Sürdürülebilir Kalkınma Amaçları
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- MakaleAçık Erişim2024Evaluation of Antioxidant Properties of Wild and Cultivated Blueberry Leaves and Their Phenolic Compound
Okan, Onur Tolga; Ulusoy, Esra; Öz, Mehmet; Deniz, Ilhan
Aim of study: This study aimed to investigate the antioxidant activity and polyphenol and flavonoid content of blueberry leaves, which could have positive effects on human health. Area of study: The research was conducted in three cities of Turkiye's Karadeniz region, where blueberry cultivation is prevalent: Giresun, Trabzon, and Rize. Material and method: In this study, 29 blueberry leaves (27 cultivated and two wild) were selected as sample materials. The total phenolic content (Folin-Ciocalteu method), total flavonoid content (aluminum (III) chloride method), and total antioxidant capacity (DPPH and FRAP) of the samples were analyzed. Phenolic characterization was performed using HPLC. Main results: The total phenolic content varied between 8.36 and 121.61 mg GAE/g, whereas the total flavonoid content ranged from 0.91 to 3.07 mg QE/g. The results revealed that blueberry leaves had high antioxidant activity and contained considerable amounts of polyphenols and flavonoids. Chlorogenic acid was identified as the dominant compound in all leaves samples. Research highlights: These findings indicate that blueberry leaves could be a valuable source of antioxidants in the food and cosmetic industries, comparable to the fruit itself.
- MakaleAçık Erişim2023Analysis of Basin Characteristics for Stream Management Using GIS: A Case Study of Gümühane Micro-Watershed
Çakir, Gunay
Aim of study: Topography and climatic conditions have effected in determining the processes of the streams of the micro-watershed. Nowadays, the management plans were made for water and soil protection measures in the basins. Area of study: This study was carried outto characterize and prioritize the streams of the Gumushane upper Harsit micro-watershed using a GIS-based spatial approach. Material and methods: Fundamental watershed characteristics including drainage density, slope, land use types, and stream class were evaluated and interpreted for the Gumushane micro-watershed. Calculatea comprehensive value for each parameter, drainage density (Dd), flow frequency (Fs), slope (S), length of land flow (Lg), and land use (Lu) was used. Main results: The drainage density, stream flow frequency, and form factor of the microwatershed are from-4 to 26. Finally, the weighted rankings were summarized, and all micro-watersheds were categorized to five classes based on the risk index as very low risk, low risk, medium risk, high risk, and very high risk. This risk map overlaid to land use type maps in GIS where risk areas were evaluated in the finalrisk results. The 739 ha productive forest area within very high-risk areas was changed to non-risk parameters. Highlights: The carrying capacity of streams was calculated using the stream density of streams in the Gumushane micro-watershed. The risk values produced by streams that pass through neighborhoods where land use values for preventing erosion are present.
- MakaleAçık Erişim2023Assessing Spatio-Temporal Change and Dynamics of Forest Ecosystem Succession Using Patch Analysis
Sivrikaya, Fatih; Çakir, Gunay
Aim of study: This study focuses on creating a secondary forest succession (SFS) map between 1972 and 2014 according to the Clementsian theory based on land cover, assessing the spatio-temporal pattern of forest succession change, and determining the factors affecting the forest ecosystem.Area of study: This study was conducted at the cermik Forest Enterprise (FE) in Diyarbakir city, located in the Southeastern Anatolia Region of Turkiye.Material and methods: Clementsian theory, Remote Sensing (RS), and Geographical Information System (GIS) were used to generate the SFS map. Patch Analyst 4.0 was used to determine changes in spatiotemporal patterns with landscape indices.Main results: The total forested area increased from 32405.1 ha (13% of the study area) in 1972 to 45054.7 ha (18% of the study area) in 2014, with a net increase of 12649.6 ha. It was determined that the progressive succession area was 87736.7 ha, the regressive succession area was 39216.5 ha, and the unchanged succession area was approximately 129989.6 ha. The number of patches increased over a 42 -year period.Research highlights: The forest ecosystem was more fragmented, with patches becoming more irregular, complex, and edgy.
- MakaleAçık Erişim2021Effects of Using Solar Water Heating System on Fuelwood Consumption in Forest Villages
Çakir, Gunay; Tonyali, Suleyman
Ain of study: In this study, the effects of the use of solar water heating system of forest villagers in Gumushane were investigated. Material and methods: For this purpose, random selected by 70 forest village households were examined and the results were analyzed by One Sample T-Test. Within the scope of the research, face-to-face surveys were conducted with the families with the villagers who were determined with information provided by Department of Forest-Village Relations. The villagers were chosen among those who had used this solar energy heating system for at least 5 years. The data in the questionnaires were transferred to digital media and it was tried to determine how the forest villagers were affected by solar water heating systems. Main results: As a result, after the use of solar water heating systems; the consumption of firewood for heating has not changed. The consumption of wood used for cooking and the consumption of wood used for hot water has also decreased. Highlights: Thanks to this solar water heating system, carbon accumulation in forests has increased and a positive contribution has been made to climate change.
- Derleme MakaleAçık Erişim2019Organic Agriculture Potential of Eastern Black Sea Region
Okcu, Melih; Karabulut, Besim
Mankind caused a lot of harm to their environment unintentionally during agriculture. Thus nowadays production techniques that are compatible with nature, making the right use of the resources, targeting sustainable development, looking after animal welfare are beginning to spread throughout the world. Especially organic agriculture among those techniques gained a seat as it depends on customer preference. Organic agriculture that has the following five fundamental features: compatibility to nature, self sufficiency, sustainability, welfare, traceability began with the production of dried grape, dried figs, dried apricots and nuts in our country during the 1980s with the contractual agriculture system intending to export. During the following years, hardshell and dried fruits, frozen fruits and vegetables, fresh fruits and vegetables, spices and legumes followed the previous ones in export. Also, production and exportation of rose water, rose oil, olive oil, cotton and textile products increased considerably. In our country where there is a wide variety of products for organic agriculture, in eastern black sea region tea and nuts are the most cultivated products. Organic agriculture is carried out in every province of the region, the contribution of provinces in percentage as follows: Rize 42%, Ordu 25%, Artvin 13%, Trabzon 10%, Gumushane and Giresun 5%. Organic stock raising is done only in Gumushane and Ordu. Gumushane has the most promising potential for organic stock raising.
- MakaleAçık Erişim2019Determination of the Effects of Alucra Forest Planning Unit's Population Dynamics on Land Use Changes
Çakir, Gunay; Kaya, Latif Gurkan; Yücedag, Cengiz; Bayram, Sitki
Aim of study: This study is done to monitor temporal land use/land cover changes in a typical mountain watershed covering an area of 135441.0 ha in North Eastern of Turkey based on rural demographic dynamics and forest management plans belonging to the years 1987 and 2013 coupled by GIS analyses. It also investigates changes in the shape of land use class (LUC) over the period. Material and Methods: The changes occurring time wise and positional on the base of the local LUC was examined by benefiting from the forest management plans from 1987 to 2013. Moreover, the change of LUC around these areas has been examined with the 1000 m zones thrown around the settlement areas and correlated with the fast decrease of the population recent years. Demographic dynamics (increase or decrease) affect the usage of forest lands, as well. Main results: While there was an increase in the productive forest lands (pure coniferous and deciduous, and mixed forest) between 1987 and 2013. In the same periods there was a decrease in agricultural and sandy areas. The increase of patches in the productive forest lands mostly resulted from afforestation works conducted in the unproductive forest lands, and forestry maintenance activities. Another reason for this increase of forest patches is why people have immigrated to urban areas in the last years. Research Highlights: It can be said that one of the most important causes in the rise of the forest resources in the Alucra Forest Planning Units (FPU) is the time wise changes of social structure. Furthermore, the forestry activities in the study between 1987 and 2013 are also the other significant factor in this increase of forest resources.
- MakaleAçık Erişim2015Spatial Forest Management Planning: Basic Concepts And Modeling Techniques
Kadiogullari, Ali Ihsan; Keles, Sedat; Baskent, Emin Zeki; Bingöl, Ozkan
Spatial Decision Support System is indispensable to develop spatial planning alternative by integrating spatial parameters into forest management plans using ecosystem based multiple use forest management planning concept (EBMUFM). Spatial forest planning provides several opportunities to decision makers to generate spatially implementable harvest schedules and perform spatial analyses as part of integrated planning. This paper presents the role and importance of spatial forest planning in forest management, and evaluates it in the context of Turkish forestry. Basic concepts related to spatial forest planning are explained. Some important intuitive decision support techniques (modeling techniques) widely used in spatial forest management planning were introduced. Further, spatial decision support systems for forest management planning developed in various countries were provided. Finally, it is concluded that spatial forest planning is extremely needed in EBMUFM.