نتایج جستجو برای: physiographic conditions
تعداد نتایج: 848738 فیلتر نتایج به سال:
This study aimed to evaluate floristic list, life forms and chorology of plant species of Shalam protected area, which is in western Iran. This region characterized by various physiographic conditions and oak (Quercus brantii L.) as the dominant tree species. Plant species were collected by field survey in May and June 2016. The species were identified and their chorology, growth form and life ...
Numerical and parametrical indices are two of the most important and most widely used indices for assessing biodiversity in different societies. Nevertheless, their efficiency and selection in various ecosystems has always been one of the challenging issues of ecology. In this study, the numerical indices of diversity, richness and eveness, as well as abundance–ranking distribution models inclu...
This research was conducted to investigate regeneration conditions and evaluate quantitative and qualitative characterestics of pistacia atlantica subsp. mutica on different physiographic conditions of South Alborz Mountains. The role of effective factors on establishment of regeneration was also studied. The forest area map prepared, and then probed by systematic random network of statistica...
Experimental replication of watersheds of substantial size is impractical; it is impossible to achieve uniformity of topographic, edaphic, and physiographic conditions in such watersheds. Some other approach to the development of experimental error is needed if it is necessary to apply parametric statistical tests in this situation. We tackled this question with a study design that used time, r...
A nation's economic geography can have an enormous impact on its development. In Thailand, we show that a high concentration of enterprise in an area predicts high subsequent growth in and around that area. We also find spatially contiguous convergence of enterprise with stagnant areas left behind. Exogenous physiographic conditions are correlated with enterprise location and growth. We fit a s...
There is a need to automate terrain feature mapping so that to make the process more objective and less time consuming by using proper feature extraction techniques. The objective of this study was the use of object-oriented image analysis methods for the automatic extraction of physiographic regions and alluvial fan landform units. The study area was located in Nevada, USA. The data used inclu...
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