natural regeneration of broadleaved tree species in Southern Sweden: effects of silvicultural treatments and seed dispersal from surrounding stands
The objective of the present thesis was to examine the effects of silvicultural treatments and seed dispersal from surrounding stands on the establishment of natural regeneration of broadleaved tree species in southern Sweden. Most of the broadleaved tree species that occur naturally in forests in s...
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Alnarp
Swedish Univ. of Agricultural Sciences
2001
|
| Schriftenreihe: | Acta Universitatis Agriculturae Sueciae / Silvestria
196 |
| Schlagworte: | |
| Zusammenfassung: | The objective of the present thesis was to examine the effects of silvicultural treatments and seed dispersal from surrounding stands on the establishment of natural regeneration of broadleaved tree species in southern Sweden. Most of the broadleaved tree species that occur naturally in forests in southern Sweden were studied but birch (Betula pendula Ehrh./B. pubescens Roth) was the most common species and present in equal numbers in all studies. The wind dispersal of seeds of seven species was studied and great variations were found. This could mainly be explained by differences in seed morphology. The effect of soil scarification was examined in all five studies and was generally found to be positive for the establishment of the studied broadleaved species. However, in some cases the scarification was not positive for the establishment. The reason for this was hypothesised to be that the seed supply was limited, or an effect of large and/or animal-dispersed seeds. The effect of shelterwood was examined in three studies and was found to be positive for animal-dispersed species but negative for shade-intolerant species, although a sparse shelterwood can be used to regenerate birch. Slash removal was included in one study and found to be positive for the establishment of birch. This thesis showed that regeneration treatments can be used to increase the establishment of naturally regenerated broadleaved tree seedlings, but the stand structure and species composition must be regulated with pre-commercial thinning. However, the effect of variations in seed production and seed dispersal must be closely examined from a time and a space perspective prior to any forecasts regarding the effects of regeneration treatments. |
| Beschreibung: | Zugl.: Alnarp, Sveriges Lantbruksuniv., Diss., 2000 |
| Beschreibung: | Getr. Zählung Ill., graph. Darst. |
| ISBN: | 9157660808 |
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| 520 | 3 | |a The objective of the present thesis was to examine the effects of silvicultural treatments and seed dispersal from surrounding stands on the establishment of natural regeneration of broadleaved tree species in southern Sweden. Most of the broadleaved tree species that occur naturally in forests in southern Sweden were studied but birch (Betula pendula Ehrh./B. pubescens Roth) was the most common species and present in equal numbers in all studies. The wind dispersal of seeds of seven species was studied and great variations were found. This could mainly be explained by differences in seed morphology. The effect of soil scarification was examined in all five studies and was generally found to be positive for the establishment of the studied broadleaved species. However, in some cases the scarification was not positive for the establishment. The reason for this was hypothesised to be that the seed supply was limited, or an effect of large and/or animal-dispersed seeds. The effect of shelterwood was examined in three studies and was found to be positive for animal-dispersed species but negative for shade-intolerant species, although a sparse shelterwood can be used to regenerate birch. Slash removal was included in one study and found to be positive for the establishment of birch. This thesis showed that regeneration treatments can be used to increase the establishment of naturally regenerated broadleaved tree seedlings, but the stand structure and species composition must be regulated with pre-commercial thinning. However, the effect of variations in seed production and seed dispersal must be closely examined from a time and a space perspective prior to any forecasts regarding the effects of regeneration treatments. | |
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| indexdate | 2024-07-09T20:00:06Z |
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| isbn | 9157660808 |
| language | English |
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| physical | Getr. Zählung Ill., graph. Darst. |
| publishDate | 2001 |
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| spelling | Karlsson, Matts Verfasser aut natural regeneration of broadleaved tree species in Southern Sweden effects of silvicultural treatments and seed dispersal from surrounding stands Matts Karlsson Alnarp Swedish Univ. of Agricultural Sciences 2001 Getr. Zählung Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Acta Universitatis Agriculturae Sueciae / Silvestria 196 Zugl.: Alnarp, Sveriges Lantbruksuniv., Diss., 2000 The objective of the present thesis was to examine the effects of silvicultural treatments and seed dispersal from surrounding stands on the establishment of natural regeneration of broadleaved tree species in southern Sweden. Most of the broadleaved tree species that occur naturally in forests in southern Sweden were studied but birch (Betula pendula Ehrh./B. pubescens Roth) was the most common species and present in equal numbers in all studies. The wind dispersal of seeds of seven species was studied and great variations were found. This could mainly be explained by differences in seed morphology. The effect of soil scarification was examined in all five studies and was generally found to be positive for the establishment of the studied broadleaved species. However, in some cases the scarification was not positive for the establishment. The reason for this was hypothesised to be that the seed supply was limited, or an effect of large and/or animal-dispersed seeds. The effect of shelterwood was examined in three studies and was found to be positive for animal-dispersed species but negative for shade-intolerant species, although a sparse shelterwood can be used to regenerate birch. Slash removal was included in one study and found to be positive for the establishment of birch. This thesis showed that regeneration treatments can be used to increase the establishment of naturally regenerated broadleaved tree seedlings, but the stand structure and species composition must be regulated with pre-commercial thinning. However, the effect of variations in seed production and seed dispersal must be closely examined from a time and a space perspective prior to any forecasts regarding the effects of regeneration treatments. Downy birch Sweden Reproduction European white birch Sweden Reproduction Forest regeneration Sweden Silvicultural systems Sweden Schweden (DE-588)4113937-9 Hochschulschrift gnd-content Silvestria Acta Universitatis Agriculturae Sueciae 196 (DE-604)BV011169885 196 |
| spellingShingle | Karlsson, Matts natural regeneration of broadleaved tree species in Southern Sweden effects of silvicultural treatments and seed dispersal from surrounding stands Downy birch Sweden Reproduction European white birch Sweden Reproduction Forest regeneration Sweden Silvicultural systems Sweden |
| subject_GND | (DE-588)4113937-9 |
| title | natural regeneration of broadleaved tree species in Southern Sweden effects of silvicultural treatments and seed dispersal from surrounding stands |
| title_auth | natural regeneration of broadleaved tree species in Southern Sweden effects of silvicultural treatments and seed dispersal from surrounding stands |
| title_exact_search | natural regeneration of broadleaved tree species in Southern Sweden effects of silvicultural treatments and seed dispersal from surrounding stands |
| title_full | natural regeneration of broadleaved tree species in Southern Sweden effects of silvicultural treatments and seed dispersal from surrounding stands Matts Karlsson |
| title_fullStr | natural regeneration of broadleaved tree species in Southern Sweden effects of silvicultural treatments and seed dispersal from surrounding stands Matts Karlsson |
| title_full_unstemmed | natural regeneration of broadleaved tree species in Southern Sweden effects of silvicultural treatments and seed dispersal from surrounding stands Matts Karlsson |
| title_short | natural regeneration of broadleaved tree species in Southern Sweden |
| title_sort | natural regeneration of broadleaved tree species in southern sweden effects of silvicultural treatments and seed dispersal from surrounding stands |
| title_sub | effects of silvicultural treatments and seed dispersal from surrounding stands |
| topic | Downy birch Sweden Reproduction European white birch Sweden Reproduction Forest regeneration Sweden Silvicultural systems Sweden |
| topic_facet | Downy birch Sweden Reproduction European white birch Sweden Reproduction Forest regeneration Sweden Silvicultural systems Sweden Schweden Hochschulschrift |
| volume_link | (DE-604)BV011169885 |
| work_keys_str_mv | AT karlssonmatts naturalregenerationofbroadleavedtreespeciesinsouthernswedeneffectsofsilviculturaltreatmentsandseeddispersalfromsurroundingstands |