نتایج جستجو برای: climatic regions

تعداد نتایج: 379788  

Journal: :journal of research in health sciences 0
hamidreza heidari farideh golbabaei aliakbar shamsipour abbas rahimi forushani abbasali gaeini

background: heat stress evaluation and timely notification, especially using meteorological data is an important issue attracted attention in recent years. therefore, this study aimed at answering the following research questions: 1) can enthalpy as a common environmental parameter reported by meteorological agencies be applied accurately for evaluation of thermal condition of outdoor settings,...

Journal: :چغندرقند 0
محمد علی جواهری دانشجوی دکتری زراعت دانشگاه زابل محمود رمرودی دانشیار گروه زراعت، دانشکده کشاورزی، دانشگاه زابل محمدرضا اصغری پور دانشیار گروه زراعت، دانشکده کشاورزی، دانشگاه زابل مهدی دهمرده استادیار گروه زراعت، دانشکده کشاورزی، دانشگاه زابل علیرضا قائمی استادیار مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی

autumn sugar beet sowing has priority to its spring sowing in terms of economic productivity and water use efficiency. in khorasan razavi and khorasan-e-jonobi provinces, sugar beet is only sown in spring. therefore, it is necessary to evaluate the feasibility of autumn sugar beet sowing in these regions. using geographical information systems is the best and inexpensive way to identify suitabl...

Journal: :علوم باغبانی 0
کرامت اله سعیدی ابواسحاقی رضا امید بیگی

abstract this experiment was conducted to study the effect of south-west climatic conditions on quantitative and qualitative of fatty acids in dog rose (rosa canina l.) seeds collected from five regions including: semirom (isfahan province), kiar and gerdbishe (charmahal and bakhtiari province), yasuj and meymand (kohgiluye and boyer ahmad province). oil was extracted using soxhlet apparatus; t...

2013
Catherine Badgley John A. Finarelli

—In modern ecosystems, regions of topographic heterogeneity, when compared with nearby topographically homogeneous regions, support high species densities of mammals and other groups. This biogeographic pattern could be explained by either greater diversification rates or greater accommodation of species in topographically complex regions. In this context, we assess the hypothesis that changes ...

Journal: :international journal of architecture and urban development 2013
seyed majid mofidi shemirani niloufar nikghadam

effects of neglecting climatic patterns in buildings are more intense in severe climates such as tropical. it isresulting an excessive consumption of fossil fuels and consequently environmental pollutions in and after modern era. the objective of this research is to find climate-oriented intentions and solutions in tropical areas and compare them with dezful and bandar-e-lenge vernacular houses...

In recent years, rivers flows have significantly decreased due to regional or global climate change and human activities especially in the arid and semi-arid regions. In this study, the effect of climate change and human activities on the runoff responses was examined using hydrologic model simulation in the Lighvan basin located in the northwest of Iran. For determination of hydrologic model M...

Journal: :مرتع و آبخیزداری 0
مریم آذرخشی استادیار مجتمع آموزش عالی تربت حیدریه، دانشکدة کشاورزی و منابع طبیعی جلیل فرزادمهر استادیار مجتمع آموزش عالی تربت حیدریه، دانشکدة کشاورزی و منابع طبیعی مهدی اصلاح دانشجوی کارشناسی ارشد آبخیزداری دانشگاه مازندران حسین صحابی مربی مجتمع آموزش عالی تربت حیدریه، دانشکدة کشاورزی و منابع طبیعی

climate change is defined as long term and irreversible changes in the climatic behaviorof a region. many studies have been conducted in different regions of the world on climatechange. the results of these studies show considerable changes in climatic factors especiallyin precipitation and temperature. in this research, the trend of changes in annual and seasonalrainfall and temperature in 24 ...

2014
Vishwas Sudhir Chitale Mukund Dev Behera Partha Sarthi Roy

India is one of the 12 mega biodiversity countries of the world, which represents 11% of world's flora in about 2.4% of global land mass. Approximately 28% of the total Indian flora and 33% of angiosperms occurring in India are endemic. Higher human population density in biodiversity hotspots in India puts undue pressure on these sensitive eco-regions. In the present study, we predict the futur...

In recent decades, climate change and global warming have become to one of the critical global challenges that have attracted the attention of researchers. Knowing the effects of climate change on soil carbon can be used as the best tools regarding to understand the soil carbon cycle, therefore, this study was carried out to investigate and compare the amount of carbon storage in different clim...

2010
Benjamin F. Clegg Gina H. Clarke Melissa L. Chipman Michael Chou Ian R. Walker Willy Tinner Feng Sheng Hu

Despite their importance for evaluating anthropogenic climatic change, quantitative temperature reconstructions of the Holocene remain scarce from northern high-latitude regions. We conducted highresolution midge analysis on the sediments of the past 6000 years from a lake in south-central Alaska. Results were used to estimate mean July air temperature (TJuly) variations on the basis of a midge...

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