Standart Yağış İndeksi İle Ceyhan Havzasında Kuraklık Analizi

Year 2019, Volume: 9 Issue: 4, 2303 - 2312, 01.12.2019

Muhammed Çuhadar , Ela Atış

https://doi.org/10.21597/jist.544432

Cited By: 5

Abstract

Kuraklık, yağışların yıllar itibariyle gözlemlenen normal seviyelerinin altına düşmesiyle oluşan su arzında azalma sebebiyle yaşamsal faaliyetleri negatif yönde etkileyen bir afet olarak tanımlanır. Tarımsal kuraklık, topraktaki nem oranının iklimsel olarak uygun miktarın altına sürekli düşmesi, böylece bitkisel üretimi, dolaylı olarak hayvansal üretimi olumsuz etkilemesi anlamına gelir. Bu çalışma, Standart Yağış İndeksi (SPI) yöntemini kullanarak Ceyhan havzasında kurak dönemleri ve bölgeleri belirlemeyi amaçlamaktadır. Böylece kuraklığın etkilerini azaltacak politikalar kuraklıktan etkilenen bölgelerde geliştirilebilecektir. SPI, basitlik ve zamansal esneklik de dahil olmak üzere önceki indekslere göre daha gelişmiş olan ve su kaynakları için tüm zaman çizelgelerinde kullanılmasına izin veren çeşitli özelliklere sahiptir. Elde edilen sonuçlar, havzada son beş yılın kurak geçtiğini, kuraklığın yıllar itibari ile arttığını ve su verimliliğini artırmak için havzada en kurak ilçeler olan Afşin ve Elbistan’da kuraklığa dayanıklı bitki yetiştirmenin ve basınçlı sulama yöntemleri kullanımının daha akıllıca olduğunu göstermektedir.

Keywords

Kuraklık, yağış, su verimliliği, tarım, SPI

Drought Analysis in Ceyhan Basin Using Standardized Precipitation Index

Abstract

Drought is defined as a disaster that affects vital activities negatively due to the decrease in the water supply caused by falling rainfall below normal levels observed over the years. Agricultural drought means that the moisture content in the soil is consistently falling below the climatically appropriate amount, so this directly affects vegetative production and indirectly affects animal production. This study aims to determine dry periods and areas in the Ceyhan Basin by using the Standardized Precipitation Index (SPI). Thus, policies that will reduce the effects of drought will be developed in the regions affected by drought. The SPI has several features that are more advanced than previous indexes, including simplicity and temporal flexibility, and allow for use in all timelines for water resources. The results have shown that the past five years have been dry and the drought has increased over the years, and it is also wiser to grow drought-resistant crops and use pressurized irrigation methods in Afşin and Elbistan, the driest districts of the basin, to improve water efficiency.

Keywords

Drought, precipitation, water efficiency, agriculture, SPI

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