Erosion Susceptibility Analysis in Datça and Bozburun Peninsulas, Turkey

Ustaoğlu, Beyza; Ikiel, Cercis; Dutucu, Ayşe Atalay; Koç, Derya Evrim

doi:10.1007/s40995-020-01053-5

Cited by 15 publications

(8 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First of all, the trend analysis of the yield values of the crops was examined. According to the findings obtained from IPCC reports, after the 2000s, the effects of climate change, especially in the Mediterranean Basin, affected many physical and human environments, primarily agriculture (Ustaoğlu et al, 2021). In order to see this effect in the trend in crop yields, Mann Kendall Trend analysis was applied to yield values.…”

Section: Methodsmentioning

confidence: 99%

The Effects of Atmospheric Oscillations on Crop Yield in the Mediterranean Region, Turkey

Uzun¹,

Ustaoğlu²

2021

Preprint

Self Cite

View full text Add to dashboard Cite

In the last century climate change is a major threat to biodiversity, ecosystem services, and human well‐being. Atmospheric oscillations that occur at the regional oceanic flow pattern may affect significantly the climate of the Earth. In this study, we investigate effects of ENSO (El Nino Southern Oscillation) and NAO (North Atlantic Oscillation) on the Mediterranean crop yield using the Nino 3, Nino3.4, Nino 4, ONI and NAO indices. Olive, which is a bioindicator type in the Mediterranean, and cotton and grapes with high yield and economic value crops were examined. As a method, firstly, Mann Kendall rank correlation test was applied to the yield values of the crops. After the 2000s, it has been determined that the trend of yield has changed and was obtained an increasing trend. Secondly, the correlation between the yields and the indices were determined with the Spearman correlation coefficient. Accordingly, a high correlation of 50% and 80% was found at the p ≤ 0.05 and p ≤ 0.00 significance level in the phenological periods of the crops. The highest correlations were determined especially during flowering period with El Nino indices. The frequency of the correlation detected with the NAO indece is weak. The effect on the efficiency of the phases when El Nino indices are strong was examined graphically. Accordingly, in the 1997 and 2015-2016 periods, when the El Nino phenomen was very stong, there were sharply decreases in the crop yields. It is seriously affects the countries whose economic activity is based on agriculture in the Mediterranean Basin, and it is likely to affect food industry in the future.

show abstract

Section: Methodsmentioning

confidence: 99%

The Effects of Atmospheric Oscillations on Crop Yield in the Mediterranean Region, Turkey

Uzun¹,

Ustaoğlu²

2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Among these methods, the Revised Universal Soil Loss Equation (RUSLE) is one of the most widely used (Renard et al, 1991;Renard et al, 1994;Renard et al, 1997). The RUSLE method, which emerged with the revision of the USLE method developed by the United States Department of Agriculture (USDA), is used in many studies depending on factors such as the data set being based on long-term measurements, the evaluation of many parameters with the help of computer technologies (GIS), and its convenience in terms of use (Avcıoğlu et al;Mutlu & Soykan, 2021;Ustaoğlu et al, 2021;Nguyan et al, 2022;Habtu & Jayappa, 2022;Aykır & Fıçıcı, 2022).…”

Section: Extended English Summarymentioning

confidence: 99%

Erosion risk analysis in Sapanca Lake Basin

Ikiel

2022

HumanSciences

View full text Add to dashboard Cite

The aim of this study is to determine the erosion susceptibility areas in the Sapanca Lake Basin. Sapanca Lake basin is located in the east of the Marmara Region. Due to its natural beauty, transportation opportunities and proximity to metropolitan areas, it is a preferred area for permanent and temporary living. Increasing population and growing settlement areas have created significant changes in the land cover, and depending on this situation, the erosion sensitivity of the research area has increased. In this study, Landsat 8 OLI satellite image dated 24.07.2022 was used to determine the land use status. RUSLE evaluates Precipitation Erosive (R), Soil Erosion Susceptibility (K), Slope Length and Slope Slope (LS), Ground Cover (C) and Erosion Control (P) Factors in Geographic Information Systems to determine the amount of soil loss. The Equation (Revised Universal Soil Loss Equation) method was applied. According to the RUSLE method, erosion susceptibility map of Sapanca Lake Basin was obtained and susceptibility classes were determined. These susceptibility classes are six categories: very light, mild, moderate, strong, severe and very severe. According to the map obtained, very light in 46.3% (13607.8 ha), mild in 7.5% (2211.5 ha), moderate in 15.3% (4493.8 ha), strong in 7.9% (2317.9 ha), Severe erosion susceptibility was detected in 9.8% (2864.1 ha) and very severe erosion sensitivity in 13.2% (3872.4 ha).The average annual soil loss is less than 5 tons/ha/year.The most sensitive areas in terms of the severity of erosion are the steep slopes of the Samanlı Mountains in the southand moderately sloping slopes in the north. The shores of Sapanca Lake and its surroundings are areas with slight erosion sensitivity. In addition to the effect of precipitation and soil characteristics on the land cover, the sloping areas opened to settlement due to human activities due to incorrect land use have increased the sensitivity of erosion. It is recommended to plan for a sustainable land use in the adaptation process to climate change, taking into account the areas susceptible to erosion. Extended English summary is in the end of Full Text PDF (TURKISH) file. Özet Bu çalışmanın amacı Sapanca Gölü Havzası’nda erozyon duyarlılık alanlarının belirlenmesidir. Sapanca Gölü Havzası, Marmara Bölgesi’nin doğusunda yer alır. Doğal güzelliği, ulaşım imkanları ve metropolitan alanlara yakınlığı nedeniyle devamlı ve geçici bir süre yaşam için tercih edilen bir alandır. Artan nüfus ve büyüyen yerleşim alanları arazi örtüsünde önemli değişimler oluşturmuş bu duruma bağlı olarak araştırma alanının erozyon duyarlılığı artmıştır. Bu çalışmada arazi kullanım durumunu belirlemek için 24.07.2022 tarihli Landsat 8 OLI uydu görüntüsü kullanılmıştır. Toprak kaybı miktarını belirleyebilmek için Coğrafi Bilgi Sistemlerinde, Yağış Erozif (R), Toprak Erozyon Duyarlılığı (K), Eğim Uzunluğu ve Eğim Dikliği (LS), Zemin Örtüsü (C) ve Erozyon Kontrol (P) faktörlerini değerlendiren RUSLE (Düzenlenmiş Evrensel Toprak Kaybı) metodu (Revised Universal Soil Loss Equation) metodu uygulanmıştır. RUSLE yöntemine göre; Sapanca Gölü Havzası’nın erozyon duyarlılığı haritası elde edilerek, duyarlılık sınıfları belirlenmiştir. Bu duyarlılık sınıfları; çok hafif, hafif, orta, güçlü, şiddetli ve çok şiddetli olmak üzere altı sınıftan oluşur. Elde edilen haritaya göre inceleme alanının %46,3’ünde (13607.8 ha) çok hafif, %7,5’inde (2211.5 ha) hafif, %15,3’ünde (4493.8 ha) orta, %7,9’unda (2317.9 ha) güçlü, %9,8’inde (2864.1 ha) şiddetli ve %13,2’sinde (3872.4 ha) çok şiddetli erozyon duyarlılığı tespit edilmiştir. Yıllık ortalama toprak kaybı 5 ton/ha/yıldan azdır. Erozyonun şiddeti bakımından en duyarlı bölgeler güneyde Samanlı Dağları’nın dik yamaçları ile kuzeyde hafif ve orta eğimli yamaçlardır. Sapanca Gölü kıyıları ve çevresi hafif derecede erozyon duyarlılığı taşıyan alanlardır. Arazi örtüsünde yağış ve toprak özelliklerinin etkisi yanında yanlış arazi kullanımı sebebiyle insan faaliyetleri sonucu özellikle turizm ile yerleşmeye açılan eğimli alanlar erozyon duyarlılığını arttırmıştır. İklim değişikliğine uyum sürecinde sürdürülebilir bir arazi kullanımı için erozyona duyarlı alanlar dikkate alınarak planlama yapılması önerilmektedir.

show abstract

“…About 60% of the lands have medium (6-12%), steep (12-20%), and very steep (20-30%) slopes due to the very poor topography and the prevalence of mountains and hills. Due to severe erosion in 28% of the land and very severe erosion in 32% (Total 60%), soils generally have shallow (20 cm-50 cm) and very shallow (less than 20 cm) depths (Ustaoğlu et al, 2021).…”

Section: Figure 1 Datça-bozburun Special Environmental Protection Areamentioning

confidence: 99%

The Charming Threat Against the Groundwater Resources: Tamarix Trees Utilized for Landscaping

Akıner¹,

Lačnjevac²

2021

European Journal of Science and Technology

View full text Add to dashboard Cite

Erosion Susceptibility Analysis in Datça and Bozburun Peninsulas, Turkey

Cited by 15 publications

References 42 publications

The Effects of Atmospheric Oscillations on Crop Yield in the Mediterranean Region, Turkey

The Effects of Atmospheric Oscillations on Crop Yield in the Mediterranean Region, Turkey

Erosion risk analysis in Sapanca Lake Basin

The Charming Threat Against the Groundwater Resources: Tamarix Trees Utilized for Landscaping

Contact Info

Product

Resources

About