Results 11 to 20 of about 117,891 (325)

Estimation of changes in bioclimatic potential values on the territory of Belarus using normalised difference vegetation index (NDVI)

open access: yesЖурнал Белорусского государственного университета: География, геология, 2021
Relations between bioclimatic potential changes and changes in state of crops have been analysed. NDVI (normalised difference vegetation index) and biological productivity parameter by D. I. Shashko (Bk) were used for this purpose. Average values of both
Vladimir F. Loginov   +1 more
doaj   +1 more source

بررسی اثرات الگوی رگبار و ویژگی‌های منطقه بر رسوبدهی حوزه آبخیز [PDF]

open access: yesMuhandisī va mudirīyyat-i ābkhīz, 2023
مقدمهخاک یکی از مهمترین منابع طبیعی هر کشور است که نقش کلیدی در امنیت غذایی، اقتصاد ملی و کشاورزی پایدار ایفا می­‌کند. فرسایش خاک، از بارزترین عوامل هدررفت خاک است که فرسایش بارانی از شکل­‌های مهم آن است.
پریسا فتاح   +2 more
doaj   +1 more source

MODELING WHEAT YIELD BY USING PHENOLOGYCAL METRICS DERIVED FROM SENTINEL2 IN ARID AND SEMI-ARID REGIONS- A case study in MOROCCO

open access: yesAfrican Journal on Land Policy and Geospatial Sciences, 2023
Context and background Wheat is one of the oldest cultivated plants in the world and has always been one of the most important staples for millions of people around the world and especially in North Africa, where wheat is the most used crop for ...
Adra IDRISSI   +5 more
doaj   +1 more source

تخمین تبخیروتعرق واقعی براساس الگوریتم‌های تک منبعی و دومنبعی سنجش از دوری (مطالعه موردی: برازجان) [PDF]

open access: yesمجله آب و خاک, 2020
شناخت و ارزیابی تبخیر و تعرق از سطوح گیاهی یک ابزار اساسی در محاسبه بیلان آب و تخمین نیاز آبی و دسترسی به آن است. در این تحقیق به­منظور بررسی توزیع مکانی تبخیروتعرق و رابطه آن با سنجش از دور در مقابل داده­های لایسیمتری به عنوان شاهد در منطقه برازجان واقع
بهاره بهمن آبادی   +1 more
doaj   +1 more source

Satellite remote sensing reveals a positive impact of living oyster reefs on microalgal biofilm development [PDF]

open access: yes, 2018
Satellite remote sensing (RS) is routinely used for the large-scale monitoring of microphytobenthos (MPB) biomass in intertidal mudflats and has greatly improved our knowledge of MPB spatio-temporal variability and its potential drivers.
B. Cognie   +9 more
core   +13 more sources

Analysis of spatiotemporal variations of drought and its correlations with remote sensing-based indices via wavelet analysis and clustering methods

open access: yesHydrology Research, 2022
Beside in situ observations, satellite-based products can provide an ideal data source for spatiotemporal monitoring of drought. In this study, the spatiotemporal pattern of drought was investigated for the northwest part of Iran using ground- and ...
Roghayeh Ghasempour   +3 more
doaj   +1 more source

TLS-bridged co-prediction of tree-level multifarious stem structure variables from worldview-2 panchromatic imagery: a case study of the boreal forest [PDF]

open access: yes, 2016
In forest ecosystem studies, tree stem structure variables (SSVs) proved to be an essential kind of parameters, and now simultaneously deriving SSVs of as many kinds as possible at large scales is preferred for enhancing the frontier studies on ...
Fang, Xing   +9 more
core   +2 more sources

Detection of Changes in Land Cover and Land Surface Temperature Using Multi Temporal Landsat Data

open access: yesEnvironment and Natural Resources Journal, 2020
Land cover changes and land surface temperature have rosein the tropical regions of Myanmar especially in the surrounding areas of Magway city due to the rapid growth of urban sprawl.
Aye Aye Myint
doaj   +1 more source

Detection of irrigation inhomogeneities in an olive grove using the NDRE vegetation index obtained from UAV images [PDF]

open access: yes, 2019
We have developed a simple photogrammetric method to identify heterogeneous areas of irrigated olive groves and vineyard crops using a commercial multispectral camera mounted on an unmanned aerial vehicle (UAV).
Jorge Sánchez, Juan   +2 more
core   +2 more sources

Machine learning to understand patterns of burn severity from the SCU Lightning Complex Fires of August 2020

open access: yesCalifornia Fish and Wildlife Journal, 2022
The SCU Lightning Complex Fire started on 16 August 2020 and burned more than 395,000 acres of woodlands and grasslands in six California counties. Satellite images of pre-fire green vegetation biomass from both 2020 springtime (moist) and summertime ...
Christopher Potter, Olivia Alexander
doaj   +1 more source

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