crataegus as a woody multipurpose species based on fruit production is very important for local residents in the northern zagros forests located at the south of west azerbaijan province. this study aimed at determining the quantitative characteristics, soil and physiographic properties in the crataegus spp. stands. in current study, eight crataegus habitats were selected and 3-5 0.1 ha circular...

Acacia seyal is one of the multipurpose parkland agroforestry tree species in eastern and southern Africa. It a common on-farm Rift Valley Ethiopia, but information limited on its effect soil properties sorghum growth yield. The study was conducted to evaluate selected yield Guba Lafto district northern Ethiopia. Six isolated closely comparable trees growing farms were purposely selected, plots...

Soil organic carbon (SOC) reflects soil quality and plays a critical role in soil protection, food safety, and global climate changes. This study involved grid sampling at different depths (6 layers) between 0 and 100 cm in a catchment. A total of 1282 soil samples were collected from 215 plots over 8.27 km(2). A combination of conventional analytical methods and geostatistical methods were use...

Our researches have been made on brown forest soil that had been used in long-term experiments set up according to specified fertilization system for over 30 years. We have chosen those experiment variants in which quantities of nitrogen fertilizers were gradually increased. The soil samples taken from 0 cm to 30 cm depth were used to determine biological indexes of nitrogen availability (aerob...

risk assessment of soil erosion, one of the most important land degradation problems worldwide, is very essential for land and water resources management, and development of soil conservation methods. in the present study, the temporal changes of soil erosion risk were assessed from 1987 to 2010, based on the revised universal soil loss equation (rusle) using remote sensing (rs) and geographic ...

Method of Investigation Two hundred blood samples were taken, 185 of these being from a scalp vein, 13 from other veins (external jugular, antecubital or femoral), and in two instances heel-prick specimens were used. About 0 5 ml. of blood was withdrawn into a well-fitting sterile 2 ml. all-glass syringe and placed at once in a tube containing a small quantity of dry heparin. After mixing 20 c....

abstract the availability of heavy metals in the soil is related to their partitioning between solution and solid phases and expressed by sorption isotherm. twenty surface soil samples (0-30 cm) belonging to five soil subgroups were taken from agricultural regions of western azerbaijan province. the sorption isotherms of pb were determined by equlibrating the soil with solutions containing 0, 1...

one of the ordinary methods to protect, rehabilitate, and enhance an ecosystemfunction in arid and semi-arid areas of the world is sand dune stabilization using biologicalpractices. plantation of species on the soil plays a great role in sustainable management ofthe ecosystem. this research studies the effects of cultivation of haloxylon ammodendronand atriplex canescens on physical-chemical ch...