Journal of Biological and Environmental Sciences
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Browsing by Author "0000-0002-5591-4788"
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Item The effect of greenhouse structural features on the determination of greenhouse insurance premium(Bursa Uludağ Üniversitesi, 2022-11-21) Şen, Bora; Gündoğdu, Kemal Sulhi; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; 0000-0002-5591-4788The structures that are built to create suitable environments for growing plants by controlling environmental conditions by artificial means are called greenhouses. Greenhouses should be made in accordance with the characteristics of the geographical and climatic conditions in the regions to be established. Some of the important parameters here are the roof geometry of the greenhouse, the profile thickness to be used, the direction of the greenhouse installation, the geographical terrain and the height of the flooded wall. In our country, where tropical climate characteristics have been observed recently, it has become increasingly common for greenhouse growers to apply for greenhouse insurance against natural disasters. In addition to the severity of the natural disaster, the static resistance properties of the greenhouse are also effective in the amount of damage that occurs in greenhouses in natural disasters. The level of being affected by natural disasters will be different between the greenhouse built by the standards and the greenhouse built without complying with the standards. For this reason, it would be more appropriate to determine the insurance premium value according to the strength characteristics of the greenhouse. In this study, the features of SERAPRO software, which is tried to be developed for projecting and evaluating greenhouses, have been introduced. With the software in question, it will be possible to project the greenhouse with the most suitable construction features and to produce an analysis report showing the status of the existing greenhouses. According to the results of the analysis, it is thought that the greenhouse insurance policies already issued by TARSİM will be charged with more scientific scaling.Item Satellite remote sensing-based irrigation performance assessment of the Mustafakemalpaşa irrigation area in Bursa, Türkiye(Bursa Uludağ Üniversitesi, 2023-01-20) Gündoğdu, Kemal Sulhi; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; 0000-0002-5591-4788Given the increasing pressure on water for agricultural irrigation, coupled with unpredictable climate conditions, it is critically important to improve irrigation water management for sustain crop production. Satellite remote sensing (RS)-based approaches are helpful for investigating cost-effectively spatio-temporal variations of irrigation performance at scales ranging from individual fields to the entire scheme level. Using Landsat images within the Python module for the Surface Energy Balance Algorithm for Land model, it was investigated the spatiotemporal performance variations of the Mustafakemalpaşa irrigation area during 2020 cropping season. Actual evapotranspiration (ETa), Uniformity of Water Consumption (UWC), and Crop Water Productivity (CWP) performance indicators were evaluated. The results showed that the performance of the Mustafakemalpaşa varied depending on the geographical position in the irrigation area. Our findings highlight the opportunity to improve the uniformity of water consumption in the area. Based on this study, PySEBAL can serve as basis for improved Mustafakemalpaşa irrigation water management in decision support tools.Item A study on drought analysis using time series, standardized precipitation index (SPI) and standardized precipitation evapotranspiration index (SPEI) in Bursa region(Bursa Uludağ Üniversitesi, 2022-10-19) Uysal, Gülce Arıkan; Gündoğdu, Kemal Sulhi; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Biyosistem Mühendisliği Bölümü.; 0000-0002-5591-4788All agricultural activities are directly related to the climate. In recent years, temperature increases and changes in precipitation regimes adversely affect the Mediterranean Basin, including Türkiye. While increasing temperatures and irregular precipitation rise the need for irrigation in crop production in some regions, excessive and irregular rainfall in some areas seriously damages production. Nowadays, climate change has been accepted by many climate scientists as a problem that cannot be ignored. In our country, drought is one of the natural disasters that will affect agricultural production the most. In this study, a drought analysis was made for Bursa, one of Türkiye’s important cities in agricultural production. In addition, non-parametric Mann-Kendall and Sen's Trend Analyzes were conducted between 1990 - 2019 for precipitation and temperature values. According to the trend analysis results, statistically significant trends could not be reached in the precipitation data; increasing trends were observed in the temperature data. SPI (Standardized Precipitation Index) and SPEI (Standardized Precipitation and Evapotanspiration Index) methods were used for drought analysis; although extreme values were reached for the years 1960 – 2019 due to both ways, it was determined that normal drought levels were dominant in general.