By Erkki Tomppo, Juha Heikkinen, Helena M. Henttonen, Antti Ihalainen, Matti Katila, Helena Mäkelä, Tarja Tuomainen, Nina Vainikainen
Reliable info on woodland assets and the prestige of forests on the nationwide point is needed for varied reasons, resembling making strategic judgements, formulating laws and proposals for wooded area administration, geared toward making sure the supply of enough provide of trees for the woodland industries in addition to of their strategic making plans of investments. it's also crucial in making plans wooded area safety and for protecting biodiversity. international agreements, similar to the Kyoto Protocol, more and more depend upon nationwide wooded area statistics.
National woodland Inventories in Finland have developed steadily over a interval of 1 hundred years, first with an ordeal stock within the 1910s, and because the Nineteen Twenties, with operative inventories. The sampling layout and estimation tools were consistently revised to correspond with stock ideas and the on hand infrastructure. The content material, in addition to the amassed facts and variables hired, are continuously tailored to the clients' wishes. Co-operation with the inventories of alternative international locations, rather with these of the Nordic international locations, has supported those developments.
This ebook demonstrates intimately all levels of the 9th nationwide woodland stock of Finland (1996–2003): the making plans of the sampling layout, measurements, estimation tools and effects. The stock wisdom collected in the course of nearly 100 years is consolidated within the e-book. the aim of the various examples of effects is to illustrate the variety of the estimates and content material of a countrywide wooded area stock. The authors wish that the e-book can assist in designing and engaging in any huge region woodland stock.
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Additional resources for Designing and Conducting a Forest Inventory - case: 9th National Forest Inventory of Finland
Sample text
6 Mature stand: a stand with a growing stock either old and/or large enough for the goal of the management of the stand to be regeneration cutting and establishment of a new stand but regeneration cutting had not yet been started. The maturity for regeneration was primarily determined with the help of the age of growing stock, and to some extent with the help of mean diameter. The stocked parts of strip cutting areas were classified into mature stands. 7 Shelter tree stand: a natural regeneration area, usually with 150–300 stems per hectare.
4), but the general idea was to choose the design with the smallest simulated error among those satisfying the budget constraints. The time consumption of the different phases, such as walking to a cluster, moving from one plot to the next, measuring a tree, conducting the stand level assessment, and mapping the trees on the permanent plots, were partly taken from a study by Päivinen and Yli-Kojola (1983) and partly collected from field crews and earlier experiences (Henttonen 1991; Tomppo et al.
8 Areas where the forest regime did not restrict wood production. , from documents concerning the decisions to establish nature reserves, and maps of the land-use plans as well as the nature conservation databases of the Finnish Environment Institute and Metsähallitus. New restrictions identified during the field work were also recorded. 2 was very diverse and it diverged from the other categories since the detection of these areas was based only on field observations by the field crew leader and not on documentation, as in the other cases.