جستجوی مقالات مرتبط با کلیدواژه "تالابها" در نشریات گروه "جغرافیا"

Lakes and ponds are considered as one of the signicant beauties of creation، the most advantageous and of the most vulnerable natural ecosystems in the World at the same time. These Vital and varied environments are of life rules that merely have no replacement: how ever، none of worlds ecosystems havae experienced harms due to environmental Jeopardies، superficial activites، short-sighted and selfish desires of man kind as much as ponds have. This study is aimed to investigate effects of oromiye lake level of water on agricultural economy of villages in Marhamat abad shomali of Miyandoab township. Kind of research is applied one، Method of research is descriptive and analytical، Method of collecting literature and at- firld information and analysis of information has been with factor – analysis and in the method of analyzing of the research were harvesting agriculturals of Marhamat abad shomali county based an a qeneral agricultural census in 1382، harvesting agriculturals in this county in this yrar were 1437 which 264 agriculturals of them were selected by kokran equation as the sample volume. Findings of the research illustrate that with water level decrease in oromiye lake and blowing of storm and strong winds، salt get transferred to agricultural fields and causes reduction of planted fields production decrease، some salted fields، decrease of under ground waters، destruction of some fruit trees and at the end leads to decreased eagerness in agricultural activities. In addition the increased cost in the usage of agricultural devices، unavailability of modern methods of production due to lack of knowledge، shortage of income، etc has lead to decrease of employment in agriculture field in the county.