نتایج جستجو برای: geographic and topographic characteristics
تعداد نتایج: 16904154 فیلتر نتایج به سال:
A b s t r a c t .
Background and objectives: In order to properly manage rangeland ecosystems, it is necessary to study the relationship between ecological factors in nature such as elevation, climate and soil factors with vegetation and living organisms. In this regard, the present study was conducted to investigate the relationship between species diversity and environmental factors (Physical and chemical char...
In the history of surveying and mapping, a large volumes of topographic maps and digital elevation models have been created at various scales throughout the world. However, positional errors and geometric distortions may exist in the topographic contour maps and their derived DEMs due to inaccurate ground control and poor navigation techniques in the early years. In this paper, we present a new...
Optimized agricultural management depends on reliable and detailed information describing the spatial distribution of soils, geology (parent material), and topography. Subsurface attributes (earth data) have in common that they vary through three-dimensional (3-D) space and through time. Our goal was to overcome current limitations of geographic information systems to manage, analyze, and visua...
Background and aims Wastes are defined as a solid, liquid and gas materials that is produced from human activities, as direct or indirect. There is the possibility of linking between different complex of Geographic Information, which have a descriptive and locative relationship, simultaneously. GIS (Geographic Information System) is as a bridge that it can relate resources and management d...
abstract gully erosion is a kind of water erosion that has high priority in fars province due to sediment production and enormous damages to land, roads and infrastructures. in this study, 15 gullies were selected and their morphometric characteristics, such as catchment area, soil, cover vegetation and climate were measured. in order to determine influential factors on the sediment production ...
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