Current issue: 54(2)

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Silva Fennica 1926-1997
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Acta Forestalia Fennica
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Articles containing the keyword 'databases'.

Category: Review article

article id 38, category Review article
Matieu Henry, Nicolas Picard, Carlo Trotta, Raphaël J. Manlay, Riccardo Valentini, Martial Bernoux, Laurent Saint-André. (2011). Estimating tree biomass of sub-Saharan African forests: a review of available allometric equations. Silva Fennica vol. 45 no. 3B article id 38. https://doi.org/10.14214/sf.38
In response to the growing interest in estimating carbon stocks in forests, available allometric equations have been compiled for sub-Saharan Africa. Tree, sprout and stand volume and biomass equations were reviewed. The 850 equations and 125 related references were incorporated into an open-access database on the Carboafrica website (http://www.carboafrica.net). The collected information provides a basic tool for the estimation of biomass and carbon stocks and other purposes, such as bioenergy and fodder supply assessment. A Tier-method approach was developed to illustrate the possible use of the equations. Current available biomass expansion factors that are used to convert a volume to the total aboveground biomass appear to be limited; incomplete species-specific allometric equations are preferred to generalised equations. The analysis of the database highlighted important gaps in available tools to assess forest carbon stocks and changes in these stocks. A quality control assessment revealed that 22% of the equations were misreported and recommendations were proposed to guide further research. Further statistical analyses, such as the Bayesian approach, would help to produce more accurate biomass estimates.
  • Henry, IRD, UMR Eco&Sols, Montpellier SupAgro, 2 place Viala, 34060 Montpellier, France; Di.S.A.F.Ri, Università degli Studi della Tuscia, Viterbo, Italy; and AgroParisTech-ENGREF, GEEFT, Montpellier, France ORCID ID:E-mail: henry@unitus.it (email)
  • Picard, CIRAD, Montpellier, France ORCID ID:E-mail:
  • Trotta, Di.S.A.F.Ri, Università degli Studi della Tuscia, Viterbo, Italy ORCID ID:E-mail:
  • Manlay, IRD, UMR Eco&Sols, Montpellier SupAgro, 2 place Viala, 34060 Montpellier, France; and AgroParisTech-ENGREF, GEEFT, Montpellier, France ORCID ID:E-mail:
  • Valentini, Di.S.A.F.Ri, Università degli Studi della Tuscia, Viterbo, Italy ORCID ID:E-mail:
  • Bernoux, IRD, UMR Eco&Sols, Montpellier SupAgro, 2 place Viala, 34060 Montpellier, France ORCID ID:E-mail:
  • Saint-André, CIRAD, Montpellier, France; and INRA, UR1138, Biogeochimie des Ecosystèmes Forestiers, Champenoux, France ORCID ID:E-mail:

Category: Article

article id 5479, category Article
Douglas K. Loh, Hannu Saarenmaa. (1992). Design of integrated forest resource information systems. Silva Fennica vol. 26 no. 2 article id 5479. https://doi.org/10.14214/sf.a15640

Managing forests and other natural resources requires merging of data and knowledge from many fields. Research efforts in many countries have simultaneously aimed at computer applications to help managing the large amounts of data involved and the complexities of decision making. This has invariably led to large integrated systems. An integrated system is software that consists of modules for various tasks in natural resource management, spatial analysis, simulation and optimization, diagnostic reasoning, levels, and communicating with the user.

The paper presents an overview of the need, levels and historical development of integrated systems. Newly emerged technologies, especially object-oriented programming and the X Window System with its associated environment have given new flexibility and transparency to the designs. The client-server architecture is found out as an ideal model for integrated systems. The paper describes an implementation of these ideas, the INFORMS system that supports the information needs of district level forest management planning.

The PDF includes an abstract in Finnish.

  • Loh, ORCID ID:E-mail:
  • Saarenmaa, ORCID ID:E-mail:
article id 5184, category Article
Annikki Karjalainen, Lauri Hyväkkä, Sini Kärki-Folkersma. (1983). Metsätieteellisen kirjallisuuden haku atk-tiedostoista. Silva Fennica vol. 17 no. 2 article id 5184. https://doi.org/10.14214/sf.a15100
English title: Experiences of some bibliographic databases in forestry.

The usefulness of some international bibliographic databases for Finnish forest researchers was studied. In this study, 26 gratis online searches from one or more databases was made. The searches were carried out using mainly AGRICOLA, BIOSIS and CAB databases. The most used database was CAB, which includes Forestry Abstracts. The relevance of the references retrieved was evaluated by the users. Recall, precision, novelty and overlap of the references were measured. The users evaluated the results and costs of their search. Some previous comparable studies are reviewed.

The PDF includes a summary in English.

  • Karjalainen, ORCID ID:E-mail:
  • Hyväkkä, ORCID ID:E-mail:
  • Kärki-Folkersma, ORCID ID:E-mail:

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