The Beech Tree
نویسندگان
چکیده
منابع مشابه
Fitting Tree Height Distributions in Natural Beech Forest Stands of Guilan (Case Study: Masal)
In this research, modeling tree height distributions of beech in natural forests of Masal that is located in Guilan province; was investigated. Inventory was carried out using systematic random sampling with network dimensions of 150×200 m and area sample plot of 0.1 ha. DBH and heights of 630 beech trees in 30 sample plots were measured. Beta, Gamma, Normal, Log-normal and Weibull prob...
متن کاملParametric identification of a functional-structural tree growth model and application to beech trees (Fagus sylvatica)
Functional-structural models provide detailed representations of tree growth and their application to forestry seems full of prospects. However, due to the complexity of tree architecture, parametric identification of such models remains a critical issue. We present the GreenLab approach for modeling tree growth. It simulates tree plasticity in response to changes of their internal level of tro...
متن کاملTree Species Diversity in the Stands of Beech and Valuable Broadleaves in the Area of the Np `djerdap`
The tree species diversity in mixed stands of beech and valuable broadleaves was researched in the area of the National Park `Djerdap` on fifteen sample plots (total study area of about 5 ha). For this purpose, the following diversity measures were applied: (1) Shannon`s index H', (2) Simpson`s index (Simpson 1949), (3) McIntosh`s diversity index D' (McIntosh 1967), (4) Hill’s N1 diversity numb...
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Beech bark disease (BBD) results in high levels of initial mortality, leaving behind survivor trees that are greatly weakened and deformed. The disease is initiated by feeding activities of the invasive beech scale insect, Cryptococcus fagisuga, which creates entry points for infection by one of the Neonectria species of fungus. Without scale infestation, there is little opportunity for fungal ...
متن کاملBeech forest VOC fluxes
Methanol and other VOC fluxes from a Danish beech forest during springtime G. W. Schade, S. J. Solomon, E. Dellwik, K. Pilegaard, and A. Ladstätter-Weissenmayer Dept. Atmos. Sci., Texas A&M Univ., 3150 TAMU, College Station, TX 77843, USA IUP, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany Biosystems Department, Risø National Laboratory for Sustainable Energy, Technical Universi...
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ژورنال
عنوان ژورنال: Nature
سال: 1944
ISSN: 0028-0836,1476-4687
DOI: 10.1038/154492a0