نتایج جستجو برای: msavi

تعداد نتایج: 78  

More than one-third of the earth is characterized by arid and semi-arid climate and desertification phenomenon in these areas has been intensified in recent decades. This study aims to investigate the trend of desertification using vegetation indices and Iranian Model of Desertification Potential Assessment (IMDPA) in Abarkooh Plain, Yazd province, Iran. The satellite images (Landsat images in ...

Journal: :Dicle üniversitesi mühendislik fakültesi mühendislik dergisi 2021

Uzaktan algılama, yer bazlı cihazlar, uçaklar veya uydular gibi uzak platformlardan yeryüzündeki nesneler hakkında bilgi edinmeyi sağlayan bilim dalıdır. Uydu verileri farklı analizler yardımıyla işlenerek çeşitli alanlarda kullanılabilmektedir. görüntülerinden elde edilen bitki örtüsü indeksleri yeryüzüne ilişkin bilgiler sağlamaktadır. Kuraklık haritalarının oluşturulması, ürün deseni belirle...

Journal: : 2022

In the context of Bonn Challenge, Pakistan started Forest Landscape Restoration (FLR) in 2014. This study assessed growth performance and survival rate young plantations developed linear regression models by using Landsat-8 data. The results showed that fast-growing species such as Eucalyptus camaldulensis Robinia pseudoacacia have shown a good compared to Pinus roxburghii Cedrus deodara. veget...

Journal: :Remote Sensing 2021

Estimating the fractional coverage of photosynthetic vegetation (fPV) and non-photosynthetic (fNPV) is essential for assessing growth conditions in arid areas monitoring environmental changes desertification. The aim this study was to estimate fPV, fNPV bare soil (fBS) lower reaches Tarim River quantitatively. acquired field data during September 2020 obtaining fBS. Firstly, six indices (PVIs) ...

Journal: :E3S web of conferences 2023

The article presents the analysis of widespread spectral indexes results Earth remote sensing data thematic processing to reveal most representative one for applying under conditions critical increase groundwater level and salinity as well salinized soil. Long-term monitoring multispectral images LandSat-8 satellite were collected Golodnostepsky irrigation land. Sites with disturbing ameliorati...

Journal: :Indonesian Journal Of Earth Sciences 2022

While it is anticipated that there would be some similarities amongst spectral Vegetation Indices (VIs) because the majority of indices use red and NIR bands, also expected variances. The NDVI, derived earlier by Rouse (1973), commonly used VI, have meagre understanding relationship between NDVI another VIs. Similarly, investigations on correlation LST other VIs (other than NDVI) in both dry ra...

Journal: :Sustainability 2021

Soil salinization poses a significant challenge for achieving sustainable utilization of land resources, especially in coastal, arid, and semi-arid areas. Timely monitoring soil salt content its spatial distribution is conducive to secure efficient agricultural development these regions. In this study, address the persistent problem Yellow River Delta China, feature space method was used constr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زابل - دانشکده کشاورزی و منابع طبیعی 1392

چکیده پایش زمانی تغییر عوارض سطح زمین بوسیله سنجش از راه دور برای درک روابط متقابل بین انسان و پدیده های طبیعی و تصمیم گیری بهینه، از اهمیت به سزایی برخوردار است. در این مطالعه تصاویر لندست tm سال ???? و سال ???? بخشی از مراتع تفتان شهرستان خاش ، به مساحت ?????? هکتار،با استفاده از نرم افزار idrisi آنالیز گردیدند. در مرحله نخست شاخص ها در محیط نرم افزار idrisi ساخته شدند. در بررسی همبستگی، بان...

Journal: :Sustainability 2022

For the Sentinel-2 multispectral satellite image remote sensing data, due to rich spatial information, traditional water body extraction methods cannot meet needs of practical applications. In this study, a random forest-based RF_16 optimal combination model algorithm is proposed extract bodies. The research process uses images and DEM data as basic collected 24 characteristic variable indicato...

Journal: :Cuadernos de investigación geográfica 2023

Ain Sefra is part of the Ksour Mountains and it's situated in southwestern Algeria, where climate arid. The study area progressively facing regression degradation exacerbated by change. These trends point to a significant acceleration desertification drought loss production systems that play critical social, ecological, economic role region. To better understand natural hazard dryness impact ch...

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