Zobrazeno 1 - 10
of 344
pro vyhledávání: '"Timo Pukkala"'
Publikováno v:
Forests, Vol 15, Iss 6, p 935 (2024)
Korean pine is one of the most important tree species in northeastern China, where Korean pine plantations produce timber and edible seeds. Often, seeds create more income than timber. Predicting the timber and cone yields of alternative management s
Externí odkaz:
https://doaj.org/article/a750560b9e0b4e34a52cffa96de6f4d5
Autor:
Mika Nieminen, Timo Pukkala, Leena Stenberg, Sakari Sarkkola, Aleksi Vihonen, Annukka Valkeapää
Publikováno v:
Metsätieteen aikakauskirja, Vol 2023 (2023)
Tutkimuksessa selvitettiin prosessimallinnukseen ja kokeellisiin tutkimuksiin perustuen jatkuvan kasvatuksen ja tasaikäismetsätalouden vaikutusta metsäisiltä valuma-alueilta tapahtuvaan typpi- ja fosforikuormitukseen. Laskennan perustana oli, ett
Externí odkaz:
https://doaj.org/article/38bf5b1a32b54578a030de8516262dec
Publikováno v:
Silva Fennica, Vol 56, Iss 3 (2022)
Norway’s most common tree species, Picea abies (L.) Karst. (Norway spruce), is often infected with Heterobasidion parviporum Niemelä & Korhonen and Heterobasidion annosum (Fr.) Bref.. Because Pinus sylvestris L. (Scots pine) is less susceptible to
Externí odkaz:
https://doaj.org/article/c1379b077b7440318aa2f64d08583cb0
Autor:
Timo Pukkala
Publikováno v:
Forest Ecosystems, Vol 7, Iss 1, Pp 1-14 (2020)
Abstract Background Forest inventories are increasingly based on airborne laser scanning (ALS). In Finland, the results of these inventories are calculated for small grid cells, 16 m by 16 m in size. Use of grid data in forest planning results in the
Externí odkaz:
https://doaj.org/article/3e9e703269664f2d8955dba72d285850
Publikováno v:
Forest Ecosystems, Vol 7, Iss 1, Pp 1-13 (2020)
Abstract Background Modern remote sensing methods enable the prediction of tree-level forest resource data. However, the benefits of using tree-level data in forest or harvest planning is not clear given a relative paucity of research. In particular,
Externí odkaz:
https://doaj.org/article/f8ef5422143448aa8b8b286ac9cd96c1
Publikováno v:
Remote Sensing, Vol 14, Iss 24, p 6192 (2022)
Increased use of laser scanning in forest inventories is leading to the adoption and development of automated stand delineation methods. The most common categories of these methods are region merging and region growing. However, recent literature pro
Externí odkaz:
https://doaj.org/article/819baf2e5e404b34970e513ec72575a2
Publikováno v:
Remote Sensing, Vol 14, Iss 5, p 1125 (2022)
Individual tree detection is an increasing trend in LiDAR-based forest inventories. The locations, heights, and crown areas of the detected trees can be estimated rather directly from the LiDAR data by using the LiDAR-based canopy height model and se
Externí odkaz:
https://doaj.org/article/dcba1f78df254afcbfee775bf9cc3132
Publikováno v:
Land, Vol 11, Iss 2, p 220 (2022)
Population growth and human activities have resulted in drastic changes in land use in many areas of the world, including the Hyrcania region in northern Iran. Land-use changes affect the hydrological processes of water basins. This study evaluated t
Externí odkaz:
https://doaj.org/article/485a371f22d84727bdf8710e3ef52295
Publikováno v:
Silva Fennica, Vol 53, Iss 4 (2019)
Korean pine (Pinus koraiensis Siebold & Zucc.) is economically the most important tree species in northeast China. Korean pine plantations are established and managed for the production of timber and seeds. Despite the importance of the species, few
Externí odkaz:
https://doaj.org/article/4dd5ab0847984b9193b286fcaac039ee
Autor:
Timo Pukkala
Publikováno v:
Forest Ecosystems, Vol 5, Iss 1, Pp 1-11 (2018)
Abstract Background Forestry offers possibilities to sequestrate carbon in living biomass, deadwood and forest soil, as well as in products prepared of wood. In addition, the use of wood may reduce carbon emissions from fossil fuels. However, harvest
Externí odkaz:
https://doaj.org/article/b68dfa6343a54165941142a7c3053fe7