نتایج جستجو برای: using remote sensing techniques

تعداد نتایج: 3871518  

Journal: :The Egyptian Journal of Remote Sensing and Space Science 2015

Journal: :Transactions of the ASABE 2021

Highlights Tree canopy architecture traits are associated with its productivity and management. Understanding these is important for both precision agriculture phenomics applications. Remote sensing platforms (satellite, UAV, etc.) multiple approaches (SfM, LiDAR) have been used to assess traits. 3D reconstruction of tree canopies allows the measurement height, crown area, volume. Abstract . li...

Journal: :International Journal of Innovative Research in Science, Engineering and Technology 2015

Journal: :International Journal of Computer Applications 2016

Journal: :journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences 2015

In recent years, rapid population growth has led to increase per capita water use in various sectors including agriculture and industry and a growing gap between water demand and water supply has emerged. Therefore, identifying and tracking changes in groundwater resources as an alternative and reliable source of surface water resources are so important to region located in the Middle East with...

Journal: :تولید گیاهان زراعی 0
اسماعیل محمدی احمد محمودی دانشجو بهنام کامکار عضو هیئت علمی دانشگاه علوم کشاورزی و منابع طبیعی گرگان امید عبدی کارشناس ارشد اداره منابع طبیعی استان گلستان.

background and objectives: food security has been most important concern of the mankind on the earth. on the other hand, agricultural productions have always been face by risk probability in the case of weather and changes in international markets, however this risk probability never undeleted completely, but could be minimized that by pre-harvesting yield estimation. in this study, different m...

Journal: :آب و خاک 0
مهدی اکبری زهرا سیف حمید زارع ابیانه

abstract evapotranspiration (et) is one of the most important components of the water balance, it is also one of the most difficult to measure. despite the importance of et, methods to obtain values of et are still limited. conventional methods are very local, ranging from point to field scale. estimates of the et over the entire area, especially for irrigated areas, are essential, as these can...

Journal: :مدیریت مخاطرات محیطی 0
امیر صفاری دانشیار و عضو هیأت علمی گروه ژئومورفولوژی، دانشگاه خوارزمی سعید رحیمی هرآبادی دانشجوی دکتری ژئومورفولوژی، گروه ژئومورفولوژی، دانشگاه خوارزمی سعید گودرزی مهر کارشناس ارشد سنجش از دور و gis، گروه سیستم اطلاعات جغرافیایی، دانشگاه تهران هادی کریمی دانشجوی دکتری ژئومورفولوژی، گروه ژئومورفولوژی، دانشگاه خوارزمی

identifying the change trends in forms of land surface is one of the main topics in geomorphic system. in this view, we try to assess the stability level of geo systems, boundary changes, instability and prediction of surface forms and processes response. this paper tries to conduct a comparative analysis on the geomorphic equilibrium paradigms, critical thresholds, environmental and natural ha...

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