Open AccessMODELING OF A WATER-SALT BALANCE OF A RIVER POOL WITH DEVELOPED IRRIGATED AGRICULTURE
Author(s) -
G. Kh. Ismaiylov,
N.V. Muraschenkova
Publication year - 2020
Publication title -
èkologiâ. èkonomika. informatika. tom 1: sistemnyj analiz i modelirovanie èkonomičeskih i èkologičeskih sistem
Language(s) - English
Resource type - Journals
ISSN - 2500-395X
DOI - 10.23885/2500-395x-2020-1-5-65-70
Subject(s) - groundwater , aeration , water balance , inflow , hydrology (agriculture) , outflow , environmental science , tributary , water table , irrigation , surface water , moisture , precipitation , geology , environmental engineering , agronomy , chemistry , geography , geotechnical engineering , oceanography , cartography , biology , organic chemistry , meteorology
The construction of a mathematical model of the water-salt balance for river basins with the predominant development of irrigated agriculture is considered. The structures of the water and salt balance of the irrigated territory and the balance of the main river bed within it are given. It has been established that if the inflow and outflow of water and salts dissolved in it are caused by its horizontal flows, then the evaporation and accumulation of water (salts) in the aeration zone and groundwater are caused by its vertical flows.This leads to the need to consider instead of the general equation of the water (salt) balance of the irrigated territory of its modifications for the distinguished three vertical zones, that is, “the surface of the territory – aeration zone – groundwater zone”. During the operation of the algorithm, the following are successively determined: elements of the water and salt balance of the irrigated territory and the riverbed; groundwater level as a result of the intake of salts with in-person flow of local tributaries; filtration losses from the channels and the lateral residue of the inflow; moisture content in the aeration zone after irrigation water and precipitation enters it; groundwater level after water from the aeration zone; moisture content in the aeration zone after the influx of groundwater into it; the outflow of groundwater into the riverbed and the final mineralization of water in the aeration zone.