Desertification could be traced back to one or many factors. Thus, to cope with such a phenomenon, there exists a need for a profound understanding of the processes and the causes. The study area of the current paper is the extent of Shahrekord’s Marghzar as an important case amongst the important ones of the province. In order to evaluate the roots of desertification in the area, the Iranian m...

The development of embedded systems in sustainable precision agriculture has provided an important benefit terms processing time and accuracy results, which influenced the revolution this field research. This paper presents a study on vegetation monitoring algorithms based Normalized Green-Red Difference Index (NGRDI) Visible Atmospherically Resistant (VARI) agricultural areas using systems. Th...

raisins are one of the most important parts of agriculture products to export and malayer gardens are one of the most valuables lands to produce vitis vinifera for raisin industry in recent years. the region has some problems to mange water resources due to climate change effects and drought. understanding of hydrology balance and drought period is one of most tools to manage the water crisis i...

Spatial variability in a crop field creates a need for precision agriculture. Economical and rapid means of identifying spatial variability is obtained through the use of geotechnology (remotely sensed images of the crop field, image processing, GIS modeling approach, and GPS usage) and data mining techniques for model development. Higher-end image processing techniques are followed to establis...

This paper introduces derivations of soil line influences on two-band vegetation indices (VIs) and vegetation isolines in the red and near infra-red reflectance space. Soil line variations are described as changes in the soil line parameters (slope and offset) and the red reflectance of the soil surface. A general form of a VI model equation written as a ratio of two linear functions (e.g., NDV...

An analytical form of relationship between spectral vegetation indices (VI) is derived in the context of cross calibration and translation of vegetation index products from different sensors. The derivation has been carried out based on vegetation isoline equations that relate two reflectance values observed at different wavelength ranges often represented by spectral band passes. The derivatio...

a r t i c l e i n f o Measurement of spectral reflectance provides a fast and nondestructive method of stress detection in vegetation. In this shallow subsurface CO 2 release experiment to simulate CO 2 leakage of geologically sequestered CO 2 , the radiometric responses of plants to elevated soil CO 2 concentration were monitored using a spectroradiometer. Spectral responses included increased...