Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Siipilehto, Jouni"'
Publikováno v:
Silva Fennica, Vol 55, Iss 2 (2021)
Ageing and competition reduce treesâ ability to capture resources, which predisposes them to death. In this study, the effect of senescence on the survival probability of Norway spruce ( (L.) Karst.) was analysed by fitting alternative survival prob
Externí odkaz:
https://doaj.org/article/5bb09a1860374389badc3b7520aa46f8
Autor:
Siipilehto, Jouni, Allen, Micky, Nilsson, Urban, Brunner, Andreas, Huuskonen, Saija, Haikarainen, Soili, Subramanian, Narayanan, Antón-Fernández, Clara, Holmström, Emma, Andreassen, Kjell, Hynynen, Jari
Publikováno v:
Silva Fennica, Vol 54, Iss 5 (2020)
New mortality models were developed for the purpose of improving long-term growth and yield simulations in Finland, Norway, and Sweden and were based on permanent national forest inventory plots from Sweden and Norway. Mortality was modelled in two s
Externí odkaz:
https://doaj.org/article/3dc808f9784045438113d3eb0e04d153
Publikováno v:
Silva Fennica, Vol 50, Iss 3 (2016)
Accurate timber assortment information is required before cuttings to optimize wood allocation and logging activities. Timber assortments can be derived from diameter-height distribution that is most often predicted from the stand characteristics pro
Externí odkaz:
https://doaj.org/article/25cdcb9d3c7e4ccea56ad9996a96c434
Autor:
Siipilehto, Jouni1 (AUTHOR) jouni.siipilehto@luke.fi, Henttonen, Helena M.1 (AUTHOR), Katila, Matti1 (AUTHOR) matti.katila@luke.fi, Mäkinen, Harri1 (AUTHOR)
Publikováno v:
Remote Sensing. Jul2024, Vol. 16 Issue 14, p2513. 20p.
Autor:
Siipilehto, Jouni
Publikováno v:
Silva Fennica, Vol 45, Iss 4 (2011)
This study produced a family of models for eight standard stand characteristics, frequency and basal area-based diameter distributions, and a height curve for stands in Finland dominated by Scots pine (Pinus sylvestris L.). The data consisted of 752
Externí odkaz:
https://doaj.org/article/0488a00a131f4501accc5907169e7db3
Autor:
Lee, Daesung, Siipilehto, Jouni, Miina, Jari, Niemistö, Pentti, Haapanen, Matti, Hynynen, Jari, Huuskonen, Saija
Publikováno v:
In Forest Ecology and Management 1 July 2024 563
Publikováno v:
Silva Fennica, Vol 41, Iss 2 (2007)
We compared different statistical methods for fitting linear regression models to a longitudinal data of breast height diameter (dbh) distributions of Scots pine dominated stands on drained peatlands. The parameter prediction methods for two paramete
Externí odkaz:
https://doaj.org/article/b7bf2d61fee84ebe9de8b7d2c6a36bf9
Autor:
Siipilehto, Jouni
Publikováno v:
Silva Fennica, Vol 40, Iss 3 (2006)
The aim was to produce models for a large number of stand characteristics of Norway spruce dominated stands. A total of 227 national forest inventory based permanent stand plots, dominated by Norway spruce (Picea abies), were used in modelling eight
Externí odkaz:
https://doaj.org/article/534c42ee41114788ad30d0b6ac3ac4d7
Autor:
Siipilehto, Jouni
Publikováno v:
Silva Fennica, Vol 40, Iss 3 (2006)
The paper focused on the height structure of Scots pine saplings affected by (1) retained solitary pine trees or (2) a pine-dominated edge stand. The study material in (1) and (2) consisted of ten separate regeneration areas in southern Finland. In (
Externí odkaz:
https://doaj.org/article/e36df0033eaa43a0a0d15112415b48e4
Autor:
Siipilehto, Jouni, Siitonen, Juha
Publikováno v:
Silva Fennica, Vol 38, Iss 4 (2004)
The degree of naturalness was assessed in 37 mature (stand age 80 198 yrs) Norway spruce dominated stands located in southern Finland by measuring the number (0 610 haâ1) and basal area (0 33 m2 haâ1) of cut stumps. The Johnsonâs SB distribution w
Externí odkaz:
https://doaj.org/article/00e640ae05c04a93be1a06436ac1b203