نتایج جستجو برای: monthly water balance
تعداد نتایج: 707130 فیلتر نتایج به سال:
Evapotranspiration (ET) accounts for a substantial amount of the water flux in the arid and semi-arid regions of the World. Accurate estimation of ET has been a challenge for hydrologists, mainly because of the spatiotemporal variability of the environmental and physical parameters governing the latent heat flux. In addition, most available ET models depend on intensive meteorological informati...
BACKGROUND The knowledge concerning balance training actually lowering fall rates among frail older persons is limited. OBJECTIVE The aim of this study was to examine the effects of a 4-week individualized visual feedback-based balance training on the fall incidence during 1-year follow-up among frail older women living in residential care. METHODS Twenty-seven older women from 2 residentia...
Accurately quantifying evapotranspiration (ET) is essential for modelling regional-scale ecosystem water balances. This study assembled an ET data set estimated from eddy flux and sapflow measurements for 13 ecosystems across a large climatic and management gradient from the United States, China, and Australia. Our objectives were to determine the relationships among monthly measured actual ET ...
In recent years, water shortage is becoming one of the most serious problems in the Poyang Lake. In this paper, the long-term water balance items of the Poyang Lake have been analyzed to reveal the coupling effects of Three Gorges Dam (TGD) and droughts on the water balance of Poyang Lake. The results indicate that: (1) the water balance items of Poyang Lake vary greatly, e.g. lake precipitatio...
A long series of runoff data is the basis for water conservancy project planning, resource management, and so on. When in short supply, it needs to be extended reconstructed. Taking Zhiyan Reservoir Qiantanglong Lanxi City as research objects, based on Water balance model with double parameters (WBM-DP) Quantile Mapping (QM) methods, monthly income two reservoirs 59 years from 1960 2018 was ana...
The most compelling, yet unexplained, evidence for the coupled partitioning of water and energy by terrain and vegetation is the nonlinear relationship between drainage density, defined as total stream channel length per unit area, and a measure of surplus water in the landscape (Figure 1). In this classic example, the measure of surplus water is the sum, over 12 months, of ten times the mean m...
A watershed hydrological model, hydrological simulation program-Fortran (HSPF), was applied to simulate the spatial and temporal variation of hydrological processes in the Jiaoyi watershed of Huaihe River Basin, the heaviest shortage of water resources and polluted area in China. The model was calibrated using the years 2001-2004 and validated with data from 2005 to 2006. Calibration and valida...
Abstract The negative balance of water reserves and reduce the size of static storage aquifers including the effects of the drought phenomenon is repeated on the status of surface and groundwater resources in Iran including Khuzestan province has had an impact. In this study, using fuzzy and ArcGIS version also better understand the effects created in the statistical period on the aquifer Gotv...
A Water Footprint Assessment is carried out for Morocco, mapping the water footprint of different activities at river basin and monthly scale, distinguishing between surface- and groundwater. The paper aims to demonstrate the added value of detailed analysis of the human water footprint within a country and thorough assessment of the virtual water flows leaving and entering a country for formul...
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