Home About Browse Search
Svenska


Spatially comprehensive data for forestry scenario analysis

consequences of errors and methods to enhance usability

Barth, Andreas (2007). Spatially comprehensive data for forestry scenario analysis. Diss. (sammanfattning/summary) Umeå : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2007:101
ISBN 978-91-85913-00-8
[Doctoral thesis]

[img]
Preview
PDF
1MB

Abstract

This thesis focuses on the use of forest data for national level policy making. Three major issues were considered: (i) to determine typical requirements of data in forestry scenario analysis, (ii) to evaluate and further develop methods to determine data requirements, and (iii) to develop methods that improve data usability in forestry scenario analysis. Increasingly, the trend is to use spatially comprehensive data as a basis for forestry scenario analysis. Compared to traditional approaches, often limited to sample data, this allows for a broader scope. This is needed since sustainable forestry today must encompass economical and ecological, as well as social perspectives. Different approaches to linking data acquisition strategies with decisions that typically are based on forestry scenario analyses were used in the determination of data requirements. In Paper I, a qualitative framework was developed and applied. The conclusions were that none of the currently used Swedish data acquisition strategies were able to provide data for adequate multi-resource forestry scenario analysis at national level. In Papers II and III, two quantitative approaches were used for the evaluation of sample-plot imputations; using a decision support system the quantitative consequences of errors and cost-plus-loss with simulations were considered. From Paper II it was clear that traditional approaches to acquiring spatially comprehensive data may lead to severe errors in scenario analyses. Both papers concluded that improvements are required in the methodology of assessing the data. In Paper IV, an analytical cost-plus-loss approach was used to address the issue of decision-making at the national level linked to national forest inventories. The conclusion was that the current level of Swedish national forest inventory is motivated fully by the role of the inventory to provide information for national level timber harvesting planning, whereas the inventory serves many other purposes as well. In Papers V and VI, methods were developed and tested regarding how the usability of spatially comprehensive data for national level forestry scenario analysis can be enhanced. In Paper V an algorithm for spatially consistent imputation within forest stands was developed and found to deliver good results in a case study. In Paper VI, a framework for landscape level imputation aiming at preserving overall composition while enhancing spatial configuration was outlined and tested. A core component of the framework was a restricted imputation algorithm that ensured that the classical imputation problem of data “tending towards the mean” was avoided. Case studies showed promising results, but it is clear that the methodological tool-kit must be further developed before it can be applied in practice.

Authors/Creators:Barth, Andreas
Title:Spatially comprehensive data for forestry scenario analysis
Subtitle:consequences of errors and methods to enhance usability
Year of publishing :2007
Volume:2007:101
Number of Pages:74
Papers/manuscripts:
NumberReferences
ALLI. Barth, A., Lind, T., Petersson, H. & Ståhl, G. 2006. A framework for evaluating data acquisition strategies for analysis of sustainable forestry at national level. Scandinavian Journal of Forest Research 21: 94-105. II. Barth, A., Duvemo, K. & Wallerman, J. 2007. Evaluation of sample plot imputation in sub-national forestry scenario analysis. Manuscript. III. Duvemo, K., Barth, A. & Wallerman, J. 2007. Evaluating sample plot imputation techniques as input in forest management planning. Canadian Journal of Forest Research (In press). IV. Barth, A. & Ståhl, G. 2007. Determining sampling size in a national forest inventory by cost-plus-loss analysis. Manuscript. V. Barth, A., Wallerman, J. & Ståhl, G. 2007. Spatially consistent nearest neighbor imputation of forest stand data. Manuscript. VI. Barth, A., Lind, T. & Ståhl, G. 2007. Improving spatial consistency in landscape level data for forestry scenario analysis. Manuscript.
Place of Publication:Umeå
ISBN for printed version:978-91-85913-00-8
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agrovoc terms:forest inventories, planning, decision making, decision support, data collection, data analysis
Keywords:forest inventory, data acquisition, forest management, decision support systems, forestry scenario analysis, data requirements, national level forest planning, decision-making, policy-making, cost-plus-loss analysis, medium-resolution satellite data, laser scanner data, national forest inventory, data usability, optimisation, imputation
URN:NBN:urn:nbn:se:slu:epsilon-1863
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-1863
ID Code:1613
Department:(S) > Dept. of Forest Resource Management
(NL, NJ) > Dept. of Forest Resource Management
Deposited By: Andreas Barth
Deposited On:30 Oct 2007 00:00
Metadata Last Modified:02 Dec 2014 10:13

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits