God – razlika između verzija
m Bot: popravljanje preusmjeravanja |
m robot kozmetičke promjene |
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| Red 11: | Red 11: | ||
== Eksterni linkovi == |
== Eksterni linkovi == |
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{{Commonscat|Growth rings}} |
{{Commonscat|Growth rings}} |
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*[http://web.utk.edu/~grissino/ Henri D. Grissino-Mayer's Ultimate Tree Ring Web Pages] |
* [http://web.utk.edu/~grissino/ Henri D. Grissino-Mayer's Ultimate Tree Ring Web Pages] |
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*[http://www.ltrr.arizona.edu The Laboratory of Tree-Ring Research] |
* [http://www.ltrr.arizona.edu The Laboratory of Tree-Ring Research] |
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*[http://www.arts.cornell.edu/dendro/ Wiener Laboratory for Aegean and Near Eastern Dendrochronology] at [[Cornell University]] |
* [http://www.arts.cornell.edu/dendro/ Wiener Laboratory for Aegean and Near Eastern Dendrochronology] at [[Cornell University]] |
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*[http://www.dr-beuting.de/index_en.php Dendrochronology on musical instruments and art objects] |
* [http://www.dr-beuting.de/index_en.php Dendrochronology on musical instruments and art objects] |
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*[http://web.utk.edu/~grissino/ltrs/ University of Tennessee Dendrochronology] |
* [http://web.utk.edu/~grissino/ltrs/ University of Tennessee Dendrochronology] |
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*[http://www.dendrochronology.com/ Oxford Dendrochronology Laboratory] |
* [http://www.dendrochronology.com/ Oxford Dendrochronology Laboratory] |
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*[http://www.geog.uvic.ca/dept/uvtrl/uvtrl.htm University of Victoria Tree Ring Laboratory] |
* [http://www.geog.uvic.ca/dept/uvtrl/uvtrl.htm University of Victoria Tree Ring Laboratory] |
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*[http://www01.wsl.ch/glossary/ WST Online Glossary of Dendrochronology] at [[ETH Zurich]] |
* [http://www01.wsl.ch/glossary/ WST Online Glossary of Dendrochronology] at [[ETH Zurich]] |
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*[http://www.mta.ca/madlab/ Mount Allison University Dendrochronology Laboratory] |
* [http://www.mta.ca/madlab/ Mount Allison University Dendrochronology Laboratory] |
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*[http://www.researchchannel.org/prog/displayevent.aspx?rID=4890&fID=345 Linda Brubaker, UW professor of dendrochronology,] shows how dendrochronological research helps us reconstruct prior climate conditions and advance our knowledge of the effects of global climate change |
* [http://www.researchchannel.org/prog/displayevent.aspx?rID=4890&fID=345 Linda Brubaker, UW professor of dendrochronology,] shows how dendrochronological research helps us reconstruct prior climate conditions and advance our knowledge of the effects of global climate change |
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*[http://www.tree-ringdating.co.uk/ Nottingham Tree-Ring Dating Laboratory] |
* [http://www.tree-ringdating.co.uk/ Nottingham Tree-Ring Dating Laboratory] |
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[[Kategorija:Datiranje]] |
[[Kategorija:Datiranje]] |
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Verzija na datum 23 juni 2014 u 06:47
God ili godišnji prsten je naziv za prirast drva u debljinu kod višegodišnjih golosjemenjača i drvenastih dvosupnica. Godovi se na poprečnom presjeku drva vide kao koncentrični prstenovi.
Godovi nastaju tako da se djelovanjem embrionalnih stanica na vršku razvija novo tkivo, iz koga procesom diferencijacije nastaju osnovno tkivo, žile i kožno tkivo mladog drveta. Žile su kod golosjemenjača i dvosupnica poredane u krugu, a između njih u radijalnom smjeru teku parenhimatske zrake srčike.
U toku vegetacijske sezone nije rad tvornog tkiva jednako intenzivan. U rano proljeće nastaju veliki elementi (stanice). Tokom ljeta počinju se razvijati sve manji i manji elementi, da bi krajem ljeta i početkom jeseni diobe nestale. Zbog toga se na poprečnom presjeku drva vidi jasna granica između drva starijeg i drva mlađeg goda.
Brojanje godova je metoda kojom se određuje starost drva. Godovi također služe za datiranje određenih godina, a ta se metoda, koju je razvio A. E. Douglass, naziva dendrokronologija.
Eksterni linkovi
- Henri D. Grissino-Mayer's Ultimate Tree Ring Web Pages
- The Laboratory of Tree-Ring Research
- Wiener Laboratory for Aegean and Near Eastern Dendrochronology at Cornell University
- Dendrochronology on musical instruments and art objects
- University of Tennessee Dendrochronology
- Oxford Dendrochronology Laboratory
- University of Victoria Tree Ring Laboratory
- WST Online Glossary of Dendrochronology at ETH Zurich
- Mount Allison University Dendrochronology Laboratory
- Linda Brubaker, UW professor of dendrochronology, shows how dendrochronological research helps us reconstruct prior climate conditions and advance our knowledge of the effects of global climate change
- Nottingham Tree-Ring Dating Laboratory