The determination of indicator plant species for steppe rangelands of Nevşehir Province in Turkey

Ünal, Sabahaddin; Mutlu, Ziya; Urla, Öztekin; Şahin, Bilal; Koç, Ali

doi:10.3906/tar-1207-15

Cited by 2 publications

(2 citation statements)

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“…The predominant growing seasons in the Central Anatolian Basin are spring (March to June) and autumn (September to October) [2]. The vegetation of the area is steppe vegetation with dominant plant species Festuca valesiaca, Artemisia sanctonium, Thymus sipyleus, Poa bulbosa, P. alpin a, Bromus cappadocicus, Stipa holosericea, Cynodon dactylon [16], [2], [3] , [4]. The shallow soils in the region are mostly clay and clay-loam, slightly alkaline, poor in phosphorous and organic matter, and have high potassium and lime levels.…”

Section: A Description Of the Study Areamentioning

confidence: 99%

“…The Central Anatolia Region covers 33.3% of 14.6 million hectares of total rangeland area in Turkey [1]. In the last 50 years, large rangelands have been converted to cropping lands which has negatively accelerated vegetation change, resulting in overgrazing and poor condition and productivity in remaining rangelands [2], [3], [4] . It is necessary to monitor this natural resources for proper management of those large areas.…”

Section: Introductionmentioning

confidence: 99%

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Monitoring rangeland vegetation through time series satellite images (NDVI) in Central Anatolia Region

Mermer¹,

Yıldız²,

Ünal³

et al. 2015

2015 Fourth International Conference on Agro-Geoinformatics (Agro-Geoinformatics)

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The study was carried out on natural rangeland areas of Central Anatolia Region of Turkey. The objective of this study is to monitor seasonal changes on rangeland vegetation by remote sensing data. Spectral reflectance of plants changes over time based on their phenological period. Differences in topography and climatical factors affect plant phenology. Vegetative growth period from green-up to senescence can be monitored by various vegetation indices. Normalized Difference Vegetation Index (NDVI) is one of the most widely-used indices that indicates the amaount of photosynthetically active green vegetation on the land. In this study, Spot-vegetation data have been used to show seasonal changes of rangeland vegetation in Central Anatolian rangelands. Satellite images cover time series of 1998-2009 years. Every year consist of 36 NDVI images, each representing 10 days composite NDVI data. Sampling points were selected representing certain ecological regions. NDVI values were extracted from those points of composit NDVI images. According to results of the study carried out in the Central Anatolian rangelands, NDVI patterns are similar and vegetation starts green-up at the beginnig of March and NDVI reaches peak values on mid of May. NDVI reaches peak value mid of June in rangeland of Sivas province.

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Section: A Description Of the Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%