0-30-cm soil profile zone. The fate of these salts beyond 30 cm is unknown, but results suggest that irrigation with saline mine water had minimal impactmore » on the substrate to 30 cm over the first 2 years since plantation establishment. Accumulations of N and P were detected for the substrate amendments, suggesting that organic amendments (particularly compost) retained the applied nutrients with very little associated losses, particularly through leaching.« less

Authors:
; ; ; ;  [1]
  1. University of New England, Armidale, NSW (Australia)
Publication Date:
OSTI Identifier:
20727794
Resource Type:
Journal Article
Resource Relation:
Journal Name: Environmental Management; Journal Volume: 37; Journal Issue: 4
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; FORESTRY; AUSTRALIA; NEW SOUTH WALES; LAND USE; LAND RECLAMATION; REVEGETATION; PLANT GROWTH; TREES; IRRIGATION; NUTRIENTS; GROUND WATER; SALINITY; COAL MINING; MUNICIPAL WASTES; OVERBURDEN; MINERAL WASTES

Citation Formats

Mercuri, A.M., Duggin, J.A., Daniel, H., Lockwood, P.V., and Grant, C.D. Estimating the unknown components of nutrient mass balances for forestry plantations in mine rehabilitation, Upper Hunter Valley, New South Wales, Australia. United States: N. p., 2006. Web. doi:10.1007/s00267-004-0245-0.
Mercuri, A.M., Duggin, J.A., Daniel, H., Lockwood, P.V., & Grant, C.D. Estimating the unknown components of nutrient mass balances for forestry plantations in mine rehabilitation, Upper Hunter Valley, New South Wales, Australia. United States. doi:10.1007/s00267-004-0245-0.
Mercuri, A.M., Duggin, J.A., Daniel, H., Lockwood, P.V., and Grant, C.D. Sat . "Estimating the unknown components of nutrient mass balances for forestry plantations in mine rehabilitation, Upper Hunter Valley, New South Wales, Australia". United States. doi:10.1007/s00267-004-0245-0.
@article{osti_20727794,
title = {Estimating the unknown components of nutrient mass balances for forestry plantations in mine rehabilitation, Upper Hunter Valley, New South Wales, Australia},
author = {Mercuri, A.M. and Duggin, J.A. and Daniel, H. and Lockwood, P.V. and Grant, C.D.},
abstractNote = {Commercial forestry plantations as a postmining land use in the Upper Hunter Valley of New South Wales, Australia are restricted by both the poor nutrient availability of mining substrates and low regional rainfall. An experiment was conducted to investigate whether municipal waste products and saline groundwater from coal mining operations could improve early tree growth without impacting on the environment through salt accumulation and/or nutrient enrichment and changes in groundwater quality. Potential impacts were investigated by quantifying the nutrient cycling dynamics within the plantation using an input - output mass balance approach for exchangeable calcium, exchangeable magnesium, exchangeable potassium, exchangeable sodium, nitrogen, and phosphorus. Measured inputs to and outputs from the available nutrient pool in the 0 - 30 cm of the overburden subsystem were used to estimate the net effect of unmeasured inputs and outputs (termed 'residuals'). Residual values in the mass balance of the irrigated treatments demonstrated large leaching losses of exchangeable Ca, Mg, K, and Na. Between 96% and 103% of Na applied in saline mine-water irrigation was leached below the 0-30-cm soil profile zone. The fate of these salts beyond 30 cm is unknown, but results suggest that irrigation with saline mine water had minimal impact on the substrate to 30 cm over the first 2 years since plantation establishment. Accumulations of N and P were detected for the substrate amendments, suggesting that organic amendments (particularly compost) retained the applied nutrients with very little associated losses, particularly through leaching.},
doi = {10.1007/s00267-004-0245-0},
journal = {Environmental Management},
number = 4,
volume = 37,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}