نتایج جستجو برای: soil mapping

تعداد نتایج: 375443  

اکبرلو, موسی , بهره مند, عبدالرضا, جعفری فوتمی, عیسی, نیک نهاد قرماخر, حمید,

After the destructive floods in Golestan Province during the early seventies, numerous biomechanical practices were performed in order to the restoration of vegetation cover and affecting the runoff in the main cluster of Gorganrood river, so the extensive studies are necessaire for the evaluation of their results. The goal of this study was to evaluate the changes in some physicochemical prope...

Journal: :Remote Sensing 2014
Said Nawar Henning Buddenbaum Joachim Hill Jacek Kozak

The monitoring of soil salinity levels is necessary for the prevention and mitigation of land degradation in arid environments. To assess the potential of remote sensing in estimating and mapping soil salinity in the El-Tina Plain, Sinai, Egypt, two predictive models were constructed based on the measured soil electrical conductivity (ECe) and laboratory soil reflectance spectra resampled to La...

2015
Jonathan Núñez Ashly Arevalo Danilo Moreta Hannes Karwat Manabu Ishitani John Miles Guntur Subbarao Margaret Worthington Georg Cadisch Idupulapati Rao Jacobo Arango

Soil nitrogen (N) loss due to rapid nitrification (oxidation of ammonium to nitrate) is a serious problem with economic and environmental implications. As a result, a large proportion of N fertilisers applied to crops are lost to the environment via nitrate leaching and nitrous oxide emissions. The tropical pasture grass Brachiaria humidicola (Bh) exudes organic molecules from roots that inhibi...

2008
Tarendra Lakhankar Hosni Ghedira Marouane Temimi Manajit Sengupta Reza Khanbilvardi Reginald Blake

Active microwave remote sensing observations hold the potential for efficient and reliable mapping of spatial soil moisture distributions. However, soil moisture retrievals from microwave remote sensing techniques are typically complex because of the inherent difficulty in characterizing the interactions among land surface parameters that contribute to the retrieval process. Therefore adequate ...

Journal: :آب و خاک 0
راضیه دائم پناه غلامحسین حق نیا امین علیزاده علیرضا کریمی کارویه

abstract in the recent decades, application of geostatistic and remote sensing for mapping salinity and sodicity of surface soil and monitoring it's changes have been developed. the goal of this research was to compare the capability of geostatistic and remote sensing methods for mapping salinity-sodicity of soils in playa from sourthern mah valat county, in the khorasan razavi province. 88 sam...

2015
Mingkai Qu Weidong Li Chuanrong Zhang Biao Huang Yongcun Zhao

The accumulation of a trace metal in rice grain is not only affected by the total concentration of the soil trace metal, but also by crop variety and related soil properties, such as soil pH, soil organic matter (SOM) and so on. However, these factors were seldom considered in previous studies on mapping the pollution risk of trace metals in paddy soil at a regional scale. In this study, the sp...

Journal: :مدیریت اراضی 0
رضا سکوتی اسکوئی دانشیار مرکز تحقیقات کشاورزی و منابع طبیعی آذربایجانغربی. سمیه غلام آزاد کارشناس ارشد خاکشناسی. نادر قائمیان هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی آذربایجانغربی.

soil degradation means lose of soil quality which usually is caused by improper use of land by human. decline of soil quality includes lose of physical, chemical and biological properties of soil. this study aimed to identify and assess the quality of soil and land, to determine the type of land degradation and estimates their severity based on completed forms gathered field data and mapping th...

Journal: Desert 2018

After collecting data, in researches, the type of data distribution must be determined; since any analysis requires the distribution of its own data. Soil properties, such as salinity, are also the same case. Due to its direct and indirect effects on plant growth, soil salinity is an important feature that has always been investigated in agriculture and natural resources, leading to a lot of re...

Journal: :اکو هیدرولوژی 0
عبدال شهریور استادیار، مرکز تحقیقات آبخیزداری استان کهگیلویه و بویراحمد صمد شادفر دانشیار، پژوهشکدۀ حفاظت خاک و آبخیزداری مجید خزایی دانشجوی دکتری آبخیزداری، دانشگاه هرمزگان بهزاد عادلی دانشجوی دکتری آبخیزداری، دانشگاه هرمزگان

surface. the development of gullies causes the loss of a great amount of soil and could be considered as one of the principal causes of geo-environmental degradation. in this research fazi model introduced for gully erosion zonation in arid and semiarid area considered to calibration and validation in kahkiloeh and boyerahmad province. therefore, the abgandi watershed were selected by considera...

Journal: :Remote Sensing 2009
Tarendra Lakhankar Hosni Ghedira Marouane Temimi Manajit Sengupta Reza Khanbilvardi Reginald A. Blake

Satellite remote sensing observations have the potential for efficient and reliable mapping of spatial soil moisture distributions. However, soil moisture retrievals from microwave remote sensing techniques are typically complex due to inherent difficulty in characterizing the interactions among land surface parameters that contribute to the retrieval process. Therefore, adequate physical mathe...

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