BBCH Ölçeğinde Sentinel-2 Görüntüleri ile Ayçiçeği ve Buğday Bitkilerinin Vejetatif Aşamalarının İzlenmesi

Year 2021, Volume: 38 Issue: 1, 46 - 52, 30.04.2021

Ömer Gökberk Narin , Ömer Faruk Noyan Saygın A Abdikan

https://doi.org/10.13002/jafag4681

Cited By: 2

Abstract

Günümüzde tarım arazilerinin azalması ve artan nüfus sayısı ile artan yiyecek talebi sebebiyle tarımsal ürünlerin haritalanması, incelenmesi ve takibi önem arzetmektedir. Uzaktan algılama tekniği ile birlikte tarımsal ürünlerin büyük ve küçük ölçekte takibini yapmak hızlı ve daha ekonomik olmuştur. Bu araştırmanın amacı, Tokat ilinde başlıca tarım ürünü olan buğday (Triticum aestivum L.) ve ayçiçeği (Helianthus annuus L.) bitkilerinin uydu görüntüleri yardımıyla üretilmiş farklı bitki indeksleri ile mahsüllerin vejetatif evrelerini izlemektir. Vejetatif evreler izlenirken Sentinel-2 uydu görüntülerinden üretilen Bitki İndeksleri (Vegetation Indices) kullanılmıştır. Normalize edilmiş fark bitki örtüsü indeksi (Normalized Differential Vegetation Index), Normalize edilmiş fark bitki örtüsü indeksi kırmızı-kenar (Normalized Differential Vegetation Index red-edge), Yeşil normalize edilmiş fark bitki örtüsü indeksi (Green Normalized Difference Vegetation Index) ve Normalize Fark Bitki örtüsü indeksi (Normalized Different Index) kullanılmıştır. Vejatatif evrelerin takibinde Biologische Bundesanstalt, Bundessortenamt and Chemical industry ölçeği kullanılmıştır. Çalışmanın sonucunda, Buğday ve ayçiçeği bitkisi için en yüksek yansıtım değerleri çiçeklenme döneminde görülmüştür. Sentinel-2 uydusunun zamansal çözünürlüğünün 5 gün olmasından dolayı Ocak ayından Eylül ayına kadar iki bitki için de her evrede görüntü elde edilmiştir. Bölgede üretimi fazla olan iki bitkinin dört farklı indekse göre yansıtım değerleri elde edilmiştir

Keywords

Ayçiçek (Helianthus annuus L.), BBCH-Code, Buğday (Triticum aestivum L.), Sentinel-2, VIs

Monitoring Vegetative Stages of Sunflower and Wheat Crops with Sentinel-2 Images According to BBCH-Scale

Abstract

Nowadays, due to the decrease in agricultural land and increasing population and food demand, mapping, examination and monitoring of agricultural products are important. With the remote sensing technique, it has been faster and economical to monitor agricultural products on a large scale. The aim of this study, is to monitor the vegetative stages of wheat (Triticum aestivum L.) and sunflower (Helianthus annuus L.) which are the main agricultural products in Tokat province of Turkey using different vegetation indices produced by satellite images. Vegetation Indices produced from multi-temporal Sentinel-2 satellite images were used for monitoring vegetative stages, namely, Normalized Differential Vegetation Index, Normalized Differential Vegetation Index red-edge, Green Normalized Difference Vegetation Index and Normalized Different Index. Biologische Bundesanstalt, Bundessortenamt and the Chemical Industry scale were used in the monitoring of vegetative stages for both plants. Since the temporal resolution of the Sentinel-2 satellites were 5 days, images were obtained at each stage of two plants from January to September. The reflectance values of two plants in all stages were obtained according to four different indices. As a result of the study, the highest reflectance values for wheat and sunflower plants were observed during flowering period.

Keywords

BBCH-Code, Sentinel-2, Sunflower (Helianthus annuus L.), VIs, Wheat (Triticum aestivum L.)

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