نتایج جستجو برای: annual average of precipitation
تعداد نتایج: 21179088 فیلتر نتایج به سال:
The aim of the present study was to evaluate the spatial and temporal changes of NPP in different biomes of Isfahan province from 2000 to 2014 and their response to climatic factors. For this purpose, the NPP data of the MODIS satellite were collected and the map of climatic variables was produced using various interpolation methods. The investigation of the spatial and temporal variations of N...
In this study, the ability of spatially distributed hydrological WetSpa model for simulation of suspended sediment concentration in a daily time step was investigated. Hydro-climate daily data for a period of 7 years including: precipitation, temperature, evaporation, discharge and suspended sediment and three basic basic digital maps of DEM, soil texture and land use, with the cell size of 25 ...
This paper explores flora of Rudbar Alamut region in NE of Ghazvin province situated in the south slope of central Alborz Chain Mountains. Alamut is divided into two parts, upper Alamut and lower Alamut. The minimum height in the region is 1265 m, located in Shahrak village, while the maximum height is 4175 m, located in Siahlan Mountain. Average of annual precipitation is 368.3 mm and annual a...
BACKGROUND AND AIMS Little is known about health impacts of climate in pre-industrial societies. We used historical data to investigate the association of temperature and precipitation with total and age-specific mortality in Skellefteå, northern Sweden, between 1749 and 1859. METHODS We retrieved digitized aggregated population data of the Skellefteå parish, and monthly temperature and preci...
The relationship between physiological traits and fitness often depends on environmental conditions. In variable environments, different species may be favored through time, which can influence both the nature of trait evolution and the ecological dynamics underlying community composition. To determine how fluctuating environmental conditions favor species with different physiological traits ov...
Introduction: Drought, as a natural disaster, has a major impact on agriculture and ecosystem of the affected region. Droughts occur mainly in areas like Iran being located in the world dry belt, with below normal levels of rainfall. There is a need to study and predict the drought situation because, according to statistics, Iran is among the most water-stressed countries, with serious probl...
Water use efficiency (WUE) reflects the coupling of the carbon and water cycles and is an effective integral trait for assessing the responses of vegetated ecosystems to climate change. In this study, field experiments were performed to examine leaf WUE (WUEleaf) in response to changes in CO2 concentration and other environmental variables, including soil moisture and air temperature. We al...
Data for this study were collected via questionnaire and interview with families of patients and checking their medical folders. This study was based on cost-benefit analysis technique and the dependant variables included cost, benefit (the economic consequences of increasing working hours for patients and decreasing patient and family-centered care), outpatient visits and hospitalization days....
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