TY  - JOUR
AU  - Stajić, Branko
AU  - Janjatović, Živan
AU  - Kazimirović, Marko
AU  - Baković, Zvonimir
AU  - Obradović, Snežana
PY  - 2021
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/1236
AB  - This study was mainly aimed at constructing polymorphic site index curves for beech in the central (Rudnik mountain - RU, about 15,000 ha) and eastern (Zagubica - ZA, about 7,000 ha) part of its distribution in Serbia. To obtain suitable height-age data and evaluate the best-fit growth model we used 107 felled dominant beech trees. The Korf, Korsun and Chapman-Richards growth functions per site class were first parameterized and then mutually compared with respect to residual statistics and the significance of their parameters. They were additionally parameterized in line with empirical data on the value and age of the culmination of current annual height increment (CAI(h)). The obtained results indicated that the Chapman-Richards growth function showed the best results both by statistical (residuals standard error, significance of the parameters, distribution of residuals, and homosccdasticity) and by empirical criteria (the CAI(h) culmination time, the maximal values of the CAI(h), and the attained height of trees at a certain age) of the height-age beech modelling in the analyzed regions. The obtained polymorphic site index curves which classify sites with regard to their productivity can be very helpful in planning appropriate silvicultural treatments, and for decision-making in forest management planning, forest policy and ecology and, consequently, in the sustainable management of beech forests in Serbia and some neighbouring countries with a similar forestry sector development.
T2  - Šumarski list
T1  - Polymorphic site index curves for beech ( fagus sylvatica l.) In central and eastern Serbia
EP  - 41
IS  - 1-2
SP  - 31
VL  - 145
DO  - 10.31298/sl.145.1-2.3
UR  - conv_1532
ER  - 

@article{
author = "Stajić, Branko and Janjatović, Živan and Kazimirović, Marko and Baković, Zvonimir and Obradović, Snežana",
year = "2021",
abstract = "This study was mainly aimed at constructing polymorphic site index curves for beech in the central (Rudnik mountain - RU, about 15,000 ha) and eastern (Zagubica - ZA, about 7,000 ha) part of its distribution in Serbia. To obtain suitable height-age data and evaluate the best-fit growth model we used 107 felled dominant beech trees. The Korf, Korsun and Chapman-Richards growth functions per site class were first parameterized and then mutually compared with respect to residual statistics and the significance of their parameters. They were additionally parameterized in line with empirical data on the value and age of the culmination of current annual height increment (CAI(h)). The obtained results indicated that the Chapman-Richards growth function showed the best results both by statistical (residuals standard error, significance of the parameters, distribution of residuals, and homosccdasticity) and by empirical criteria (the CAI(h) culmination time, the maximal values of the CAI(h), and the attained height of trees at a certain age) of the height-age beech modelling in the analyzed regions. The obtained polymorphic site index curves which classify sites with regard to their productivity can be very helpful in planning appropriate silvicultural treatments, and for decision-making in forest management planning, forest policy and ecology and, consequently, in the sustainable management of beech forests in Serbia and some neighbouring countries with a similar forestry sector development.",
journal = "Šumarski list",
title = "Polymorphic site index curves for beech ( fagus sylvatica l.) In central and eastern Serbia",
pages = "41-31",
number = "1-2",
volume = "145",
doi = "10.31298/sl.145.1-2.3",
url = "conv_1532"
}

Stajić, B., Janjatović, Ž., Kazimirović, M., Baković, Z.,& Obradović, S.. (2021). Polymorphic site index curves for beech ( fagus sylvatica l.) In central and eastern Serbia. in Šumarski list, 145(1-2), 31-41.
https://doi.org/10.31298/sl.145.1-2.3
conv_1532

Stajić B, Janjatović Ž, Kazimirović M, Baković Z, Obradović S. Polymorphic site index curves for beech ( fagus sylvatica l.) In central and eastern Serbia. in Šumarski list. 2021;145(1-2):31-41.
doi:10.31298/sl.145.1-2.3
conv_1532 .

Stajić, Branko, Janjatović, Živan, Kazimirović, Marko, Baković, Zvonimir, Obradović, Snežana, "Polymorphic site index curves for beech ( fagus sylvatica l.) In central and eastern Serbia" in Šumarski list, 145, no. 1-2 (2021):31-41,
https://doi.org/10.31298/sl.145.1-2.3 .,
conv_1532 .

TY  - JOUR
AU  - Stajić, Branko
AU  - Janjatović, Živan
AU  - Aleksić, Predrag
AU  - Baković, Zvonimir
AU  - Kazimirović, Marko
AU  - Milojković, Novica
PY  - 2016
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/775
AB  - Data on average age and height of dominant moesian beech trees from 109 temporary sample plots were used to establish anamorphic site index curves (SI) calculated from seven growth functions (Chapman-Richards, Korf, Korsun, Hosfeld IV, Todorovic, Schumacher and Prodan). The base age for calculation of SI was 100 (SI100)). The guide curve method was applied. For the evaluation of the models, statistical as well as visual examinations were considered. The results showed that all the applied models had a relatively high coefficient of determination (R-2) value, indicating that the models accounted for more than 65% of the variation in the dominant height, which can be considered as large effects. Korsun's function shows the best overall statistics, which makes this model the most suitable for the construction of anamorphic site index curves for the study area. The obtained results are of importance for effective decision making in forest management planning, forest policy, and ecology in Serbia. Namely, regarding the relatively large sample and well-distributed sample units per age and site classes as well as the source of data (temporary sample plots), the developed site index curves and the method of stratifying the sites according to their productivity were performed for the first time in Serbia. Future studies should be performed in order to expand the knowledge on the dominant beech height-age relationships in the studied region using another well-known procedure of site index construction - polymorphic site index curves and stem analysis data.
PB  - Hrvatsko Sumarsko Drustvo
T2  - Šumarski list
T1  - Anamorphic site index curves for Moesian beech ( fagus x taurica popl.) In the region of Zagubica, eastern Serbia
EP  - 258
IS  - 5-6
SP  - 251
VL  - 140
DO  - 10.31298/sl.140.5-6.4
UR  - conv_2107
ER  - 

@article{
author = "Stajić, Branko and Janjatović, Živan and Aleksić, Predrag and Baković, Zvonimir and Kazimirović, Marko and Milojković, Novica",
year = "2016",
abstract = "Data on average age and height of dominant moesian beech trees from 109 temporary sample plots were used to establish anamorphic site index curves (SI) calculated from seven growth functions (Chapman-Richards, Korf, Korsun, Hosfeld IV, Todorovic, Schumacher and Prodan). The base age for calculation of SI was 100 (SI100)). The guide curve method was applied. For the evaluation of the models, statistical as well as visual examinations were considered. The results showed that all the applied models had a relatively high coefficient of determination (R-2) value, indicating that the models accounted for more than 65% of the variation in the dominant height, which can be considered as large effects. Korsun's function shows the best overall statistics, which makes this model the most suitable for the construction of anamorphic site index curves for the study area. The obtained results are of importance for effective decision making in forest management planning, forest policy, and ecology in Serbia. Namely, regarding the relatively large sample and well-distributed sample units per age and site classes as well as the source of data (temporary sample plots), the developed site index curves and the method of stratifying the sites according to their productivity were performed for the first time in Serbia. Future studies should be performed in order to expand the knowledge on the dominant beech height-age relationships in the studied region using another well-known procedure of site index construction - polymorphic site index curves and stem analysis data.",
publisher = "Hrvatsko Sumarsko Drustvo",
journal = "Šumarski list",
title = "Anamorphic site index curves for Moesian beech ( fagus x taurica popl.) In the region of Zagubica, eastern Serbia",
pages = "258-251",
number = "5-6",
volume = "140",
doi = "10.31298/sl.140.5-6.4",
url = "conv_2107"
}

Stajić, B., Janjatović, Ž., Aleksić, P., Baković, Z., Kazimirović, M.,& Milojković, N.. (2016). Anamorphic site index curves for Moesian beech ( fagus x taurica popl.) In the region of Zagubica, eastern Serbia. in Šumarski list
Hrvatsko Sumarsko Drustvo., 140(5-6), 251-258.
https://doi.org/10.31298/sl.140.5-6.4
conv_2107

Stajić B, Janjatović Ž, Aleksić P, Baković Z, Kazimirović M, Milojković N. Anamorphic site index curves for Moesian beech ( fagus x taurica popl.) In the region of Zagubica, eastern Serbia. in Šumarski list. 2016;140(5-6):251-258.
doi:10.31298/sl.140.5-6.4
conv_2107 .

Stajić, Branko, Janjatović, Živan, Aleksić, Predrag, Baković, Zvonimir, Kazimirović, Marko, Milojković, Novica, "Anamorphic site index curves for Moesian beech ( fagus x taurica popl.) In the region of Zagubica, eastern Serbia" in Šumarski list, 140, no. 5-6 (2016):251-258,
https://doi.org/10.31298/sl.140.5-6.4 .,
conv_2107 .