نتایج جستجو برای: agriculture and natural resources
تعداد نتایج: 16909371 فیلتر نتایج به سال:
Protecting water resources from nitrate-nitrogen (NO3-N) contamination is an important public health concern and a major national environmental issue in China. Loss of NO3-N in soils due to leaching is not only one of the most important problems in agriculture farming, but is also the main factor causing nitrogen pollution in aquatic environments. Three typical intensive agriculture farmlands i...
the level of in job satisfaction of the experts engaged in college of agriculture, and natural resources of tehran university was the purpose followed in this study. statistical population of the research included all the experts, a number of 123 members in the university college. questionnaires were sent to all the participants picked up by means of census method. ninety eight participants had...
The unavoidable consequences of increased demand and decreasing water resources and Deduction rainfall and drought is caused to arise disutes among water user in recent years. On the other hand, vital need of agriculture sector to water and developing industry sector in Isfahan, have increased competition between water users of industry sector and agriculture sector. In this paper, we use...
in the current turbulent environment, sustainable organizational success cannot be achieved without considering organizational learning. due to the global pressures, higher education institutions including agriculture colleges should turn to learning organizations to face the challenges ahead. hence, the purpose of this descriptive correlational study is to investigate organizational learning a...
China is at a critical stage of transformation from traditional to modern agriculture and its agriculture and rural economic sector faces severe challenges of shortage of natural resources, environmental degradation, agricultural disasters, sluggish income growth of farmers and widening disparity between urban and rural areas. The fundamental solution to these problems lies with the advancement...
Outsiders often oversimplify Amazon soil use by assuming that abundantly available natural soils are poorly suited to agriculture and that sporadic anthropogenic soils are agriculturally productive. Local perceptions about the potentials and limitations of soils probably differ, but information on these perceptions is scarce. We therefore examined how four indigenous communities in the Middle C...
Wind erosion is one of the natural disasters in the arid regions of central Iran is increasingly faced by mismanagement of natural resources in the rise of this phenomenon has had a large impact. Precipitation, temperature and wind are the most important climatic factors that affect this phenomenon. Lack of rainfall, temperature increased and wind speed increased evapotranspiration in the regio...
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