نتایج جستجو برای: soil and water resources and agricultural land use renewable

تعداد نتایج: 17166613  

Delfani-goudarzi, Fatemeh, Ghanavati, Ezatallah,

It is being argued that there will exist high reliance upon agriculture lands and resources as a provider of food for population in coming decades. The increase in urban land, industrial and residential land uses at the expenses of agricultural lands is among the major consequences of population increase. However, the utilization of soil, water, forest and pasture are geared toward extensive an...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم انسانی 1390

iv abstract this study examined the linguistic behaviors of two iranian efl teachers each of them teaching learners of two similar proficiency levels, a beginner level and an intermediate level, to investigate the relationship between the learners proficiency levels and the amounts and purposes for l1 use by the two teachers. the study was carried out to investigate whether there were differe...

alavvi-panah, kazem, ekhtesasi, mohammad reza, masih-abadi, mohammad hosein, morovvati sharif abadi, abolfazl, pazira, ebrahim,

In this study the effects of land use change from salt affected land to cropland on soil quality indicators were studied in Chahafzal region, Yazd province, central Iran. Composite soil samples from 0-30 and 30-60 cm depths of saline and cultivated land were taken. Soil particle size distribution, calcium carbonate, Available water capacity (AWC), Electrical conductivity (ECe), Soil reaction (p...

حیدری, مسلم, زنگی آبادی, مریم, هنربخش, افشین, پژوهش, مهدی,

 In recent years, deferent methods for determination of optimal pattern of using water and soil resources have been applied. Due to importance of natural resources, watershed management through land use modification and correct application of land is necessary. However, single objective linear programming is not an efficient method in this matter. In this study, multi objective method of goal p...

Journal: :اکو هیدرولوژی 0
فاطمه رجایی دانشجوی دکتری، دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس، نور عباس اسماعیلی ساری استاد، دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس، نور عبدالرسول سلمان ماهینی دانشیار، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان مجید دلاور استادیار، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس، تهران علیرضا مساح بوانی دانشیار، پردیس ابوریحان، دانشگاه تهران، تهران

non-point pollution are an important factor in determining water quality and eutrophication of fresh water. the principle causes of this issue is high concentrations of nutrients in the water especially nitrogen and phosphorus. change of land use particularly affected on water nitrate load. therefore, understanding the correlations between land use and nitrate pollutant is a priority in order t...

2004
A. Gobin R. Jones M. Kirkby P. Campling G. Govers C. Kosmas

Soil erosion forms a major threat to European soil resources. Although soil is a vital and largely non-renewable resource, it has not been the subject of comprehensive EU action so far. A thematic strategy for soil protection, which recognises soil erosion as one of the major threats, has currently been placed high on Europe’s political Agenda. Assessing and monitoring soil erosion is needed to...

Journal: :پژوهش های حفاظت آب و خاک 0

changes in land use can significantly influence the hydrological cycle and hence affect water resources. understanding the impacts of land use changes on hydrology response at the watershed scale can facilitate development of sustainable water resources strategies. this paper investigates the hydrological effects of land use change in the zanjanroodbasinofiran, during last 40 years. the study r...

Journal: :desert 0
s. amini department of geography, najafabad branch, islamic azad university, najafabad, isfahan, iran a. gandomkar department of geography, najafabad branch, islamic azad university, najafabad, isfahan, iran m. bagheri bodaghabadi department of soil science, soil and water research institute (swri), karaj, iran and department of geography, najafabad branch, islamic azad university, najafabad, isfahan, iran

there are various methods and models for land evaluation. these methods are classified according to the number of used resources. the best resources capabilities or potentials and land use can be found by analyzing one of the main resources, in the lands close relations to ecologic resources exist. soil has a great potential for introducing the studied region specifications. hence, it challenge...

2016
Jiang LI Xiaomin MAO Shaozhong KANG David A. BARRY

Understanding of hydrological processes, including consideration of interactions between vegetation growth and water transfer in the root zone, underpins efficient use of water resources in arid-zone agriculture. Water transfers take place in the soil-plant-atmosphere continuum, and include groundwater dynamics, unsaturated zone flow, evaporation/transpiration from vegetated/ bare soil and surf...

Attaeian, B., Farokhzadeh, B., Ildoromi, A.R., Nourouzi, M.,

In a watershed, land use As one of the most effective factors in basin hydrologic response, Can have significant role in the hydrological cycle and water resources. The knowledge of the effects of land use change on basin hydrology responses can help to determine the appropriate strategy to achieve sustainable development of water resources and a management model. The purpose of this study is t...

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