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Spatial aspects of forest and forest soil management

Stendahl, Johan (2001). Spatial aspects of forest and forest soil management. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae. Silvestria, 1401-6230
ISBN 91-576-6083-2
[Doctoral thesis]

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Abstract

This thesis deals with spatial aspects of forests and forest soils at the regional scale and at the small scale within forest stands. Two approaches were taken to address this topic. At the regional level an investigation was made to determine the influence of soil mineralogy on the variations in site quality. Site quality generally benefits from easily weathered minerals, although the relationship between site quality and soil mineralogy is complex and depend on the overall geology. The potential to predict site quality from soil mineralogy is improved if it is made within geological regions. An intensive sampling was made in three forest stands of different ages to determine the amount of within-stand variation, the extent to which it is spatially structured, the scales at which spatial variation exists, and the effort needed to estimate it. The results indicate that there is substantial variation within forest stands in both tree and soil properties. For many properties the variation was found to be spatially correlated at distances from 10 m to 170 m, which corresponds to average patch size. Mean diameter and tree height had rather strong spatial correlation, whereas for basal area and stem density it was weak. Estimations by kriging gave poor results for most forest properties unless sampling intensity was high, which would require other data collection methods than traditional field sampling. Harvester based data collection is proposed as one approach to accomplish this. Data collected by the harvester in a thinning was used to estimate the forest properties of the stand.

Authors/Creators:Stendahl, Johan
Title:Spatial aspects of forest and forest soil management
Year of publishing :2001
Number:199
Number of Pages:38
Publisher:Swedish University of Agricultural Sciences
ISBN for printed version:91-576-6083-2
ISSN:1401-6230
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
Keywords:soil-site study, soil mineralogy, spatial variation, within-stand, geostatistics, kriging, forestry planning
URN:NBN:urn:nbn:se:slu:epsilon-p-107987
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107987
ID Code:17738
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Forest Soils (until 081001)
Deposited By: SLUpub Connector
Deposited On:07 Oct 2020 10:31
Metadata Last Modified:20 Oct 2020 08:17

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