Advanced

Impact of harvest intensity on long-term base cation budgets in Swedish forest soils

Akselsson, Cecilia LU ; Olle, Westling; Sverdrup, Harald LU ; Holmqvist, Johan LU ; Thelin, Gunnar LU ; Eva, Uggla and Gunnar, Malm (2007) In Water, Air, & Soil Pollution: Focus 7(1). p.201-210
Abstract (Swedish)
Abstract in Undetermined

The effects of harvesting on the long-term mass balances of calcium (Ca), magnesium (Mg) and potassium (K) were evaluated on a regional level in Sweden. A new high-resolution weathering database was used together with estimates of total deposition, losses through harvest and leaching. Estimates were made for pine and spruce separately and for two harvesting intensity scenarios: stem harvesting and whole-tree harvesting. The mass balance calculations showed net losses of Ca and Mg in almost the whole country for both scenarios. The losses were smaller for pine than for spruce. The K balances were mainly positive for pine but negative for spruce. Leaching was a main factor in the mass balances,... (More)
Abstract in Undetermined

The effects of harvesting on the long-term mass balances of calcium (Ca), magnesium (Mg) and potassium (K) were evaluated on a regional level in Sweden. A new high-resolution weathering database was used together with estimates of total deposition, losses through harvest and leaching. Estimates were made for pine and spruce separately and for two harvesting intensity scenarios: stem harvesting and whole-tree harvesting. The mass balance calculations showed net losses of Ca and Mg in almost the whole country for both scenarios. The losses were smaller for pine than for spruce. The K balances were mainly positive for pine but negative for spruce. Leaching was a main factor in the mass balances, especially for Ca and Mg. Whole-tree harvesting in spruce forests led to substantially higher net losses of K and Ca than stem harvesting, according to the calculations. In the whole-tree harvesting scenario in spruce forests the estimated yearly net losses of Ca, Mg and K corresponded to at least 5%, 8% and 3% of the pools of exchangeable base cations, respectively, at 25% of the analysed sites. If losses of this magnitude continue the depletion of the pools of Ca, Mg and K may lead to very low base saturation of the soils, possibly accompanied by negative effects on soil fertility, runoff water quality, tree vitality and tree growth within a forest rotation in parts of Sweden. Avoiding whole-tree harvesting can improve the situation substantially for K, but the losses of Ca and Mg will still be significant. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
in
Water, Air, & Soil Pollution: Focus
volume
7
issue
1
pages
201 - 210
publisher
Springer
external identifiers
  • scopus:34247565044
ISSN
1573-2940
DOI
10.1007/s11267-006-9106-6
language
English
LU publication?
no
id
9811c1b8-4b2f-47bd-a55c-7d889f9aa1d6 (old id 1745959)
date added to LUP
2011-11-17 18:06:47
date last changed
2017-10-08 04:22:16
@article{9811c1b8-4b2f-47bd-a55c-7d889f9aa1d6,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
The effects of harvesting on the long-term mass balances of calcium (Ca), magnesium (Mg) and potassium (K) were evaluated on a regional level in Sweden. A new high-resolution weathering database was used together with estimates of total deposition, losses through harvest and leaching. Estimates were made for pine and spruce separately and for two harvesting intensity scenarios: stem harvesting and whole-tree harvesting. The mass balance calculations showed net losses of Ca and Mg in almost the whole country for both scenarios. The losses were smaller for pine than for spruce. The K balances were mainly positive for pine but negative for spruce. Leaching was a main factor in the mass balances, especially for Ca and Mg. Whole-tree harvesting in spruce forests led to substantially higher net losses of K and Ca than stem harvesting, according to the calculations. In the whole-tree harvesting scenario in spruce forests the estimated yearly net losses of Ca, Mg and K corresponded to at least 5%, 8% and 3% of the pools of exchangeable base cations, respectively, at 25% of the analysed sites. If losses of this magnitude continue the depletion of the pools of Ca, Mg and K may lead to very low base saturation of the soils, possibly accompanied by negative effects on soil fertility, runoff water quality, tree vitality and tree growth within a forest rotation in parts of Sweden. Avoiding whole-tree harvesting can improve the situation substantially for K, but the losses of Ca and Mg will still be significant.},
  author       = {Akselsson, Cecilia and Olle, Westling and Sverdrup, Harald and Holmqvist, Johan and Thelin, Gunnar and Eva, Uggla and Gunnar, Malm},
  issn         = {1573-2940},
  language     = {eng},
  number       = {1},
  pages        = {201--210},
  publisher    = {Springer},
  series       = {Water, Air, & Soil Pollution: Focus},
  title        = {Impact of harvest intensity on long-term base cation budgets in Swedish forest soils},
  url          = {http://dx.doi.org/10.1007/s11267-006-9106-6},
  volume       = {7},
  year         = {2007},
}