LIGHT REGIME IN NATURAL AND PLANTED STANDS OF THE CASPIAN FORESTS

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SAGHEB TALEBI KH.; JASHNI J.; MOHAMMADNEJAD KIASARI SH.; MOHAMMADI NASRABADI H.; PAYDAR M.

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Journal Paper

Paper Information

Journal: Iranian Journal of Forest and Poplar Research Year:2012 | Volume:20 | Issue:1 (47) Page(s): 165-181

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Information Journal Paper

Title

LIGHT REGIME IN NATURAL AND PLANTED STANDS OF THE CASPIAN FORESTS

Author(s)

Keywords

HYRCANIAN REGIONQ2

FOREST TYPEQ3

PLANTATIONQ2

LIGHTQ2

DIRECT AND DIFFUSE SUN LIGHTQ2

Abstract

Considering the LIGHT as one of the important ecological factors in silviculture and forest ecology, this paper aims to present some information about LIGHT regime at different forest stands. Sample plots were laid out in natural FOREST TYPEs, including: Ironwood (Parrotia persica)-Hornbeam (Carpinus betulus), Chestnut leaved Oak (Quercus castaneifolia)-Hornbeam, pure and mixed Beech (Fagus orientalis), Hornbeam-Beech and mixed broadleaves stands as well as in some pure and man made stands including chestnut leaved oak, Maple (Acer velutinum), Alder (Alnus subcordata) and Cypress (Cupressus sempervirens). Quantitative characteristics of the trees were assessed and one hemispherical photo was taken with fisheye camera within the plots. The photos were analyzed with GLA. Results showed that the canopy openness varied from 9.6% to 29.4% in the natural stands and from 0.9% to 17.2% in the PLANTATIONs. Relative LIGHT intensity varied between 11.8% (pure beech) and 35.9% (hornbeam-beech) in the natural stands and between 1.4% (pure cypress) and 25.1% (pure alder) in the PLANTATIONs. The minimum Leaf Area Index (LAI=1.4) was computed in the hornbeam-beech stand, whereas the maximum (LAI=5.8) was found in the pure cypress PLANTATION. A various range of sun flecks was observed within the studied stands from 20 sun flecks with 200 minutes of direct sun LIGHT per day in the ironwood-hornbeam stand up to 2100 sun flecks with receiving of 2 minutes direct sunlight per day in the pure alder PLANTATION. The maximum energy received in the studied stand of the Caspian forests was 43 MJm-2 in June. Knowledge of LIGHT climate in the forest stands can be applied in silvicultural tendings, to improve tree quality.

Cites

EFFECT OF GAP SIZE AND POSITION WITHIN GAPS ON GROWTH CHARACTERS AND SURVIVAL OF CHESTNUT-LEAVED OAK (QUERCUS CASTANEIFOLIA C. A. MEY.), CAPPADOCIAN MAPLE (ACER CAPPADOCICUM GLED.) AND CAUCASIAN ALDER (ALNUS SUBCORDATA C. A. MEY.)

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APA: Copy

SAGHEB TALEBI, KH., JASHNI, J., MOHAMMADNEJAD KIASARI, SH., MOHAMMADI NASRABADI, H., & PAYDAR, M.. (2012). LIGHT REGIME IN NATURAL AND PLANTED STANDS OF THE CASPIAN FORESTS. IRANIAN JOURNAL OF FOREST AND POPLAR RESEARCH, 20(1 (47)), 165-181. SID. https://sid.ir/paper/111607/en

Vancouver: Copy

SAGHEB TALEBI KH., JASHNI J., MOHAMMADNEJAD KIASARI SH., MOHAMMADI NASRABADI H., PAYDAR M.. LIGHT REGIME IN NATURAL AND PLANTED STANDS OF THE CASPIAN FORESTS. IRANIAN JOURNAL OF FOREST AND POPLAR RESEARCH[Internet]. 2012;20(1 (47)):165-181. Available from: https://sid.ir/paper/111607/en

IEEE: Copy

KH. SAGHEB TALEBI, J. JASHNI, SH. MOHAMMADNEJAD KIASARI, H. MOHAMMADI NASRABADI, and M. PAYDAR, “LIGHT REGIME IN NATURAL AND PLANTED STANDS OF THE CASPIAN FORESTS,” IRANIAN JOURNAL OF FOREST AND POPLAR RESEARCH, vol. 20, no. 1 (47), pp. 165–181, 2012, [Online]. Available: https://sid.ir/paper/111607/en

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