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Sign: The Hebrew University of Jerusalem - Discovery Tree Walk - Giant Sequoia


Address:
Givat Ram, Jerusalem, Israel
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On the sign:
31
סקוויון ענקי
Sequoiadendron giganteum


תפוצה טבעית: הרי הסיירה נבאדה, קליפורניה, ארה"ב

העצים הענקיים ביותר על פני כדור הארץ, גזעם הוא העבה ביותר: עד 11 מטר קוטרו! האזורים השחורים הקטנים על פני השטח של גזע זה מעידים על בעירה ישנה בתוכו; השטח החלול למטה מעיד על נזק משריפות מאוחרות יותר. העץ נפל בסערה ב -2001 בקליפורניה ארה"ב.

[הפאה השנייה של הקוביה]
[The second face of the cube]
31
Giant Sequoia
Sequoiadendron giganteum


Natural range: Sierra Nevada Mountains, California, USA

The most massive trees on earth, their trunks can be up to 11 meters across! Small blackened areas on this flat surface show centuries-old fire damage. Recent fires hollowed out the large bottom space. Felled by a storm in California in 2001.

[הפאה השלישית של הקוביה]
[The third face of the cube]
[שאלה]
התוכל לאתר את החלק העתיק ביותר בגזע? האם תוכל למצוא את טבעות הצמיחה השנתית?
רמז: רוחב כל טבעת הוא 1-2 מ"מ. נסה להעריך כמה טבעות ישנן מהחלק העתיק אל הטבעת החיצונית.

[a question]
Can you find: The oldest part of this trunk? The annual growth rings, each about 1-2 millimeters wide? About how many rings, from the oldest to the most recent (outer- most) ring?

[הפאה הרביעית של הקוביה]
[The fourth face of the cube]
[התשובה לשאלה]
העיגול הבולט גבוה בצד ימין (כאשר דשא הקמפוס מאחוריך) הוא החלק העתיק ביותר של הגזע. מכאן הגזע מתפתח לרוחב, אך לא בצורה סימטרית. מהעיגול הבולט ושמאלה כלפי מטה ניתן לספור כ-2,000 טבעות שנתיות; המספר ממקם את ראשית צמיחתו לזמן שלטון הרומאים בארץ.

[The Answer to the question]
This trunk’s oldest part is a prominent circle, high on the right (as viewed with the main campus lawn behind you). From there, the trunk grew in width, but asymmetrically. Counting from the prominent circle downward to the left, there are roughly 2,000 annual rings. Thus, this tree was born about the time the Romans ruled here.
Photography:
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Comments:
Tree No. 31 in the Mac and Tibby Podel Discovery Tree Walk, located on the Edmond J. Safra Campus of the Hebrew University of Givat Ram.

Each tree is accompanied by a cube with details on the tree. On the top of which is the text:
Mac and Tibby Podel Discovery Tree Walk Click for a larger image

In the next picture taken from one of the trees on the route, you can see the way the sign is placed (a cube standing on a metal pillar) and the tree to which it points Click for a larger image

The tree to which the cube points was photographed that day Click for a larger image

The top of the cube indicates the origin of the tree:
Brought from California in honor of the Nelson-Levy family of Jerusalem, who love nature and strive to protect it
Click for a larger image

The rest of the cube faces:
The second face Click for a larger image
The third face Click for a larger image
The fourth face Click for a larger image




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