abstract the objective of current research is to investigate distribution patterns of vegetation types and its relation with environmental factors in southern margin of haj aligholi kavir of damghan. three vegetation types including halecnemum strobilaceum, sedlitzia rosmarinus and artemisia sieberi were studied in marginal arid regions and uplands of the study area. firstly, geographic locatio...

the effect of fire was investigated on some soil chemical properties of forest area of baghe shadi herat- yazd province. to perform the experiment, 18 profiles of soil in control area and 7 profiles from each of burned areas were dug and samples of two depth (0-15 and 15-30) in total of 64 samples were collected. results showed effect of the area was significant in organic matter and carbon per...

the purpose of this research was to investigate the relationship between vegetation cover and soil characteristics in order to determine the most important soil factors which affect on quantitative variations and types of vegetation cover in the study area. the study area is located in west of tehran province and southeast of hashtgerd, next to najm-abad village. after field studies, the index ...

background: the objective of the present research was to determine the frequency of toxocara spp. eggs in soil samples of public parks, in the city of tehran, iran. methods: a total of 600 soil samples were taken from 120 parks between aprils to november, 2008. soil samples were collected from 5 distinct sites in the parks. the samples were washed with saline solution and the collected sediment...

Plant diversity and vegetation distribution in an area are related to the soil physical and chemical properties. The knowledge of relationships between species diversityand soil parameteris essential for sustainable ecosystem management. This study was conducted to investigate the relationships between soil factors and species diversity indices in the protected rangelands of Lashgardar, Malayer...