Filtreler
Impact of alkaline dust pollution on soil microbial biomass carbon

Kara, Ömer | Bolat, İlyas

Article | 2007 | Turkish Journal of Agriculture and Forestry31 ( 3 ) , pp.181 - 187

http://www.trdizin.gov.tr/publication/paper/detail/TmpZNU9URXg= https://hdl.handle.net/20.500.12628/711

The effect of different land uses on soil microbial biomass carbon and nitrogen in Bartin Province

Kara Ö. | Bolat I.

Article | 2008 | Turkish Journal of Agriculture and Forestry32 ( 4 ) , pp.281 - 288

The microbial biomass of soil is being increasingly recognized as a sensitive indicator of soil quality. Its knowledge is fundamental for sustainable environmental management. This study aimed to determine the impact of different land uses (forest, pasture, and agricultural lands) on soil microbial biomass carbon and nitrogen using the chloroform fumigation extraction (CFE) method. This study also aimed to determine interrelationships between microbial biomass C (Cmic) and N (Nmic) and the physicochemical characteristics of the soil. For this purpose, a total of 45 soil samples were taken from 3 different land uses located in the Ag . . .dac? Village in Bart?n. Additional core samples were collected from each sample site to determine other physico-chemical characteristics of the soils. The average microbial biomass C were found as 1028.29 µg g-1, 898.47 µg g-1, and 485.10 µg g-1, respectively, for forest, pasture, and agricultural soils. As with microbial biomass C, the average microbial biomass N was found as 129.99 µg g-1, 100.90 µg g-1, and 42.60 µg g-1, respectively, for forest, pasture, and agricultural soils. One-Way ANOVA showed a significant difference in microbial biomass C and N among the study areas. Microbial biomass C and N were shown to be significantly correlated to the physico-chemical properties of the soil, such as organic C, total N, clay, and pH. Present study clearly shows that land use has a significant effect on microbial biomass C and N in soil by altering natural soil characteristics under the same ecological conditions. © TÜBİTAK Daha fazlası Daha az

An operations research application in the particleboard industry [Yongalevha endüstrisinde bir yöneylem araştirmasi uygulamasi]

Karayilmazlar S. | Balaban E.

Article | 2000 | Turkish Journal of Agriculture and Forestry24 ( 1 ) , pp.11 - 18

In this study, a model was used for the optimization of product mix (the amounts of each product in the mixture) in particleboard industry by using linear programming. A theoretical model was constructed in which operations research methods and linear programming were applied to the maximization of the profit of a particleboard mill (KÖYKOBIR) as the consumer of industrial wood. To this end, 1993-1994-1995-1996 production, sales, stock quantities and costs as well as data related to capacities of the chipping, drying, pressing, sanding and gluing units were processed. Moreover, processing times of every product at these units were c . . .alculated. The linear programming model to determine optimum stock quantity, sale, production of particleboard at eight different thicknesses planned to be produced in 1997 was solved by industrial Lindo program and the results are shown in the tables Daha fazlası Daha az

Fire reterdant chemicals affecting combustion resistance of wood [Agaç malzemenin yanmaya dayanikliligini etkileyen emprenye maddeleri]

Örs Y. | Sönmez A. | Uysal B.

Article | 1999 | Turkish Journal of Agriculture and Forestry23 ( SUPPL. 2 ) , pp.389 - 394

Wood is an important material used in construction elements. However since it can be affected by biotic and abiotic deteriorating agents, it should be treated with chemical impregnating materials prior to use. In this study, the effects of water-soluble impregnating chemicals on the combustion resistance of wood was investigated. For this purpose, panels were prepared with oriental beech wood (Fagus orientalis L.) and pine wood (Pinus silvestris L), which are widely used in industry. These panels were impregnated with potassium nitrate (KNO3), zinc sulfate (Zn SO4), sodium tetra borate (Na2 B4 O7), sodium sulfate (Na2 SO4) and coppe . . .r sulfate (Cu2SO4). Two different methods were used for impregnation of the wood samples: extended dipping without pressure, and and full cell with either 60 minutes vacuum-60 minutes pressure, or 30 minutes vacuum-30 minutes pressure. The amount of weight lost during flame- and non-flame burning showed that impregnation with Cu2SO4, Zn SO4 and Na2 SO4 increased the fire resistant of pine and oriental beech wood. For this reason, the full-cell method is more effective in impregnation Daha fazlası Daha az

The effect of joint forms (Shape) and dimensions on the strengths of mortise and tenon joints

Tankut, Ali Naci | Tankut, Nurgül

Article | 2005 | Turkish Journal of Agriculture and Forestry29 ( 6 ) , pp.493 - 498

Yakın zamana kadar birleştirmeler ile ilgili detaylar çoğunlukla deneme yanılma metotlarına dayaiı geleneksel bir kapsamda değerlendiriliyordu. Günümüzde mobilya mühendislik tasarımında önceden belirlenmiş dirençte birleştirmelerin sağlanması gerekli görülmektedir. Bu bakımdan, çalışmada nominal olarak aynı şartlarda ve farklı biçimlerde yuvarlatılmış lamba-zıvana, dikdörtgen lamba-zıvana, dikdörtgen zıvanalı/yuvarlatılmış lambalı birleştirmelerin direnç değerleri araştırılmıştır. Ayrıca, her uç biçimi farklı kayıt genişliklerinde ve iki zıvana genişliğinde karşılaştırılmıştır. Sonuçlar dikdörtgen zıvanalı birleştirmelerin hem yuvar . . .latılmış zıvanalı hem de dikdörtgen zıvanalı/yuvarlatılmış lambalı birleştirmelerden yaklaşık % 15 daha dirençli olduğunu göstermiştir. Ayrıca; birleştirme geometrisi birleştirmelerin direnci üzerinde önemli derecede etkili çıkmıştır. Zıvana genişliği ve uzunluğu arttıkça birleştirmelerin direnci iyileşmiştir. Lambalı zıvanalı birleştirmelerde uç formlarının birleştirme direnci üzerinde fark edilir derecede etkili olduğu görülmüştür. Örneğin, dikdörtgen lambalı zıvanalı birleştirmeler yuvarlatılmış lambalı zıvanalı birleştirmelerden daha dirençli bulunmuştur. Fakat bu durum yuvarlatılmış lambalı zıvanalı birleştirmelerin sandalye konstrüksiyonlarında kullanımını kısıtlamaz, bilakis yuvarlatılmış lambalı zıvanalı birleştirmeler iç gerilmeleri yuvarlatılmış zıvanalara daha yeknesak dağıtarak ayak eiemanlarindaki çatlama riskini düşürürler ve bundan dolayı sandalye iskeletlerinde ön ayak/yan kayıt bağlantılarında kullanılabilirler. Ancak üçüncü tip birleştirme şekli olan dikdörtgen zıvanalı/yuvarlatılmış lambalı birleştirmeler sandalye konstrüksiyonları için tatminkâr bulunmamıştır. Until recently, detailing of joints was largely a matter of tradition, based on trial and error methods. However, in the engineering design of furniture, it is necessary for designers to create joints with a specified strength. This study was undertaken accordingly, to obtain the strength of round tenon/round mortise, rectangular tenon/rectangular mortise and rectangular tenon/round mortise joints assembled under nominally identical conditions with different end configurations. In addition, each end configuration was compared at rail widths, each with 2 widths of tenon. The results showed that rectangular end mortise and tenons are about 15% stronger than both round end mortise and tenons and rectangular end tenons fitting into round end mortise joints. Meanwhile, joint geometry has a significant effect on the strength of those particular joints. As tenon width and length were increased, the strength of the joint was correspondingly improved. The type of mortise and tenon end has an appreciable effect on the breaking strength of the joints as rectangular end mortise and tenons are stronger than round end mortise and tenon joints; however, this does not limit the use of round end mortise and tenon joints in chair construction. It may actually be advantageous to use round end tenon and mortise joints for the front leg/side rail joint in a chair frame as the internal stresses may be more uniformly distributed over the rounded ends of the mortise, thus reducing the risk of splitting the leg member. The third type of construction, with a square end tenon fitting into a round end mortise, was, however, less satisfactory Daha fazlası Daha az

Sakallı Kızılağaç (Alnus glutinosa (L.) Gaertn subsp. Barbata (C.A. Mey.) Yalt.) biyokütle tabloları

Saraçoğlu, Nedim

Other | 2000 | Turkish Journal of Agriculture and Forestry24 ( 2 ) , pp.147 - 156

The objective of this study was to estimate biomass per tree for Alnus glutinosaGaertn. subsp. barbata(C. A. Mey.) Yalt. stands in the east Black Sea region of Turkey, Dry-weight tables constructed by means of the material collected from 86 sample trees chosen in 19 constructed by means of the material collected from 86 sample trees chosen in 19 trials in the Black Sea region between Persembe and Kemalpasa within 10-1510 m altitude. Sample plots were established 0.04 ha in size in stands of various maturity stages, sites and density classes within the specified population. The plots were laid as squares (20x20 m) using the N-Sand E- . . .W cardinal directions. All living and dead trees larger than or equal to 5.1 cm dbh were measured and recorded in all sample plots. Where possible, at least two sample trees of average health and vigor and of unbroken top from each dbhob class of living trees and from different heights within the dbh classes were selected for mass and volume sampling. Each sample tree was cut at approximately 0.30 m above groung level. On each living tree height, diameter, double bark thickness and total age were measured. All the branches of the trees were cut, subdivided and piled separately in three groups. All leaf-bearing twigs and leaves were removed from the live branches. New cones and the old cones of the previous years were collected and piled separately. The main stem was cut at 1/3, 2/3 and the top of merchantable height. Green mass of the three sections of the merchantable stem, large live branches, small live branches, dead branches, new and old cones were taken and recorded separately.Green mass of twigs and leaves were taken and recorded together. Green mass the top portion of the main stem was taken andrecorded.One bunch of samples of twigs and leaves (each sample being about 150 gr), some samples from each pile of cones, two sample disks (8 cm to 10 cm length) one from the large and one from the small living branches, four sample disks 3 cm to 4 cm in thickness from the breast height, the lower and of the sections 1/2, 1/3 and of the top of the merchantable stem were collected. All the Sakallı Kızılagaç ( Alnus glutinosa (L.) Gaertn subsp. barbata(C.A. Mey.) Yalt.) Biyokütle Tabloları samples were put in polyethylene bags and brought to the laboratory for further measurements. The annual rings and diameters on the lower side of each disk taken from the stem were measured. A wedge was cut from each disk taken from the stem for wood density measurements. The green-mass and ovendry-mass measurements of the disks taken from the stem, leaves and twigs were taken. The following equation was used to estimate oven-dry weights of single tree components and whole tree.KA + $b_0$ + $b_1d^2$ + $b_2h$ The objective of this study was to estimate biomass per tree for Alnus glutinosaGaertn. subsp. barbata(C. A. Mey.) Yalt. stands in the east Black Sea region of Turkey, Dry-weight tables constructed by means of the material collected from 86 sample trees chosen in 19 constructed by means of the material collected from 86 sample trees chosen in 19 trials in the Black Sea region between Persembe and Kemalpasa within 10-1510 m altitude. Sample plots were established 0.04 ha in size in stands of various maturity stages, sites and density classes within the specified population. The plots were laid as squares (20x20 m) using the N-Sand E-W cardinal directions. All living and dead trees larger than or equal to 5.1 cm dbh were measured and recorded in all sample plots. Where possible, at least two sample trees of average health and vigor and of unbroken top from each dbhob class of living trees and from different heights within the dbh classes were selected for mass and volume sampling. Each sample tree was cut at approximately 0.30 m above groung level. On each living tree height, diameter, double bark thickness and total age were measured. All the branches of the trees were cut, subdivided and piled separately in three groups. All leaf-bearing twigs and leaves were removed from the live branches. New cones and the old cones of the previous years were collected and piled separately. The main stem was cut at 1/3, 2/3 and the top of merchantable height. Green mass of the three sections of the merchantable stem, large live branches, small live branches, dead branches, new and old cones were taken and recorded separately.Green mass of twigs and leaves were taken and recorded together. Green mass the top portion of the main stem was taken andrecorded.One bunch of samples of twigs and leaves (each sample being about 150 gr), some samples from each pile of cones, two sample disks (8 cm to 10 cm length) one from the large and one from the small living branches, four sample disks 3 cm to 4 cm in thickness from the breast height, the lower and of the sections 1/2, 1/3 and of the top of the merchantable stem were collected. All the Sakallı Kızılagaç ( Alnus glutinosa (L.) Gaertn subsp. barbata(C.A. Mey.) Yalt.) Biyokütle Tabloları samples were put in polyethylene bags and brought to the laboratory for further measurements. The annual rings and diameters on the lower side of each disk taken from the stem were measured. A wedge was cut from each disk taken from the stem for wood density measurements. The green-mass and ovendry-mass measurements of the disks taken from the stem, leaves and twigs were taken. The following equation was used to estimate oven-dry weights of single tree components and whole tree.KA + $b_0$ + $b_1d^2$ + $b_2h Daha fazlası Daha az

Variation in resistance to marine borers in commercial timbers from Turkey, as assessed by marine trial and laboratory screening

Sivrikaya, Hüseyin | Cragg, Simon M. | Borges, Luisa M. S.

Article | 2009 | Turkish Journal of Agriculture and Forestry33 ( 6 ) , pp.569 - 576

Türkiye’de kıyı inşaatlarında ve yat yapımında kullanılan odun türlerinin odun delici omurgasızlara karşı deniz denemesi ve laboratuar testleri yapılmıştır. Çalışmada kayın, meşe, kestane ve sarıçam odunları test edilmiştir. Deniz denemesi 5 ayın üzerinde Türkiye’nin güney kıyısında bulunan Mersin de gerçekleştirilmiştir. Bu süre boyunca teredinid’ lerin aktivitesi çok yüksek olmuştur ve sarıçam diri ve öz odun panelleri EN 275 standardında belirtilen puanlara göre maksimum olan 4 ile derecelendirilmiştir. Meşe panelleri ortalama 2.8 tahribat puanı ile kestane panelleri en az saldırıya maruz kaldığı için 2.3 ile sıralanmıştır. Test . . .edilen odun örneklerinden toplanan teredinidlere ait kabukların büyüklükleri arasında az miktarda farklılık bulunmuştur. Organizmaların saldırı derecesindeki farklılık, çam örneğine nazaran kestane ve meşe panellerinde çok az sayıda canlının yerleştiğini ifade edebilir. Teşhis edilen teredinidlerin yaklaşık yarısı Teredo navalis (Linnaeus 1758), dörtte birlik kısmı Bankia carinata (JE Gray 1827) diğer dörtte birlik kısmı ise Nototeredo norvagica (Spengler 1792) olmuştur. Organizmaların belli bir odun türünü tercih ettiğine dair bir kanıt bulunamamıştır. Ayrıca, paneller üzerinde bazı limnorid saldırılarına da rastlanmıştır. Kabuklu organizmalardan Chelura sp. kestane panelleri üzerinde bulunmuştur. Laboratuar denemesinde Limnoria quadripunctata (Holthuis 1949) nın beslenme oranı dışkı üretimlerine göre değerlendirilmiştir. Kestane, kayın ve meşe öz odunları üzerindeki ortalama beslenme oranı sarıçam diri ve öz odununa göre yarıdan daha az bulunmuştur. Odun yoğunluğu ile beslenme oranı arasındaki ilişki zayıf bulunmuştur. Commercial timbers from Turkey used in coastal construction and boat building were tested for their resistance to marine wood-boring invertebrates in a marine trial and in a laboratory screening test. The timbers tested were beech (Fagus orientalis Lipsky), oak (Quercus petraea (Mattuschka) Liebl.), chestnut (Castanea sativa Mill.), and Scots pine (Pinus sylvestris L.). The marine trial was conducted over a period of 5 months at Mersin on the southern Mediterranean coast of Turkey. Activity by teredinid (Mollusca, Bivalvia) borers during this period was very high, resulting in the maximum rating of 4 on the EN 275 scale for P. sylvestris sapwood and heartwood panels. Q. petraea panels averaged 2.8 and C. sativa panels were attacked the least with a mean rating of 2.3. There was little variation between the timbers tested in the size of the shells of the teredinids found, and so variation in the level of attack can be ascribed to fewer animals colonising C. sativa and Q. petraea than P. sylvestris. About one half of the teredinids identified were Teredo navalis (Linnaeus 1758), one quarter Bankia carinata (JE Gray 1827), and one quarter Nototeredo norvagica (Spengler 1792). No evidence of preference for a particular timber by any of these species was observed. Teeth on the ridges of the shells of teredinids from C. sativa were partially or wholly immersed in a dark brown substance that might reduce the boring efficiency of the shell. Some attacking by limnoriids (Isopoda, Crustacea) was also detected. Specimens of the amphipod crustacean Chelura sp. were observed on panels of C. sativa. In a laboratory screening trial in which the feeding rate of individual Limnoria quadripunctata (Holthuis 1949) was assessed by measuring faecal pellet production, feeding on heartwood of C. sativa, F. orientalis, and Q. petraea averaged less than half of that on the non-durable sapwood and heartwood of P. sylvestris. The correlation between wood density and feeding rate was weak Daha fazlası Daha az

Yongalevha endüstrisinde bir yöneylem araştırması uygulaması

Karayılmazlar, Selman | Balaban, Erdal

Other | 2000 | Turkish Journal of Agriculture and Forestry24 ( 1 ) , pp.11 - 18

In this study, a model was used for the optimization of product mix (the amounts of each product in the mixture) in particleboard industry by using linear programming. A theoretical model was constructed in which operations research methods and linear programming were applied to the maximization of the profit of a particleboard mill (KÖYKOBİR) as the consumer of industrial wood. To this end, 1993-1994-1995-1996 production, sales, stock quantities and costs as well as data related to capacities of the chipping, drying, pressing, sanding and gluing units were processed. Moreover, processing times of every product at these units w . . .ere calculated. The linear programming model to determine optimum stock quantity, sale, production of particleboard at eight different thicknesses planned to be produced in 1997 was solved by industrial Lindo program and the results are shown in the tables. In this study, a model was used for the optimization of product mix (the amounts of each product in the mixture) in particleboard industry by using linear programming. A theoretical model was constructed in which operations research methods and linear programming were applied to the maximization of the profit of a particleboard mill (KÖYKOBİR) as the consumer of industrial wood. To this end, 1993-1994-1995-1996 production, sales, stock quantities and costs as well as data related to capacities of the chipping, drying, pressing, sanding and gluing units were processed. Moreover, processing times of every product at these units were calculated. The linear programming model to determine optimum stock quantity, sale, production of particleboard at eight different thicknesses planned to be produced in 1997 was solved by industrial Lindo program and the results are shown in the tables Daha fazlası Daha az

Changes in Nitrogen Status of Soybean Under Influence of Symbiotically Fixed and Bound Nitrogen

Safaraliev, P.M. | Gadimov, A.G. | Troitskaya, C.N. | Nafisi, S. | Allahverdiev, S.R.

Article | 1999 | Turkish Journal of Agriculture and Forestry23 ( 4 ) , pp.389 - 392

Bu çalışmada, farklı azot kaynaklarının (nitrat 15N-NO3 ve simbiyotik N-N2 ) ve ontogenesisteki soyanın azot konumunun bağlantısı araştırılmıştır. Büyüme döneminde nitrat belirgin bir şekilde emilmiş, daha sonra, köklerin nodulleri tarafından fikse edilmiş azot, azotun ana kaynağı olmuştur. Azotun düşük dozda (bir bitkide 22.2 mg azot) uygulanmasında, bitkinin toplam azot miktarı yükselmiş ve azot fiksasyonu düşmemiştir. Soya bitkisinin organlarında simbiyotik ve nitrat azotun dağılımı, dengeli karakterli olduğu gösterilmiştir. The contribution of different nitrogen sources (nitrate 15N-NO3 and symbiotic N-N2 ) to the nitrogen statu . . .s of soybean in ontogenesis was studied. Nitrate was assimilated effectively during the vegetative growth, whereas later on the nitrogen-fixation by root nodules became the basic source of nitrogen. The applying of a low dose of nitrate (22.2 mg N/plant) increased the total nitrogen content in the plant and did not depress the nitrogen fixation. Distribution of the symbiotic and nitrate nitrogen among organs of soybean was proportional Daha fazlası Daha az

Ağaç Malzemenin Yanmaya Dayanıklılığını Etkileyen Emprenye Maddeleri

Örs, Yalçın | Sönmez, Abdullah | Uysal, Burhanettin

Article | 1999 | Turkish Journal of Agriculture and Forestry23 ( supp2 ) , pp.389 - 394

Yapı malzemesi olarak kullanılan ağaç malzeme bu maksatla kullanılan diğer malzemelerden üstün özelliklere sahip olmakla beraber, biyotik ve abiyotik zararlılardan olumsuz etkilenmektedir. Bu nedenle koruyucu kimyasal maddelerle emprenye edildikten sonra kullanılması önerilmektedir. Bu çalışmada, ağaç malzemeyi koruyucu kimyasal maddelerden suda çözünen tuzlarla emprenye etmenin yanmaya karşı dayanıklılığı üzerine etkileri araştırılmıştır. Bu maksatla yaygın olarak kullanılan sarıçam (Pinus sylvestris L.) ve doğu kayını (Fagus orientalis Lipsky) odunları ile, emprenye maddesi olarak; potasyum nitrat (KNO3), çinko sülfat (ZnSO4), sod . . .yum tetra borat (Na2 B4 O7), sodyum sülfat (Na2SO4) ve bakır sülfat (Cu2SO4) kullanılmıştır. Emprenye metodu olarak uzun süreli daldırma ve 1 saat vakum-1 saat basınç, 30 dakika vakum-30 dakika basınç olmak üzere dolu hücre metodları uygulanmıştır. Emprenye edilen numunelerde, alev kaynaklı ve alev kaynaksız yanma sırasında oluşan ağırlık kayıpları esas alınarak yapılan değerlendirme sonuçlarına göre; Cu2SO4, ZnSO4 ve Na2SO4 sarıçam ve kayında yanmaya dayanıklılık kazandırmışlardır. Bu bakımdan dolu hücre metodu ile yapılan emprenye işlemi daha etkili bulunmuştur. Wood is an important material used in construction elements. However since it can be affected by biotic and abiotic deteriorating agents, it should be treated with chemical impregnating materials prior to use.In this study, the effects of water-soluble impregnating chemicals on the combustion resistance of wood was investigated. For this purpose, panels were prepared with oriental beech wood (Fagus orientalis L.) and pine wood (Pinus silvestris L.), which are widely used in industry. These panels were impregnated with potassium nitrate (KNO3), zinc sulfate (Zn SO4), sodium tetra borate (Na2 B4 O7), sodium sulfate (Na2 SO4) and copper sulfate (Cu2SO4). Two different methods were used for impregnation of the wood samples: extended dipping without pressure, and and full cell with either 60 minutes vacuum-60 minutes pressure, or 30 minutes vacuum-30 minutes pressure.The amount of weight lost during flame- and non-flame burning showed that impregnation with Cu2SO4, Zn SO4 and Na2 SO4 increased the fire resistant of pine and oriental beech wood. For this reason, the full-cell method is more effective in impregnation Daha fazlası Daha az

Mechanical properties of heat-treated wooden material utilized in the construction of outdoor sitting furniture

Tankut N. | Tankut A.N. | Zor M.

Article | 2014 | Turkish Journal of Agriculture and Forestry38 ( 1 ) , pp.148 - 158

The present study examined the bending moment capacity and rigidity of T-type out-of-plane furniture joints and investigated the effects of heat treatment, wood species, and joint type factors on these joints. Heat treatment method clearly decreased the modulus of rupture (MOR) and the modulus of elasticity (MOE) of selected wood species. The bending strength of wood samples was reduced after the heat treatment, decreasing with increased loss of mass. For the heat-treated T-type joints, maximum bending strength values were obtained with Iroko (Chlorophora excelsa) for both mortise and tenon (MT) joints and blind MT (BMT) joints. The . . . lowest reduction in bending strength was observed in Ash (Fraxinus excelsior L.) constructed with MT joints and with BMT joints. In general, the BMT joint had higher bending strength than MT joints. The best rigidity constant (7.21) was obtained with control Iroko BMT joints, while the worst rigidity constant (15.10) was obtained with control Oriental spruce (Picea orientalis L.) MT joints. In terms of heat-treated samples, the best rigidity constant (7.59) was obtained with Black pine (Pinus nigra L.) MT joints, while the worst rigidity constant (14.01) was obtained with Oriental spruce BMT joints. The maximum performance in joint stiffness was determined for Iroko sample BMT joints and Iroko MT joints. Lowest reduction in joint stiffness was observed in Scotch pine MT joints and Ash BMT joints. Heat treatment, wood type, and joint type had a significant effect on the bending strength of T-type MT post-rail joints. BMT joints produced from heat-treated Iroko wood can be considered as the most durable T-type joint for outdoor sitting furniture construction. © TÜBİTAK Daha fazlası Daha az

Development of a method for priority setting in forestry research projects in Turkey

Daşdemir, İsmet

Article | 2005 | Turkish Journal of Agriculture and Forestry29 ( 3 ) , pp.211 - 220

Bu çalışma Türkiye'de kamu sektörü ormancılık araştırma projelerinde öncelik belirleme sorununa çözüm getirmek amacıyla ele alınmıştır. Bu amaçla uygulanması ve anlaşılması kolay ve pratik, çok boyutlu, objektif, dinamik, tutarlı ve bilimsel bir metot (kombine metot) geliştirilmiştir. Metodun teorik yapısı, özellikleri, kriterleri ve bu kriterlerin ağırlıklandırılması açıklanmıştır. Kriterlerin seçiminde ve ağıriıklandırılmasında, ulusal kalkınma ve sektörel planlardaki amaçlar ve öncelikler ile ormancılık araştırma projeleri öncelikleri arasında hiyerarşik olarak çok boyutlu tutarlılığı sağlayan, bir yaklaşım izlenmiştir. Çevre ve . . .Orman Bakanlığfna önerilen metot, Türkiye bazında 60 uzmanın katıldığı Araştırma Danışma Çalıştayında, 15 adet yeni ormancılık araştırma projesinin önceliğini belirlemek amacıyla uygulanmıştır. Uygulama sonunda, Türkiye'nin kalkınma amaçlarına, Ormancılık Araştırma Master Planı ve Ulusal Ormancılık Programındaki önceliklere uygun olarak ağaçlandırma, doğa koruma, erozyon kontrolü, mera ıslahı ve agroforestry gibi konuları içeren projelerin ilk sıralarda yer alması, metodun başarılı sonuçlar verdiğini ve kullanılabilir olduğunu göstermektedir. Metodun diğer bazı ülkelerdeki uygulamalardan ve benzer metotlardan farkları ortaya konularak, sağlayacağı faydalar kıt kaynakların etkin kullanımı ve sürdürülebilir kalkınma açısından değerlendirilmiş ve tartışılmıştır. This paper deals with the priority-setting problem in public research projects in the Turkish forestry sector. For this aim, a combined method has been developed, that is scientific, objective, dynamic, consistent, multidimensional, easily applicable and understandable. The theoretical framework, peculiarities and criteria of the method and weighting of the criteria are explained. Assuring hierarchical multidimensional consistency between the purposes and priorities in the national and sectoral plans with the priorities of forestry research projects was followed for selecting the criteria and weighting them. This method was suggested to the Ministry of Environment and Forestry and its application was implemented through a case study in the Research Consulting Workshop consisting of 60 participants to determine the priorities of new 15 forestry research projects on the basis of Turkey. The research projects dealing with plantation, nature conservation, erosion control, range improvement and agroforestry were primarily ranked in accordance with the priorities of development purposes, the National Forestry Program and the Forestry Research Master Plan of Turkey. This means that the method gives successful results and it is applicable. Differences between this method and some other similar methods and its benefits were discussed with regards to the effective use of scarce resources and sustainable development Daha fazlası Daha az

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