نتایج جستجو برای: soil salinization
تعداد نتایج: 181234 فیلتر نتایج به سال:
Grassland salinization causes considerable changes to soil and vegetation, which can lead to changes in soil organic carbon (C) and total nitrogen (N). These changes have complex causal relationships. A significant correlation between soil organic C and total N and any soil or vegetation property does not necessarily imply a significant direct effect of the property on soil organic C and total ...
A model of irrigation agriculture is applied to southern Mesopotamian for the areas around Nippur and Uruk. Field systems around late third millennium BC (Ur III period) cities are modeled in order to understand the effects of salinization and what strategies might limit progressive salinization that hinders agricultural yields. Scholars have long suspected that progressive salinization may con...
Salinization of soil is primarily caused by capillary rise from saline shallow groundwater orapplication of saline irrigation water. In this investigation, the transient state analytical modelwas modified to predict water uptake from saline shallow groundwater, actual cropevapotranspiration, soil water content, dry matter, seed yield and soil salinity under differentsaline groundwater depths, i...
315 variants of halotolerant bacteria were isolated from soil samples taken around Starobin potash deposit mined by Belaruskali concern. Nitrogen-fixing isolate CA-6 and phosphate-solubilizing Cp-1 capable to withstand abiotic stress caused sodium chloride in concentration 1710 2565 mM, respectively water deficiency characterized osmotic potential -0.20 -0.42 MPa sorted out. Isolate may dissolv...
The agro-hydrological Soil–Water–Atmosphere–Plant (SWAP) model was calibrated and validated to simulate water–salt transport based on field experiments in an arid region of China. The simulation results show lower soil water content but higher salt concentration under deficit irrigation. Soil water and salinity below 95 cm at 80% evapotranspiration (ETc ) treatments and 65 cm at 60% ETc treatme...
desertification relates to the both the process and end state of drylands degradation. salinization and alkalinization are two indicators of soil degradation in arid and semi-arid regions. the main objectives of this research is monitoring of soil salinity using high spectral and spatial resolution of remote sensing to assess desertification in the marvast plain, yazd province. two images of te...
In order to discover the advantages and disadvantages of different fertilization regimes and identify the best management practice of fertilization in greenhouse fields, soil enzyme activities involved in carbon (C) transformations, soil chemical characteristics, and crop yields were monitored after long-term (20-year) fertilization regimes, including no fertilizer (CK), 300 kg N ha-1 and 600 k...
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