An Investigation into the Carbon and Total Nitrogen Content of Suspended Sediments in Değirmendere Watershed and Its Implications for Erosion Risk

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Koralay N., Kara Ö., Çakıroğlu K.

FORESTIST, vol.1, no.1, pp.1, 2024 (ESCI)

  • Publication Type: Article / Article
  • Volume: 1 Issue: 1
  • Publication Date: 2024
  • Doi Number: 10.5152/forestist.2024.23057
  • Journal Name: FORESTIST
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus, CAB Abstracts, MLA - Modern Language Association Database, Directory of Open Access Journals, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.1
  • Karadeniz Technical University Affiliated: Yes


Soil erosion presents a global challenge, leading to severe repercussions such as soil degradation, compromised water 

quality, reduced agricultural output, and ecological harm, endangering life's sustainability on Earth. To preserve soil fertility and water quality within a watershed, it is crucial to compute soil loss quantities, sediment delivery ratios (SDRs), and 

nutrient concentrations within suspended sediments (SS). The Değirmendere watershed in Turkey's Trabzon province was 

selected for research area. The study employed the RUSLE method in coupled with Geographical Information Systems 

to quantify soil loss and SDR. Direct measurement techniques were used to calculate the annual SS, as well as carbon (C) 

and total nitrogen (TN) content within the SS. Over a span of twelve months spanning January to December 2019, water 

samples were collected. The outcomes revealed that the watershed experiences annual amount of soil erosion is 592,140 

tons year−1 with an average rate of 5.61 tons ha−1 year−1. The sediment delivery ratio (SDR) was calculated to be 0.38. Other 

analysis indicated that the annual estimated sediment load and the directly measured annual quantities are 225 013 and 

97 660, respectively. Both directly measured and predicted suspended sediment contain 0.15% TN and 1.13% C. The estimated sediment load is nearly two and a half times greater than the direct stream measurement (y = 2.304x). The outcomes 

of this research carry important implications for upcoming studies focused on the preservation of soil and water, a crucial 

measure in reducing soil erosion and improving water quality. The study provides guidance for future investigations concerning soil and water conservation