יער יתיר: בחינה של השפעת צפיפות העומד וניהול הרעייה על תפקודו של יער מחטני על סף המדבר. (Hebrew)
In: Yaar (Forrest): Magazine for Managing Forests & Open Areas, 2023-06-01, Heft 24, S. 51-58
academicJournal
Zugriff:
Yatir Forest is a planted forest comprising mainly Aleppo pine (Pinus halepensis), bordering on the Negev desert in Israel. The research station in Yatir Forest became part of the Long-Term Ecological Research (LTER) network in 2009, with an experiment focusing on land use management strategies. The experimental forest plots were thinned to stand densities of 10, 20, and 30 trees per hectare, with several unthinned control plots, similar to the LTER station in the Kedoshim Forest. In addition to assessing the effects of grazing on the forest ecological functions, half of each plot was fenced off to prevent access of local herds. Tree monitoring included physiological measurements (needle length, stem diameter, root growth, seedling germination and survival) and ecological parameters (understory growth, soil moisture, etc). During the 13 years of monitoring, trees in the thinned plots (mostly in 10 trees/hectare plots) consistently exhibited enhanced growth. Contrary to our initial hypothesis that thinning would enhance tree growth due to improved water availability as a result of reduced competition from neighboring trees, light availability was found to be the most limiting factor. Our results indicate that stand density reduction enhances water use efficiency in the remaining trees and overall performance, and should be considered as a prospective forest management policy. In addition, our results indicated that natural tree regeneration is not likely in the Yatir forest, even when thinning and fencing are applied, probably due to the harsh climatic conditions of the area. The data collected from the Yatir LTER station shed light on the ecological processes taking place in this uniquely arid forest and contribute important insights for the KKL-JNF long-term forest management plans. The Yatir Forest is an important model for understanding how forests behave under climate change, and hence, the results of this experiment have global significance for long-term forest management strategies. [ABSTRACT FROM AUTHOR]
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Titel: |
יער יתיר: בחינה של השפעת צפיפות העומד וניהול הרעייה על תפקודו של יער מחטני על סף המדבר. (Hebrew)
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Autor/in / Beteiligte Person: | גרונוולד, יעל ; פוזנר, אלה ; רוטנברג, איל ; יקיר, דן ; קליין, תמיר |
Zeitschrift: | Yaar (Forrest): Magazine for Managing Forests & Open Areas, 2023-06-01, Heft 24, S. 51-58 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 2957-739X (print) |
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