non-consolidation and dispersion of agricultural lands is considered as one of the serious barriers against agricultural development. small-size farms along with their being dispersed hinders the efficient use of water, land, labor, mechanization and other factors effective in agricultural production. the main purpose followed in this article is to study the attitude of farmers towards land int...

in order to improve irrigation water productivity (wp) at rice production, a field experiment was conducted at shahid fozveh research station (esfahan region) during 2001-2003. experiment was arranged in a split plot design (rcbd) with three replications. the treatments were: three levels of irrigation managements including i1: permanent flooding under 3.5cm water during growth period, i2:perma...

Due to lack of confidence, the process of decision making and planning is a difficult task. Various tools are available to help decision-makers and planners as well as risk management methods for prediction and planning. Being aware of the period and intensity of a phenomenon is the keystone of dealing with critical events in risk management, knowing that the relationships among involved factor...

some biological characteristics of broodstock and juvenile kutum, rutilus kutum. were investigated using data collected from the estuaries of tajen and shirood rivers (tr and sr) (southern caspian sea basin) as well as from the caspian sea in 2012. the results showed higher condition factors (cf) in the male broodstocks kutum than those estimated in the female broodstock of both tr and sr. the ...

A large amount of accurate river cross-section data is indispensable for predicting river stages. However, the measured river cross-section data are usually sparse in the transverse direction at each cross-section as well as in the longitudinal direction along the river channel. This study presents three algorithms to resample the river cross-section data points in both the transverse and longi...

OBJECTIVES To examine nonylphenol (NP) and 4-t-octylphenol (OP) concentrations and general water quality indicators along a river in the greater Tokyo area and to specify the distribution and origin of alkylphenols. METHODS Water was sampled from the Edogawa River, a main river in the greater Tokyo area, which is a source of public drinking water; and the Sakagawa River system, a tributary of...

Karun River is the largest and most watery river in Iran. This river is the longest river which located just inside Iran and Ahvaz Metropolis drinking water supplied from Karun River as well (fa.alalam.ir). Karun River as the main source of water treatment plants in Ahvaz, like most surface waters affected by various contaminants which caused changes in water quality of the river (www.aww.co.ir...

The study mainly aims at looking into the disparities in beneficiary’s socio-economic status between areas without implementation of forestry plans and where had initially been available even though they have recently terminated as well. Babol Roud plan is located Lafoor forest area County, Mazandaran Province, Northeast Iran. This research was divided three steps: first all, by making use Coch...