Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Kristina Ahnlund Ulvcrona"'
Publikováno v:
Silva Fennica, Vol 47, Iss 3 (2013)
Early effects (stem volume, mean diameter at breast height weighted against basal area (Dgv) (Dgv), biomass and damage frequency) of different silvicultural regimes 18-19 years after direct seeding of lodgepole pine in northern Sweden were analysed.
Externí odkaz:
https://doaj.org/article/1d985d7a3a5948c4983549bc76085036
Autor:
Göran Hallsby, Hans Sjögren, Anders Karlsson, Thomas Ulvcrona, Björn Elfving, Kristina Ahnlund Ulvcrona, Urban Bergsten
Publikováno v:
Forestry. 88:441-453
The general belief that intense regeneration measures are financially viable and essential for high sustained yields of commercial forest products has been inadequately tested. This field experiment evaluates effects of three different regeneration i
Publikováno v:
Forest Ecology and Management. 340:40-45
Swedish energy policy and the introduction of targets concerning the proportion of renewable energy used within Europe have increased the demand for forest biomass that can be used for energy generation. This includes industrial forest residues, resi
Publikováno v:
Scandinavian Journal of Forest Research. 29:427-435
Data from seven Scots pine (Pinus sylvestris L.) stands in central Sweden that had undergone pre-commercial thinning (PCT) were used to investigate the biological effect of PCT on the diameter at breast height (DBH) growth of the remaining trees. Two
Publikováno v:
Scandinavian Journal of Forest Research. :1-13
The increasing demand for forest biomass for energy generation could be partially met by growing denser stands and use of fertilizer. Before this is done at large scale, more knowledge of the effects of stand density and fertilization on aboveground
Publikováno v:
Silva Fennica, Vol 51, Iss 3 (2017)
Silva Fennica
Silva Fennica
Boom corridor thinning (BCT) has been proposed as a cost-effective technique for biomass thinning (BT) in young dense stands. The objective of this study was to determine how various BCT operations affect stand structure following biomass thinning an
Publikováno v:
Forestry. 84:207-219
Summary As a result of escalating demands for wood and parts of trees for use as biofuels and energy generation, there is growing interest in increasing forest biomass production. The objective of this study, therefore, was to investigate whether the
Publikováno v:
Scandinavian Journal of Forest Research. 26:319-328
Individual tree mortality was analysed for 9924 Scots pine trees from 26 pre-commercial thinning (PCT) experiments established in Sweden (57°–66° N) between 1953 and 1972. Almost all of the stands examined were naturally regenerated and homogenou
Publikováno v:
Forestry. 80:323-335
Summary The effects of pre-commercial thinning on tree and branch characteristics were analysed at two experimental sites in northern Sweden, where pre-thinning of Scots pine stands to 600, 1000 and 1800 stems per hectares at heights of 1.5, 3, 5 and
Publikováno v:
Silva Fennica. 48
Biomass models for the biomass of above-ground tree components of Scots pine ( L.), Norway spruce ( [L.] Karst.) and birch ( Roth and Ehrh.) in young dense Scots pine dominated forest stands in northern Sweden were constructed. Destructive above-grou