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Assessment of drainage system standards of forest roads in iran using GIS

100%

Eskandari S. , Hosseini S. A.

Polish Journal of Environmental Studies

2013

tom 22

nr 3

Forest roads should be constructed according to standards and particular attention needs to be given to forest roads in planning and management schemes to develop sustainable forest infrastructure. The creation of standards for drainage systems is one of the most important technical developments in forest road construction. Seri 1 of Darabkola forest has been located in the central part of the northern Alborz Mountains in basin 74 and in 15-kilometer distance of Sari in Iran and covers an area of 2,612 hectares. In this research slope and aspect maps of the Seri 1 of Darabkola forest were prepared using Arcview 3.1 and ArcGIS 9.1 to evaluate drainage. In addition, factors effecting road drainage were measured and evaluated: road width, cross and longitudinal slopes of roads, ranges of excavation and embankment slopes, longitudinal slope of ditches, and basal area of ditches at intervals of 1.5 kilometers of forest road and for each 40 meters of each section. Sample points of locations were taken using global positioning system (GPS) and a related map was prepared. Measurements of culverts were taken for diameter and distances apart from each other in the existing drainage system as well as locations that were also recorded using GPS. In addition, road routes were tracked and recorded using GPS to obtain the desired accuracy. Finally, the drainage system of the forest road was compared to the accepted standards. Results showed that there was significant difference between the current drainage system of Seri 1 of Darabkola forest roads and accepted standards, but in some cases evaluation of the existing drainage systems on these roads demonstrated that they were in accordance with accepted standards.

The effects of foliar-applied manganese on major cell wall polysaccharide fractions and soluble sugar composition of cucumber leaves

100%

Eskandari S. , Gineau E.

Acta Physiologiae Plantarum

2020

tom 42

nr 09

Prediction of future forest fires using the MCDM method

80%

Eskandari S. , Ghadikolaei J. O. , Jalilvand H. , Saradjian M. R.

Polish Journal of Environmental Studies

2015

tom 24

nr 5

Evaluation of the MODIS fire-detection product in Neka-Zalemroud fire-prone forests in Northern Iran

80%

Eskandari S. , Ghadikolaei J. O. , Jalilvand H. , Saradjian M. R.

Polish Journal of Environmental Studies

2015

tom 24

nr 5

A study on heavy metals mobility from zinc plant residues in Iran

80%

Moradkhani D. , Eskandari S. , Sedaghat B. , Najafabadi M. R.

Physicochemical Problems of Mineral Processing

2013

tom Vol. 49, iss. 2

567--574

The transport of heavy metals from mining disposal site to groundwater and surface water is one of the most serious environmental problems in the world. The transport of heavy metals such as Zn, Cd and Mn from leaching filter cake in RECo, Zanjan, Iran was examined by using column leaching. Parameters studied included: flow rate, pH of input solution and leaching time. In this study, the maximum dissolution percents of Zn, Cd and Mn in input solution pH of 5 were 45.50 %, 53.97% and 19.94%, respectively. To statistically analysis the experimental results, SPSS14 software was employed. The results of SPSS 14 indicated that for the Zn, Cd and Mn dissolution, time and flow rate were found respectively, the effective parameters for the pollution in zinc leach residues.