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Long-term effects of stump harvesting and site preparation on pools and fluxes of soil carbon and nitrogen in central Sweden.
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- Author(s): Persson, Tryggve1 (AUTHOR) ; Lenoir, Lisette1 (AUTHOR); Vegerfors, Birgitta2 (AUTHOR)
- Source:
Scandinavian Journal of Forest Research. Apr2017, Vol. 32 Issue 3, p222-229. 8p.- Subject Terms:
- Source:
- Additional Information
- Abstract: Clear-cutting and subsequent site preparation is a common forest management practice in the Nordic countries. Slash and stumps have been suggested to replace fossil fuels in district heating plants. Stump/root removal from clear-cuts will reduce the amount of decomposable substrate in the soil and thus decrease soil CO2emission, but stump lifting is also supposed to stimulate CO2efflux and counteract CO2reduction. To determine the effects of stump/root harvesting in relation to site preparation (stumps retained) on pools and fluxes of carbon (C) and nitrogen (N) after a period of 20–30 years, soil sampling was performed in four pairs of stump/root harvesting (S) and patch scarification (P) stands in central Sweden in 2009. Stump/root harvesting resulted in a significantly lower soil C pool in the humus layer. Annual heterotrophic respiration (RH) in the whole soil profile was significantly lower after the S than after the P treatment, the mean difference being 38 ± 23 g CO2–C m−2 year−1(95% CI). This difference was larger than corresponding data from stump/root decomposition models (11–18 g CO2–C m−2 year−1), but both empirical and model data showed that stump/root harvesting will reduce heterotrophic soil CO2emissions to the atmosphere during the actual period. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Scandinavian Journal of Forest Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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