نتایج جستجو برای: slope direction and elevation
تعداد نتایج: 16851892 فیلتر نتایج به سال:
the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...
This study aims at comparing the performance of MaxEnt and logistic regression in preparing the predictive habitat distribution map of Thymus kotschyanus and determining the factors affecting in the northern of Ardabil Province rangelands. 28 sites were selected and at each site, three transects with a length of 100 m and on each transect ten 1m2 plots were established. Soil samples were taken ...
Landslide impact is potentially hazardous to an urban environment. Landslides occur at certain slope levels over time and require practical analysis assess the nature of where a landslide likely occur. Thus, acquiring very high-resolution remote sensing data plays significant role in determining surface. For this study, 12 conditioning parameters with 10 × cell sizes that have never been previo...
The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) can measure the elevations of Earth’s surface using a sampling strategy with unprecedented spatial detail. In daytime mountainous areas where signal–noise ratio (SNR) weak beam data is very low, current algorithms do not always perform well on extracting signal photons from (i.e., many were missed). This paper proposes an effective algor...
The aim of this research was to generate a landslide hazard zoning map by using the multivariate linear regression method in the Kohsar Watershed, Northwest of Tehran. Initially, we used field surveys, local interview and review of studies outside and inside of Iran. Eleven effective factors were recognized on landslide. These factors included: slope degree, slope aspect, elevation, lithology, ...
Introduction: Mars Orbiter Laser Altimeter (MOLA) onboard Mars Global Surveyor (MGS) spacecraft produced a large homogeneous data set of precise elevation measurements along MGS tracks [1]. We have used this data set to map and study statistical characteristics of kilometerand subkilometer-scale topography [e.g., 2, 3]. In the present work we use MOLA data set to map and study slope asymmetry o...
Abstract The archaeological site prediction model can accurately identify areas to enable better knowledge and understanding of human civilization processes social development patterns. A total 129 Neolithic data in the region were collected using Xiangyang area as study area. An eight-factor index system elevation, slope, slope direction, micromorphology, distance water, position, planar curva...
agroecological zoning of gorgan agricultural lands for hulless barley cropping base on boolean logic
this research was conducted to zoning of gorgan agricultural lands for hulless barley cropping using evaluation of some environmental factors base on boolean logic and by geographic information system. for this purpose, agro-ecological requirements of hulless barley firstly, identified according to scientific resources. rating and thematic requirement maps were then provided. studied environmen...
loess deposit is one of the most important quaternary deposits of northeastern parts of iran which have high erosion rate. this study was performed with field- rainfall- simulator which has a plot area of 1 m2 in gorganrood drainage basin to determine the effective factors on sediment yield. landuse, slope and erosion feature maps were overlaid in gis to obtain land unit map. then on work units...
Range suitability and its grazing capability are the most important criteria in rangeland analysis and monitoring. Determination and monitoring of factors affecting on range suitability and diagnosis of them are important .All range ecosystem components affect range suitability. Which among them physical and vegetational factors, forage production, water resources and sensitivity to erosion wer...
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