palynological analyses from exposed palaeolacustrine deposits located at the flanks of damavand volcano, in the central alborzmountains in northern iran, provide a broad idea of the temporal variation of vegetation according to climate changes during a rangeof limited time intervals during the quaternary period. this research reveals that the regional vegetation of the study area had been asemi...

................................................................................................................................................... ii Preface...................................................................................................................................................... 1 Background ..............................................................................

Vegetation deterioration is a main cause of erosion and land degradation. Therefore, land cover reclamation in the effected areas will affect erosion trend. In reclamation projects, the investigation of relationship between the planted species and soils is highly recommended. Atriplex species can sequester carbon into soil, and have an ability to conserve soil and prevent soil erosion,...

Vegetation deterioration is a main cause of erosion and land degradation. Therefore, land cover reclamation in the effected areas will affect erosion trend. In reclamation projects, the investigation of relationship between the planted species and soils is highly recommended. Atriplex species can sequester carbon into soil, and have an ability to conserve soil and prevent soil erosion,...

more than two third of the world lands are located in arid and semi arid area including iran. unfortunately there is lack of information and consequently poor scientific studies in these areas because of the difficulties which we face for collecting data and doing field studies in such a big areas under hard situations. however, in the recent decades there has been a great progress in using rem...

This study evaluated the freshwater use of two mangrove species (R. mucronate: Rhizophora mucronata and A. marina: Avicennia marina) growing in a coastal area Djibouti City on Moucha Island Djibouti. We accomplished this by comparing hydrogen oxygen stable isotope ratios (δ2H δ18O) body water with those creek water, soil groundwater, rainwater samples. Line-conditioned excess (lc-excess) was ca...

a r t i c l e i n f o Groundwater is considered as the most important natural resources in arid and semi-arid regions. In this study, the application of random forest (RF) and maximum entropy (ME) models for groundwater potential mapping is investigated at Mehran Region, Iran. Although the RF and ME models have been applied widely to environmental and ecological modeling, their applicability to...