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Articles by Pekka Ripatti

Category: Research note

article id 631, category Research note
Pekka Ripatti. (2000). Use of log-linear models in forecasting structural changes in Finnish non-industrial private forest ownership. Silva Fennica vol. 34 no. 3 article id 631. https://doi.org/10.14214/sf.631
This paper presents how log-linear models can be used for modelling and forecasting structural changes of Finnish non-industrial private forest ownership. Two cross-sectional sets of data, which were collected in conjunction with two separate surveys by means of mail questionnaires in 1975 and 1990, were employed. A total of six non-industrial private forest holding and ownership attributes are forecast focusing on the earlier pace of structural change. The results show that the pace of change in the forecast attributes appears to be less than it would be when derived from extrapolation of the earlier trends. The results of the study can be applied to forest policy and forestry extension planning, by providing a more realistic outlook of the future structure of non-industrial private forest ownership.
  • Ripatti, Finnish Forest Research Institute, Helsinki Research Centre, Unioninkatu 40 A, FIN-00170 Helsinki, Finland ORCID ID:E-mail: pekka.ripatti@metla.fi (email)

Category: Article

article id 5485, category Article
Pekka Ripatti. (1992). Yksityistilojen metsäalan muutokset Kaakkois-Suomessa 1986-1991. Silva Fennica vol. 26 no. 3 article id 5485. https://doi.org/10.14214/sf.a15646
English title: Forest area changes of non-industrial private forest holdings in southeast Finland, 1986–1991.

The aim of the study was to describe the total change of forest area in non-industrial private forest holdings in southeast Finland, 1986–1991. The average gross decrease of forest area was 1.7 hectares, whereas the average gross increase was 1.2 hectares. Consequently, the average size of holdings decreased from 32.5 to 32.0 hectares. The most important factors affecting the changes of forest area were the inheritance system, resulting in a decrease of 0.7 ha, and reclassification of forestry land, producing an increase of 0.4 ha per holding. The increase of small, under 10 ha holdings accounted for much of the structural change.

The PDF includes an abstract in English.

  • Ripatti, ORCID ID:E-mail:
article id 7514, category Article
Pekka Ripatti. (1996). Factors affecting partitioning of private forest holdings in Finland. Acta Forestalia Fennica no. 252 article id 7514. https://doi.org/10.14214/aff.7514

Questions of the small size of non-industrial private forest (NIPF) holdings in Finland are considered and factors affecting their partitioning are analysed. This work arises out of Finnish forest policy statements in which the small average size of holdings has been seen to have negative influence on the economics of forestry. A literature survey indicates that the size of holdings is an important factor determining the costs of logging and silvicultural operations, while its influence on the timber supply is slight.

The empirical data are based on a sample of 314 holdings collected by interviewing forest owners in 1980–86. In 1990–91 the same holdings were resurveyed by means of a postal inquiry and partly by interviewing the forest owners. The principal objective was to collect data to assist in quantifying ownership factors that influence partitioning among different kinds of NIPF holdings. Thus, the mechanism of partitioning was described and a maximum likelihood logistic regression model was constructed using seven independent holding and ownership variables.

One out of four holdings had undergone partitioning in conjunction with a change in ownership, one fifth among family owned holdings and nearly a half among jointly owned holdings. The results of the logistic regression model indicate, for instance, that the odds on partitioning is about three times greater for jointly owned holdings than for family owned ones. Also, the probabilities of partitioning were estimated and the impact of independent dichotomous variables on the probability of partitioning ranged between 0.02 and 0.01. The low value of Hosmer-Lemeshow test statistics indicates a good fit of the model, and the rate of correct classification was estimated to be 88% with a cut-off point of 0.5.

The average size of holdings undergoing ownership changes decreased from 29.9 ha to 28.7 ha over the approximate interval 1983–90. In addition, the transition probability matrix showed that the trends towards smaller size categories mostly concerned the small size categories. The results can be used in considering the effects of the small size holdings for forestry and if the purpose is to influence partitioning through forest or rural policy.

  • Ripatti, ORCID ID:E-mail:

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