Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | Springer Nature Link |
|---|---|
| Author | Kke, Thomas Wenderoth, Stephanie Schulz |
| Copyright Year | 2001 |
| Abstract | Der vorliegende Beitrag untersucht, von welchen Faktoren es abhängt, ob eine Buche an einer Schnittfläche einen Farbkern aufweist oder nicht und durch welche Faktoren der Kerndurchmesser beeinflusst wird. Die Farbkerneigenschaften werden als abhängige Variablen anhand der Daten von 195 gefällten Buchen analysiert.Die Streuung der abhängigen Variablen lässt sich zu einem großen Teil durch den BHD der Buche, die Höhe, in der der Farbkern analysiert wurde und den durchschnittlichen Durchmesserzuwachs erklären. Als waldbaulich wichtigstes Ergebnis zeigte die Analyse, dass Bäume mit hohem durchschnittlichen Durchmesserzuwachs bei sonst gleichen Eigenschaften weniger wahrscheinlich einen Farbkern bzw. einen Farbkern mit bestimmtem Mindestdurchmesser aufwiesen. Daraus lässt sich ableiten, dass waldbaukonzepte, die es ermöglichen, Buchenholz bestimmter Dimensionen in kürzerer Zeit zu produzieren, das Risiko der Qualitätsminderung durch Farbkern reduzieren. Der Standorterwies sich nur im Zuge der Analyse des Kerndurchmessers als wesentlicher Einflussfaktor, nicht jedoch bezüglich der Wahrscheinlichkeit, dass eine Buche einen Farbkern aufweist. Neben den genannten erklärenden Variablen beeinflusste die Anzahl der aktuellen bzw. ehemaligen Lufteintrittspforten (Totäste, Beulen, große Astnarben) den Kerndurchmesser und die Wahrscheinlichkeit auf einer Schnittfläche einen Farbkern mit bestimmtem Mindestdurchmesser zu finden. Der Faktor „Anzahl Lufteintrittspforten“ wirkte sich jedoch nur in geringem Maße auf den Kerndurchmesser und die Wahrscheinlichkeit, mit der eine Buche einen Kern mit bestimmtem Mindestdurchmesser aufweist, aus.This study analyses data collected from 195 felled beech trees. Probability of occurrence and heart-wood diameter were used as dependent variables.The dependent variables were significantly affected by the dbh of the stem, the height on the stem where colouration occurred, and mean diameter increment. The most important result of the analyses, from a silvicultural point of view, is that fast-growing trees were associated with a low probability of forming red-coloured heartwood and thus a low probability of having poor-quality wood. Therefore, a silvicultural treatment that allows the production of beech timber of a specific dimension within a short time is efficient in reducing the risk of devaluation by coloured heartwood. Site was found to significantly affect only heartwood diameter. The number of injuries in the bark (dead branches, knobs, big scars) through which oxygen enters the stem significantly affected the extent of the heartwood as well as the probability that a beech tree exhibits coloured heartwood of more than 33% of the stem cross-section. However, the latter factor only slightly affected the diameter of coloured heartwood. |
| Starting Page | 154 |
| Ending Page | 172 |
| Page Count | 19 |
| File Format | |
| ISSN | 00158003 |
| Journal | Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch |
| Volume Number | 120 |
| Issue Number | 1-6 |
| e-ISSN | 14390337 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2001-01-01 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | Fagus sylvatica silvicultural treatment red-coloured heartwood injuries in the bark probability of having poor-quality wood Forestry Plant Sciences Plant Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science Forestry |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|