One of the influential tools concerning the rangeland and vegetation sciences is the technology of remote sensing and satellite data. Satellite data have played essential roles in preparing the needed information for studying the vegetation. Vegetation has been widely recognized as one of the best indicators for determining the land conditions. Using vegetation indices is […]
Subalpine rangeland as a rara avis ecosystem is very important because of ecological features. Consistency and resistance of this ecosystem is so frangible and its natural equilibrium is instable due to the effects of biotic and abiotic factors. The landslide as one of negative consequences in upland area is seen in Masoleh watershed (north of […]
The major aim of processing satellite images is to prepare topical and effective maps. The selection of appropriate classification methods plays an important role. Among various methods existing for image classification, artificial neural network method is of high accuracy. In present study, TM images of 1987, and ETM+ images of 2000 and 2006 were analyzed […]
Soil erosion is a serious problem especially in northern parts of Iran. One the most important side effects on soil erosion may be the decline in qualities of soil refers to agricultural productivity. So it is very important to assess the soil erosion risk for the sustainable development of agriculture. This study outlines ways undertaken […]
Rangelands are important for plant productivity, livestock production, wildlife, conservation of soil and water resources, and etc. One of the main problem of rangeland is that has not been used based on its potential that leads to more degradation of rangelands. The purpose of this study was to evaluate the range management capability of Badreh […]
Rangeland health assessment provides qualitative information on ecosystem attributes. We examined changes in rangeland health in the Zagros semi-arid rangelands of Iran at fixed sites between 2001 and 2011, over the 10-year period. The rangeland fragments significantly declines in the quality of the vegetation, and changes in plant species were driven largely by seasonality, and […]
Biological invasions form a major threat to the provision of ecosystems products and services and can affect ecosystems across a wide spectrum of bioclimatic conditions. Therefore, it is important to systematically monitor the spread of species over broad regions. It has long been recognized that remote sensing and geographical information system could contribute to this […]
This research was conducted to investigate the relationships between soil (organic matter, potassium, phosphorous, sodium, fine gravel, soil texture, EC, lime, gypsum, nitrogen) and environmental (elevation, slope) factors with distribution of vegetation types in rangelands of Sabzdasht, located in Bafgh, Yazd province at 2012. For this purpose, four vegetation types were selected as follows: Artemisia […]
Recognizing the herbaceous plant species diversity could use as an important indicator applied for the rangeland and forests management. Considering the presence of vegetation and animal husbandry in Zagros region, Iran, being aware of the diversity and richness of plant species is necessary to management or the destructed vegetation restoration. In order to study the […]
Medicago spp. is the most important forage crop in many regions of the world. Annual medics have distinct advantages over perennial Medicago. These species have faster growth rate in cultivation year, higher crude protein percentage, tolerance to pests and more vigorous seedlings. Morphological and physical aspects of pod and seeds of annual medics play a […]
