نتایج جستجو برای: plant species
تعداد نتایج: 871061 فیلتر نتایج به سال:
Identification of vegetation and study of geographical distribution of plants in each region is the basis of ecological studies and researches in that area. The purpose of this study was to introduce the flora, life form and geographical distribution of plants in the desert area in the southern of Damghan desert. At first, plant species of this region were collected and identified using availab...
In arid and semi-arid rangelands, grazing as one of the natural or human induced processes has direct and indirect effects on structure and dynamics of plant community and ecosystems. A study was done to analyze the effects of grazing on plant species diversity and Plant Functional Types‘ (PFTs) diversity of arid and semi-arid rangelands. We analyzed plant richness and diversity data from 75 sa...
The effects of vegetation on wind erosion, especially in arid areas, are known, but few studies have assessed the quantitative impact of plant species. The aim of this study was to investigate the effects of plant species on wind erosion and deposits. Three experimental sites were selected in Sebri, Iran. Two sites contained two plant species, Launaea spinosa and Lactuca serriola of different s...
The aim of this research was to identify the plant species, introducing the flora and plant geographical distribution of Chaghalvandi area, Lorestan Province. This area, with 2000 hectares, is situated in the north of Lorestan Province, where the amount of annual precipitation is 481.79 mm and mean annual temperature is 15.32°C. Plant samples were collected from different parts of the area betw...
Plant species distribution, composition and diversity in deserts of arid and semi-arid areas, especially saltland; depend on soil physical and chemical gradients. The aim of this research was to investigate changes in the plant species diversity and richness along a soil salinity gradient in the margin rangelands of Petregan Playa. After vegetation zoning in relation to soil salinity, random-sy...
Conservation of vegetation is one of most important tools for conservation of soil and decreasing erosion. Therefore, knowledge about vegetation characteristics, such as diversity, is the first and most important biological tools for soil conservation. One of the methods in which we can collect useful data about plant diversity, is additive partitioning. In the current study, plant species dive...
Taleghan has a suitable ecological condition for growth of diverse plants. There are many species that are used in folk medicine by inhabitants for the treatment of infection diseases but there further information is required. For this study, approximately 200 species were collected and identified at the Herbarium, school of pharmacy, Tehran University of medical sciences (THE). Pre-Phytochemic...
Taleghan has a suitable ecological condition for growth of diverse plants. There are many species that are used in folk medicine by inhabitants for the treatment of infection diseases but there further information is required. For this study, approximately 200 species were collected and identified at the Herbarium, school of pharmacy, Tehran University of medical sciences (THE). Pre-Phytochemic...
Mapungubwe Cultural Landscape (MCL) woody vegetation was characterized to establish structural and compositional attributes. Stratified random sampling based on major soil types was used and nine plant variables were measured in 137(20x30) m2 sampling plots; these being genera, species and family names; basal circumference; plant height; depth and diameter of tree canopy; number of s...
all steps of a mining project generally disturb the environment'soriginal condition during construction. therefore, it is crucial toimplement an appropriate mine reclamation plan throughout all mineplanning stages from sustainable and environmental point of view.planting the suitable plant species in each step of any reclamationplan and each area is one of the necessities in this respect.select...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید