نتایج جستجو برای: physiographical effect

تعداد نتایج: 1641704  

Journal: :پژوهش های علوم و فناوری چوب و جنگل 0

different ecologic factors influence on forming, development and sustaining of the plant communities, among which physiographic variables are the most important ones. the aim of this study was to identify forest types and effect of physiographical factors such as sea level height, slope and aspect of the site on quantitative characteristics of forest types in 2nd district of vaz forest with are...

The present study was performed to identify diversity indices of herb layer functional groups and its relation to physiographical factors in central Zagros forest, Lorestan. For this purpose, sampling of herbaceous plants was conducted randomly in plots of 2×2 m (n=50) in site. All plants were classified to functional groups including forbs, graminoids and legumes, also Raunkiaerchr('39')s life...

Journal: :Revista da Sociedade Brasileira de Medicina Tropical 2006
Ana Lúcia Lyrio de Oliveira Anamaria Mello Miranda Paniago Maria Elizabeth Cavalheiros Dorval Elisa Teruya Oshiro Cássia Rejane Leal Marcos Sanches Rivaldo Venâncio da Cunha Márcio Neves Bóia

This study, realized from October 2000 to January 2003 describes the clinical epidemiological characteristics of visceral leishmaniasis in Três Lagoas, Mato Grosso do Sul State, Brazil. A total of 149 cases were confirmed, with a predominance of the male gender (71.1%). The principal age group was aged 0 to 4 years old (42%). The clinical picture included fever (97.3%), esplenomegaly (85.9%) an...

2017
Ziqiang Du Xiaoyu Zhang Xiaoming Xu Hong Zhang Zhitao Wu Jing Pang

Variability in satellite measurements of terrestrial greenness in drylands is widely observed in land surface processes and global change studies. Yet the underlying causes differ and are not fully understood. Here, we used the GeogDetector model, a new spatial statistical approach, to examine the individual and combined influences of physiographic factors on dryland vegetation greenness change...

ابراهیمی, مهدیه, دهواری, عبدالحمید , شیخ, زهرا ,

Regional analysis is the stability method to improve estimates of flood frequency, which has become one of the dynamic sectors in hydrology and the new theories are testing, constantly. Application of geostatistical method is an innovation in this field for regional flood analysis.This technique is based on the interpolation of hydrological variables in the physiographical space instead of usin...

باقری, جلال, صالحی, علی, طاهری آبکنار, کامبیز,

  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...

Journal: :Sains Malaysiana 2021

Linear regression is widely used in flood quantile study that consists of meteorological and physiographical variables. However, linear does not capture the complex nonlinear relationship between predictor target It rare to find a hydrological application using group method data handling (GMDH) model, artificial bee colony (ABC) algorithm, ensemble technique, precisely predicting ungauged sites...

Journal: :Stochastic Environmental Research and Risk Assessment 2021

Regional Frequency Analysis (RFA) relies on a wide range of physiographical and meteorological variables to estimate hydrological quantiles at ungauged sites. However, additional catchment characteristics related its drainage network are not yet fully understood integrated in RFA procedures. The aim the present paper is propose integration several characterizing systems RFA, evaluate their adde...

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