نتایج جستجو برای: bakhtiari province to identify environmental parameters affecting thevegetation cover
تعداد نتایج: 10872394 فیلتر نتایج به سال:
Erosion is a surface-leveling phenomenon where thetransportof sediments from being washed off the land or by the force of gravity move from elevated areas. During different periods, in Iran, constantly flowing water has been affected by erosion. Thus it is important to address the erosionproblem. This research attempts to assess and identify the parameters affecting erosion in Haji Abad Wa...
This study investigated the influence of site conditions on physical and morphological properties hawthorn (Crataegus azarolus L.) wood grown in Zagros forests Iran. Hawthorn is a valuable woody species Iran’s with data deficiency its properties. To our best knowledge, there no wood. Twenty-seven mature trees were randomly chosen sampled at three altitude levels (1 800–2 000, 2 000–2 200, 200–2...
The aim of this study was to identify the most significant stand parameters affecting net forest precipitation and interception loss in Scots pine stands and to develop multiple linear regression models (MLR) that can be used for practical purposes to predict net forest precipitation and interception rates in northern Germany using forest inventory data and gross precipitation. In the model, th...
Vegetation is the most important factor influencing the sustainability of rangeland ecosystems. Therefore, it is important to understand the environmental factors and their effect on vegetation and restoration of rangeland ecosystems. The aim of this study was to identify factors influencing on Gundelia tournefortii L. distribution. Accordingly, the information of Gundelia tournefortii L. was d...
Free and uncontrolled pasture grazing by animals may decrease soil aggregate stability through reductions in plant cover and subsequent soil organic C, and trampling. This could expose the soil surface layer to degradation and erosion. The objective of this study was to determine the influence of pasture management (free grazing, controlled grazing and long-term non-grazing regimes) on aggregat...
Background and Aim: The World Health Organization (WHO) has placed special emphasis on the protection of families against the costs of health services. Patients suffer not only from the burden of a disease, but also from the burden of their health costs. The aim of this study was to estimate out-of-pocket costs and to identify the factors that affect catastrophic expenditures among patients wit...
mangrove trees occur along the coastal areas of bushehr province, south iran and these plants have been used in traditional medicine and fodder for centuries. heavy metals are known to pose a potential threat to terrestrial and aquatic biota. however, little is known on the levels of heavy metals found in mangrove in iran. to understand levels of heavy metals and identified heavy metal source, ...
Introduction: The Coronavirus has crossed geographical borders. This study was performed to rank and cluster Iranian provinces based on coronavirus disease (COVID-19) recorded cases from February 19 to March 22, 2020. Materials and Methods: This cross-sectional study was conducted in 31 provinces of Iran using the daily number of confirmed cases. Cumulative Frequency (CF) and Adjusted CF (ACF)...
Environmental Parameters Affecting Dark Response of Rice Seedlings (Oryza sativa L.) to Triacontanol
The Caspian lamprey (Caspiomyzon wagneri) is one of the most important ecological and native fish species of the Caspian Sea basin. The present study was conducted to identify the factors affecting the population decline of this species in Shiroud River as one of the important habitats of fish in the southern basin of the Caspian Sea. For this purpose, three stations were selected for sampling ...
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