Zobrazeno 1 - 10
of 243
pro vyhledávání: '"Korhonen, Kari"'
Publikováno v:
Silva Fennica, Vol 50, Iss 2 (2016)
The occurrence of moose damage was studied using data from three National Forest Inventories (NFIs) accomplished between 1986 and 2008 in Finland. The combined data included a total of 97â390 young stands. The proportion of moose damage increased fr
Externí odkaz:
https://doaj.org/article/e51b2a53756542db8adc422ef868ea42
Autor:
Tuominen, Sakari, Pitkänen, Juho, Balazs, Andras, Korhonen, Kari, Hyvönen, Pekka, Muinonen, Eero
Publikováno v:
Silva Fennica, Vol 48, Iss 2 (2014)
In Finland, there are currently two, parallel sample-plot-based forest inventory systems, which differ in their methodologies, sampling designs, and objectives. One is the National Forest Inventory (NFI), aimed at unbiased inventory results at nation
Externí odkaz:
https://doaj.org/article/57b8dee5dbc349c7888e5e60ae339b9f
Autor:
Gschwantner, Thomas, Riedel, Thomas, Henning, Lea, Adame, Patricia, Adolt, Radim, Aguirre, Ana, Alberdi, Iciar, Avitabile, Valerio, Cañellas, Isabel, Di Cosmo, Lucio, Fischer, Christoph, Freudenschuß, Alexandra, Gasparini, Patrizia, Henttonen, Helena M., Korhonen, Kari T., Kučera, Miloš, Marin, Gheorghe, Máslo, Jan, Mionskowski, Marcin, Morneau, François, Mubareka, Sarah, Neagu, Stefan, Nilsson, Mats, Pesty, Benoit, Schadauer, Klemens, Sroga, Radosław, Talarczyk, Andrzej, Westerlund, Bertil
Publikováno v:
In Forest Ecology and Management 15 June 2024 562
Publikováno v:
Silva Fennica, Vol 41, Iss 4 (2007)
Accurate field measurement of the forest canopy cover is too laborious to be used in extensive forest inventories. A possible alternative to the separate canopy cover measurements is to utilize the correlations between the percent canopy cover and ea
Externí odkaz:
https://doaj.org/article/6ca561bf5d4c42bda1cc04f5d1cfbd20
Publikováno v:
Silva Fennica, Vol 40, Iss 4 (2006)
Estimation of forest canopy cover has recently been included in many forest inventory programmes. In this study, after discussing how canopy cover is defined, different ground-based canopy cover estimation techniques are compared to determine which w
Externí odkaz:
https://doaj.org/article/0de3ae5e32914417bccff7cf75c4ef27
Publikováno v:
Silva Fennica, Vol 35, Iss 3 (2001)
A multi-source forest inventory method is applied to the estimation of forest resources in the area of the Hebei Forest Bureau in Heilongjiang province in North-East China. A stratified systematic cluster sampling design was utilised in field measure
Externí odkaz:
https://doaj.org/article/fd2b85f8f0c54fe88d02c735d3c4d265
Autor:
Nuutinen, Tuula, Hirvelä, Hannu, Hynynen, Jari, Härkönen, Kari, Hökkä, Hannu, Korhonen, Kari, Salminen, Olli
Publikováno v:
Silva Fennica, Vol 34, Iss 2 (2000)
Using the Finnish MELA model, a set of scenarios were produced and used to map the possibilities and risks surrounding the utilisation of peatlands in wood production in Finland. One of the scenarios was an estimate of allowable-cut calculated by max
Externí odkaz:
https://doaj.org/article/17226f21d8164ab1a29ddb91e7245afc
Autor:
Kangas, Annika, Korhonen, Kari
Publikováno v:
Silva Fennica, Vol 29, Iss 2 (1995)
Semiparametric models, ordinary regression models and mixed models were compared for modelling stem volume in National Forest Inventory data. MSE was lowest for the mixed model. Examination of spatial distribution of residuals showed that spatial cor
Externí odkaz:
https://doaj.org/article/e5fdfa0cabd94318a3355908f326bda3
Autor:
Korhonen, Kari
Publikováno v:
Silva Fennica, Vol 27, Iss 4 (1993)
Regression models for estimating stem volume of Scots pine ( L.) were constructed using sample tree data measured in the 7th and 8th National Forest Inventory of Finland. Stem volume were regressed on diameter, basal area of growing stock, and geogra
Externí odkaz:
https://doaj.org/article/6a1285fee9fe428bb4adbd0da705a9c2
Autor:
Korhonen, Kari
Publikováno v:
Silva Fennica, Vol 26, Iss 4 (1992)
Models for estimating the upper diameter of trees were constructed using sample tree data measured in the 7th National Forest Inventory in Finland. Calibration of the models was tested with data from the 8th National Forest Inventory. The results sho
Externí odkaz:
https://doaj.org/article/0903f4edaf5347f9b7b529c70bdedf5e