Investigations on spatial heterogeneity of humus forms and natural regeneration of Larch (<i>Larix decidua Mill</i>.) and Swiss Stone Pine (<i>Pinus cembra L.</i>) in an alpine timberline ecotone (Upper Engadine, Central Alps, Switzerland)
The north-west facing study area in the Upper Engadine (Central Alps, Switzerland) encompasses the whole timberline ecotone between 2200 m and 2400 m a.s.l.. By dendroecological methods, clear differences concerning quantity and age structure of the natural regeneration of the main tree species Swis...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | deu |
| Published: |
Copernicus Publications
|
| Series: | Geographica Helvetica |
| Online Access: | http://www.geogr-helv.net/57/81/2002/gh-57-81-2002.pdf |
| _version_ | 1811240466290573312 |
|---|---|
| author | B. Hiller A. Müterthies F.-L. Holtmeier G. Broll |
| author_facet | B. Hiller A. Müterthies F.-L. Holtmeier G. Broll |
| author_sort | B. Hiller |
| collection | DOAJ |
| description | The north-west facing study area in the Upper Engadine (Central Alps, Switzerland) encompasses the
whole timberline ecotone between 2200 m and 2400 m
a.s.l.. By dendroecological methods, clear differences
concerning quantity and age structure of the natural
regeneration of the main tree species Swiss stone pine
(<i>Pinus cembra L.</i>) and larch (<i>Larix decidua Mill.</i>) at
different sites could be detected.The differing site conditions, closely linked to the microtopography, determine distribution and age structure of natural tree
regeneration, as well as humus forms. On exposed sites
characterised by Tenuic Humimors, an intensive natural regeneration of, in particular, Swiss stone pine
occurs. In depressions with a Rhizic Leptomoder, the
density of tree regeneration is low and a high tree mortality
could be observed. The results indicate that the
site conditions most important for the natural regeneration of trees in the timberline ecotone are reflected
in the site-specific humus form. |
| first_indexed | 2024-04-12T13:20:45Z |
| format | Article |
| id | doaj.art-9872e62973634b4ab931955eab14b52f |
| institution | Directory Open Access Journal |
| issn | 0016-7312 2194-8798 |
| language | deu |
| last_indexed | 2024-04-12T13:20:45Z |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Geographica Helvetica |
| spelling | doaj.art-9872e62973634b4ab931955eab14b52f2022-12-22T03:31:29ZdeuCopernicus PublicationsGeographica Helvetica0016-73122194-8798572819010.5194/gh-57-81-2002Investigations on spatial heterogeneity of humus forms and natural regeneration of Larch (<i>Larix decidua Mill</i>.) and Swiss Stone Pine (<i>Pinus cembra L.</i>) in an alpine timberline ecotone (Upper Engadine, Central Alps, Switzerland)B. Hiller0A. Müterthies1F.-L. Holtmeier2G. Broll3Institut für Didaktik der Geographie, Westfälische Wilhelms-Universität Münster, Robert-Koch-Strasse 26, 48149 Münster, GermanyInstitut für Landschaftsökologie, Westfälische Wilhelms-Universität Münster, Robert-Koch-Strasse 26, 48149 Münster, GermanyInstitut für Landschaftsökologie, Westfälische Wilhelms-Universität Münster, Robert-Koch-Strasse 26, 48149 Münster, GermanyAbteilung für Geoökologie, ISPA, Hochschule Vechta, Postfach 1553, 49364 Vechta, GermanyThe north-west facing study area in the Upper Engadine (Central Alps, Switzerland) encompasses the whole timberline ecotone between 2200 m and 2400 m a.s.l.. By dendroecological methods, clear differences concerning quantity and age structure of the natural regeneration of the main tree species Swiss stone pine (<i>Pinus cembra L.</i>) and larch (<i>Larix decidua Mill.</i>) at different sites could be detected.The differing site conditions, closely linked to the microtopography, determine distribution and age structure of natural tree regeneration, as well as humus forms. On exposed sites characterised by Tenuic Humimors, an intensive natural regeneration of, in particular, Swiss stone pine occurs. In depressions with a Rhizic Leptomoder, the density of tree regeneration is low and a high tree mortality could be observed. The results indicate that the site conditions most important for the natural regeneration of trees in the timberline ecotone are reflected in the site-specific humus form.http://www.geogr-helv.net/57/81/2002/gh-57-81-2002.pdf |
| spellingShingle | B. Hiller A. Müterthies F.-L. Holtmeier G. Broll Investigations on spatial heterogeneity of humus forms and natural regeneration of Larch (<i>Larix decidua Mill</i>.) and Swiss Stone Pine (<i>Pinus cembra L.</i>) in an alpine timberline ecotone (Upper Engadine, Central Alps, Switzerland) Geographica Helvetica |
| title | Investigations on spatial heterogeneity of humus forms and natural regeneration of Larch (<i>Larix decidua Mill</i>.) and Swiss Stone Pine (<i>Pinus cembra L.</i>) in an alpine timberline ecotone (Upper Engadine, Central Alps, Switzerland) |
| title_full | Investigations on spatial heterogeneity of humus forms and natural regeneration of Larch (<i>Larix decidua Mill</i>.) and Swiss Stone Pine (<i>Pinus cembra L.</i>) in an alpine timberline ecotone (Upper Engadine, Central Alps, Switzerland) |
| title_fullStr | Investigations on spatial heterogeneity of humus forms and natural regeneration of Larch (<i>Larix decidua Mill</i>.) and Swiss Stone Pine (<i>Pinus cembra L.</i>) in an alpine timberline ecotone (Upper Engadine, Central Alps, Switzerland) |
| title_full_unstemmed | Investigations on spatial heterogeneity of humus forms and natural regeneration of Larch (<i>Larix decidua Mill</i>.) and Swiss Stone Pine (<i>Pinus cembra L.</i>) in an alpine timberline ecotone (Upper Engadine, Central Alps, Switzerland) |
| title_short | Investigations on spatial heterogeneity of humus forms and natural regeneration of Larch (<i>Larix decidua Mill</i>.) and Swiss Stone Pine (<i>Pinus cembra L.</i>) in an alpine timberline ecotone (Upper Engadine, Central Alps, Switzerland) |
| title_sort | investigations on spatial heterogeneity of humus forms and natural regeneration of larch i larix decidua mill i and swiss stone pine i pinus cembra l i in an alpine timberline ecotone upper engadine central alps switzerland |
| url | http://www.geogr-helv.net/57/81/2002/gh-57-81-2002.pdf |
| work_keys_str_mv | AT bhiller investigationsonspatialheterogeneityofhumusformsandnaturalregenerationoflarchilarixdeciduamilliandswissstonepineipinuscembraliinanalpinetimberlineecotoneupperengadinecentralalpsswitzerland AT amuterthies investigationsonspatialheterogeneityofhumusformsandnaturalregenerationoflarchilarixdeciduamilliandswissstonepineipinuscembraliinanalpinetimberlineecotoneupperengadinecentralalpsswitzerland AT flholtmeier investigationsonspatialheterogeneityofhumusformsandnaturalregenerationoflarchilarixdeciduamilliandswissstonepineipinuscembraliinanalpinetimberlineecotoneupperengadinecentralalpsswitzerland AT gbroll investigationsonspatialheterogeneityofhumusformsandnaturalregenerationoflarchilarixdeciduamilliandswissstonepineipinuscembraliinanalpinetimberlineecotoneupperengadinecentralalpsswitzerland |