نتایج جستجو برای: semi arid regions

تعداد نتایج: 495434  

Journal: Desert 2010
H Arzani H Azarnivand M.R. Bihamta Z Ahmadi

For determination of grazing capacity, information of forage quality is essential which is influenced by various factors. The main objective of this research was investigation on effects of species, phenological stages, and life form on values of forage quality indices of six range species. Species were two grasses (Bromus tomentellus and Dactylis glomerata), two forbs (Ferula ovina and Coronil...

Journal: Desert 2009
A. Salajegheh A.R Keshtkar M. Bakhshaei M. Najafi Hajivar S. Chavoshi

Abstract A significant deficiency of most computer models used for stream floodplain analysis is that the locations of structures impacted by floodwaters, such as bridges, roads, and buildings, cannot be effectively compared to the floodplain location. This research presents a straightforward approach for processing output of the HEC-RAS hydraulic model, to enable two- and three dimensional f...

2013
Himani Bhatia P. K. Gupta P. L. Soni

Prosopis juliflora (Sw.) DC. commonly known as mesquite, vilayti babul, vilayti kikar belongs to family leguminosae sub family (mimosoidae). It’s a thorny ever-green to semi-evergreen fast growing tree capable of growing in arid and semi-arid regions and attaining heights up to 10m. A polysaccharide was isolated from Prosopis juliflora seed and purified. Purified juliflora polysaccharide has be...

Journal: :Water 2023

In the coming years, climate change is predicted to impact irrigation water demand considerably, particularly in semi-arid regions. The aim of this research investigate expected adverse impacts on management Saudi Arabia. We focus influence requirements Al Quassim (97,408 ha) region. Different models were used for intermediate emission SSP2-4.5 and high SSP5-8.5 Coupled Model Intercomparison Pr...

Nowadays the growth of deserts is one the most important problems in Iran. This phenomenon has many reasons such as growth of population, global changes in the climates and many undesirable consequences such as the erosion of agricultural soils and immigration of rural people to urban regions mainly to the capital of Iran, Tehran. Isfahan province is one of the semi-arid and desert regions in t...

2008
J. Thomas A. H. Alfarhan A. G. Miller L. Othman

A brief analysis on the distribution range of some of the species dominating in the arid and extra arid regions of North Africa and Arabian Peninsula is presented. These species are belonging to three phytogeographical categories namely: Saharo-Sindian, Sudano-Deccanian and Tropical African-Indian elements. Species included for this study are either disjunct or they have a wider distribution, s...

Journal: :caspian journal of environmental sciences 2010
m. k. motamed

nowadays the growth of deserts is one the most important problems in iran. this phenomenon has many reasons such as growth of population, global changes in the climates and many undesirable consequences such as the erosion of agricultural soils and immigration of rural people to urban regions mainly to the capital of iran, tehran. isfahan province is one of the semi-arid and desert regions in t...

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