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Linear programming approach for optimal forest plantation

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Journal of Forestry Research 2017年第2期28卷 299-307页

作者： Zohreh mohammadi soleiman mohammadi limaei Taymour Rostami Shahraji Department of Forestry Faculty of Natural ResourcesUniversity of GuilanSowmeh SaraP.O.BOX 1144Iran

The aim of this research was to identify species suitable for plantation. We first identified species for potentially suitable for plantation based on ecological capabilities regarding soil properties. We determined the area of plantation for different species based on ecological capabilities. Then, we collected relevant data such as growth patterns of different species, labor requirements for plantation and plantation cost. A linear programming model and two integer linear programming models were used for optimization. The appropriate species based on ecological capabilities were ash, elm, maple, oak and bald cypress. A linear programming model was used based on ecological capabilities classification to determine the land area of different species for plantation. Then, two integer linear programming models were employed to select the species for plantation. We set ecological properties unequal for all of the species in the first run of the integer programming model. Two groups were classified： group one included maple and ash; group two included bald cypress,oak and elm. The second integer programming model assumed equal ecological properties for all the *** of linear programming showed that maple and bald cypress were appropriate for plantation at the site and their plantation areas should be 151.3 and 355.3 ha, respectively. Results of the first integer linear programming model showed that maple and bald cypress would be economically profitable for plantation. The results of the second integer linear programming model showed that only bald cypress would be appropriate for plantation.

关键词： plantation integer timber sequestration forests planted forestry Alnus economically Eucalyptus

Estimation of a basal area growth model for individual trees in uneven-aged Caspian mixed species forests

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Journal of Forestry Research 2018年第5期29卷 1205-1214页

作者： Zohreh mohammadi soleiman mohammadi limaei Peter Lohmander Leif Olsson Department of Forestry Faculty of Natural ResourcesUniversity of Guilan P.O. Box 1144 Sowmeh Sara Iran Optimal Solutions in Cooperation with Linnaeus University Umea Sweden Department of Information Systems and Technology Facultyof Sciences Technology and Media Mid Sweden UniversitySundsvall Sweden

The aim of this study was to estimate a basal area growth model for individual trees in uneven-aged Caspian forests.A survey was conducted in order to find a natural forest without any harvesting activities,a so called ＇untouched forest＇ and an area was selected from the Iranian Caspian *** sample plots in the same aspect and of the same forest type were *** each plot,total tree height,diameter at breast height,distance of neighbor trees and azimuth were *** trees were selected and drilled with increment borer to determine the increment *** analysis was used to estimate the growth *** show that,for individual trees,there is a significant nonlinear relationship between the annual basal area increment,as the dependent variable,and the basal *** results also show that the basal area of competing trees has a positive influence on *** the increment is higher with more competing neighboring trees is possibly because plots with higher volume per hectare and more competition,most likely also have higher site index or better soil or better site productivity than the plot with lower volume per hectare.

关键词： Basal area increment Diameter growth Regression analysis Caspian forests

Risk assessment in poplar plantations:a case study from northern Iran

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Journal of Forestry Research 2020年第4期31卷 1225-1233页

作者： Samaneh Namdari Kamran Adeli soleiman mohammadi limaei Zahra Bahramabadi Department of Forestry Agricultural and Natural Resources FacultyLorestan UniversityKhoramabadLorestan 68151-44316Iran Department of Forestry Faculty of Natural ResourcesUniversity of GuilanP.O.Box 1144Sowmeh SaraGuilanIran

Linear risk programming was used to determine the optimum cultivation pattern to increase incomes of poplar *** clones of Populus deltoides *** *** examined in Guilan province,northern *** and price data were taken from previous research at the Safrabaste Poplar Research Station and in interviews with *** Lingo software was used to analyze the data in different forms of *** results show that when risk was considered,the optimal solution included the clones Pd63/51-x1,-Pd72/51-x3,Pd73/51-x4 and Pd79/*** was a high growth fluctuations of the clones Pd69/55-x2,Pd77.51-x5,and Pd caroliniensis-x7 and were not included in cultivation ***,the existing farm plans executed by local farmers,is neither profitoriented nor efficient in terms of income risk management according to risk efficient *** results could help farmers with different levels of risk-aversion to select proper planting plans.

关键词： Populus deltoides Farmers Linear risk programming Optimum cultivation patterns

A basal area increment model for individual trees in mixed continuous cover forests in Iranian Caspian forests

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Journal of Forestry Research 2020年第1期31卷 99-106页

作者： Nishtman Hatami Peter Lohmander Mohammad Hadi Moayeri soleiman mohammadi limaei Department of Forestry Faculty of Natural ResourcesGorgan University of Agricultural Sciences and Natural ResourcesP.O.Box 386mGorganIran Optimal Solutions in Cooperation with Linnaeus University Va¨xjo¨Sweden Department of Forestry Faculty of Natural ResourcesUniversity of GuilanP.O.Box 1144Sowmeh SaraIran

The aim of this study was to develop and test a new basal area growth model in mixed species continuous cover forests in northern *** 421 core samples from 6 main species in the forest area to develop our growth *** each plot,we measured variables such as total tree height(m),diameter at breast height(DBH)(cm)and basal area of larger trees as cumulative basal areas of trees(GCUM)ofDBH[5 *** empirical data were analyzed using regression *** was a statistically significant nonlinear function between the annual basal area increment,as the dependent variable,and the basal area of the individual trees and competition as explanatory *** area from the largest trees,was circular plot with area of 0.1 *** was estimated for trees of DBH>5 ***,we investigated the dependencies of diameter growth of different species on stand density at different levels of competition,and diameter development of individual trees through *** results indicate that competition caused by larger neighborhood trees has a negative effect on *** addition,the maximum diameter increment is affected by competition ***,the maximum diameter increment of species occurs when the trees are about 35–40 cm in dense-forest(40 to 0 m^2 per ha)and when the trees are about 60 to 70 cm in very dense forest(60 to 0 m^2 per ha)which is more likely to Caspian natural forests with high level density due to uneven-aged composition of stands.

关键词： Individual-tree model Iranian Caspian forests Continuous cover forestry Mixed stands Uneven-aged management

Quantitative and financial evaluation of non-timber forest products(case study:Zemkan basin forests,West of Iran)

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Journal of Forestry Research 2017年第2期28卷 371-379页

作者： Sohrab Moradi soleiman mohammadi limaei Peter Lohmander Mehrdad Khanmohammadi Faculty of Agricultural Sciences Payame Noor UniversityTehranIran University of Guilan Sowmeh SaraIran Department of Forestry Faculty of Natural ResourcesUniversity of GuilanSowmeh SaraIran Department of Forest Economics Faculty of Forest SciencesSwedish University of Agricultural SciencesUmeaSweden Department of Environmental Sciences Faculty of Natural ResourcesUniversity of GuilanSowmeh SaraIran

Although Zagros forests in western Iran lack industrial timber value due to the severe climate and socioeconomics problems, non-timber products are of great value and importance due to their high economic potential and also their potential to improve the welfare of forestdwelling and forest-fringe villagers. This study was done in the forests of the Zemkan basin, an important part of central Zagros forests, Iran, to recognize the non-timber forest products（NTFPS）, investigate their potential economic value and role in people＇s livelihood. Data, collected using forest cruising, participatory observations, interviews with indigenous and local persons and experts, identified wild pistachio resin, wild pistachio fruit, oak fruit and oak syrup（Shokeh manna） among the non-timber products in this basin with total potential harvestable NTFPs of 77.16,771.602, 13248.68, and 1324.868 tons per year,respectively. The economic rent from NTFPs is 33 US$/ha/year and its total expected values with consideration of real interest rate when the exploiter invests the capital in the bank（6.4 %） and when money is borrowed from the bank to execute the incorporated projects（8.4 %） are $516/ha and $393/ha, respectively. Furthermore, families＇ economic share from potential profit of NTFPs is annually$601 per household. In addition wild pistachio resin has the highest share of the total potential profit of NTFPs and its equal to 51 % of the total of potential profit of ***, it is suggested that decisions be made to increase the infrastructure and strengthen the local selling market to enhance the cash income from NTFPs. Forest participatory management practices are suggested to organize and improve traditional use of the forests.

关键词： timber forests profit resin annually recognize fringe income household execute

Goal programming approach for sustainable forest management(case study in Iranian Caspian forests)

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Journal of Forestry Research 2014年第2期25卷 429-435页

作者： soleiman mohammadi limaei Maryam Seddigh Kouhi Teymour Rostami Sharaji Department of Forestry Faculty of Natural ResourcesUniversity of Guilan

We used a goal programming technique to determine the optimal harvest volume for the Iranian Caspian forest. We collected data including volume, growth, wood price at forest roadside, and variable harvesting costs. The allometric method was used to quantify seques- trated carbon. Regression analysis was used to derive growth models. Expected mean price was estimated using wood price and variable harvesting costs. Questionnaire was used to determine the constraints and the equation coefficients of the goal programming model. The optimal volume was determined using the goal programming method according to multipurpose forest management. LINGO software was used for analysis. Results indicated that the optimum volumes of species were 250.25 ***-1 for beech, 59 ***-1 for hornbeam, 73 ***-1 for oak, 41 ***-1 for alder, and 32 ***-1 for other species. The total optimum volume is 455.25 ***-1.

关键词： goal programming sustainable forest management carbon sequestration Iranian Caspian forests

A Global Best-guided Firefly Algorithm for Engineering Problems

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Journal of Bionic Engineering 2023年第5期20卷 2359-2388页

作者： Mohsen Zare Mojtaba Ghasemi Amir Zahedi Keyvan Golalipour soleiman Kadkhoda mohammadi Seyedali Mirjalili Laith Abualigah Department of Electrical Engineering Faculty of EngineeringJahrom UniversityJahrom***FrasIran Department of Electronics and Electrical Engineering Shiraz University of TechnologyShiraz***Iran Department of Electrical and Computer Engineering Tarbiat Modares UniversityTehran***Iran Department of Computer Engineering Sari BranchIslamic Azad UniversitySari***Iran Department of Electrical Engineering Urmia BranchIslamic Azad UniversityUrmia571696896Iran Centre for Artificial Intelligence Research and Optimisation Torrens University AustraliaBrisbaneQLD4006Australia Yonsei Frontier Lab Yonsei UniversitySeoul03722South Korea Computer Science Department Prince Hussein Bin Abdullah Faculty for Information TechnologyAl Al-Bayt UniversityMafraq25113Jordan Hourani Center for Applied Scientific Research Al-Ahliyya Amman UniversityAmman19328Jordan Faculty of Information Technology Middle East UniversityAmman11831Jordan School of Computer Sciences Universiti Sains Malaysia11800George TownPulau PinangMalaysia University Research and Innovation Center Obuda University1034BudapestHungary School of Engineering and Technology Sunway University MalaysiaPetaling Jaya27500Malaysia Applied science research center Applied science private universityAmman11931Jordan

The Firefly Algorithm(FA)is a highly efficient population-based optimization technique developed by mimicking the flashing behavior of fireflies when *** article proposes a method based on Differential Evolution(DE)/current-to-best/1 for enhancing the FA's movement *** proposed modification increases the global search ability and the convergence rates while maintaining a balance between exploration and exploitation by deploying the global best ***,employing the best solution can lead to premature algorithm convergence,but this study handles this issue using a loop adjacent to the algorithm's main ***,the suggested algorithm’s sensitivity to the alpha parameter is reduced compared to the original *** GbFA surpasses both the original and five-version of enhanced FAs in finding the optimal solution to 30 CEC2014 real parameter benchmark problems with all selected alpha ***,the CEC 2017 benchmark functions and the eight engineering optimization challenges are also utilized to evaluate GbFA’s efficacy and robustness on real-world problems against several enhanced *** all cases,GbFA provides the optimal result compared to other *** that the source code of the GbFA algorithm is publicly available at https://***/projects/gbfa.

关键词： Firefly algorithm New movement vector Global best-guided firefly algorithm Global optimization Engineering design