نتایج جستجو برای: soil salinization
تعداد نتایج: 181234 فیلتر نتایج به سال:
The climate of the Qinghai–Tibet Plateau is distinct. Given large temperature difference between day and night, drought in perennial years, low rainfall evaporation volume, frozen soil some areas will occur salt. presence salt changes water thermal characteristics soil, which affect its activity layer. In this paper, Beiluhe area was selected as research object, numerical calculation model wate...
soil salinization is a process in which the accumulation of soluble salts in soil profile can affect soil physical and chemical properties, such as osmotic pressure, permeability and hydraulic conductivity. these, in turn, can seriously impair or completely stop the growth of plants. in this study, four theoretical models for predicting soil leaching contains including series of reservoirs mod...
Land salinization is threatened with secondary salinization recently because of unreasonable exploitation of natural resources and global change. However, previous assessments cannot obtain comprehensive and spatial explicit statistics and impede to develop ecologically sound policies for government. This study tries to confront these difficulties and identify key anthropogenic determinants, th...
background and objectives: primary and secondary soil salinity is one of the main reasons of land degradation and desertification in arid and semi-arid zones. change detection of salt-affected soils, aides finding salt distribution and salinization trends. present study was arranged for monitoring soil salinity status of agricultural lands located on southern part of bakhtegan lake in fars prov...
Plant growth and yields are decreased by salinity, drought and other environmental stress conditions. Soil salinization is one of man’s oldest environmental disasters. The historic records show that many human civilizations declined because of the destruction of crop production by salinization of arable lands. Recent estimates suggest that about 20-25% of the world’s irrigated land is destroyed...
Astragalus membranaceus Bge. var. mongholicus (Bge.) Hsiao (A. mongholicus, family Leguminosae) is one of the most important traditional Chinese herbs because it contains lots of bioactive metabolites, which have beneficial and pharmacological effects on health. Simultaneously, it has been proved to be a salt-tolerant plant-one of the potential species to control the soil salinization. Therefor...
Information based agriculture (IBA) includes matching of agronomic practices with soil and water characteristics and their spatial variability for enhancing productivity. An attempt was made to derive agriculture management zones based on soil and water characteristics for sustainable agricultural production in Mansa district (Punjab, India). Based on physiographic analysis and semi detailed so...
The use of reclaimed wastewater in agriculture can be a solution for regions with water shortages or low rainfall periods; besides fulfilling the crop's water needs, it would also promote the recycle of nutrients. However, care should be taken regarding soil salinization, especially in closed environments such as greenhouses for the cultivation of ornamental plants. The domestic effluents are r...
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