نتایج جستجو برای: gotvand irrigation scheme
تعداد نتایج: 264585 فیلتر نتایج به سال:
Today Environmental Impact Assessment (EIA) is known as one of the most important tools for decision makers in the construction of civil and industrial projects towards sustainable development. In the past, projects were evaluated based on cost and benefit analysis regardless of the physical and biological environmental effects and its socio-economical impacts. According to the Department of En...
A novel method is introduced for integrating satellite derived irrigation data and high-resolution crop type information into a land surface model (LSM). The objective is to improve the simulation of land surface states and fluxes through better representation of agricultural land use. Ultimately, this scheme could enable numerical weather prediction (NWP) models to capture land-atmosphere feed...
Rift Valley fever (RVF) is a mosquito-borne viral zoonosis that is found in most regions of sub-Saharan Africa, and it affects humans, livestock, and some wild ungulates. Outbreaks are precipitated by an abundance of mosquito vectors associated with heavy persistent rainfall with flooding. We determined the impact of flood-irrigation farming and the effect of environmental parameters on the eco...
Geostatistics and geographic information system (GIS) were performed to characterize the spatial variability of soil water characteristics in western semiarid area of Heilongjiang Province and delineate the spatial distributions of the variables. On the basis of data source spatial distribution and professional knowledge, the study site was divided into four irrigation management zones. Then st...
Gotvand olia dam is the highest embankment dam in Iran. this dam is the last dam built on the Karun River before entering khuzestan plain in gotvand area. the main worry of the analyst before the gotvand dam impoundment, has been the dissolution of the anbal salt in the reservoir of the dam and affected the karun water at the bottom of the dam. the aim of this study was checking the effects o...
While Evans-Pritchard was conducting his now-famous studies of the Azande and the Nuer in southern Sudan, changes were taking place in the great plains between the two Niles south of Khartoum that would forever alter the course of Sudanese history. In partnership with multinational capital, the British were turning millions of acres inhabited by farmers and pastoralists into a vast irrigation p...
the greatest limitations to agricultural development and production in iran are scarcity of water resources, ineffective irrigation scheduling and wasteful water usage. avenues discussed for optimum water use include improving water productivity by improving irrigation scheduling, farm water management and water profitability. the present study evaluated current water use and ways to improve wi...
This paper is devoted to the practical real-time application of anew fuzzy gain scheduling control scheme to amulti-pool open irrigation canal prototype. This control scheme successfully regulates ihe downstream level of three pools of ihe prototype canal in response to the inflow rate variations. The scheme combines functionai iiizzy logic with gain scheduling.
The study on ‘‘pro-poor intervention strategies in irrigated agriculture in Asia’’ by Hussain (2005) shows that, in 26 major and medium-size canal irrigation schemes in Asia, irrigated areas average 20% lower poverty than adjacent rainfed areas; gains are more with pro-poor management of water for farming (PPMWF) and where distribution of farmland or farm water is more equal. These findings, an...
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