منابع مشابه
Entomological studies for surveillance and prevention of dengue in arid and semi-arid districts of Rajasthan, India.
BACKGROUND & OBJECTIVES Rajasthan is one of the dengue endemic states of India. Very few studies have been published on entomological aspects of dengue in this state. Owing to water scarcity, inhabitants in desert areas overstore domestic water which leads to the persistence of dengue vectors within the domestic premises. Area specific knowledge on breeding, key containers and seasonal rhythms ...
متن کاملReturns and Economic Efficiency of Sheep Farming in Semi-arid Regions: A Study in Rajasthan
The economics of sheep-farming and its economic efficiency have been reported using field level data collected from the semi-arid regions of Rajasthan in 2005. The net return per average flock of 54 has been found Rs 25000 per year. The sheep-farming activity attracts labour employment of 581 mandays per annum, more than three-fourths of which is engaged in grazing. The female labour has been f...
متن کاملFarming system context drives the value of deep wheat roots in semi-arid environments
The capture of subsoil water by wheat roots can make a valuable contribution to grain yield on deep soils. More extensive root systems can capture more water, but leave the soil in a drier state, potentially limiting water availability to subsequent crops. To evaluate the importance of these legacy effects, a long-term simulation analysis at eight sites in the semi-arid environment of Australia...
متن کاملLivestock Farming Systems and Cattle Production Orientation in Eastern High Plains of Algeria, Cattle Farming System in Algerian Semi-Arid Region
This study was an attempt to devise productive orientations of cattle herds in eastern high plains of Algeria. In this regard, 165 farms randomly identified were investigated. The selection of breeders was based to existence of cattle on the farm, and the farmer proposed to investigation must have at least two cows. The approach taken was to identify all systems adopted by farmers in a region t...
متن کاملSimulation of the catchments hydrological processes in arid, semi-arid and semi-humid areas
Hydrological processes and their spatial distribution directly are relevant to climate, topography, geology, and land use in the watershed. Therefore, use of a model whit integrity and high performance for simulating the process in deferent watersheds is very important. In this study was assessment performance of semi-distributed SWAT model in simulating hydrology processes in three watersheds ...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1908
ISSN: 0036-8733
DOI: 10.1038/scientificamerican08221908-120