نتایج جستجو برای: digital soil mapping

تعداد نتایج: 672171  

2012
Xiao-Lin Sun Yu-Guo Zhao Hui-Li Wang Lin Yang Cheng-Zhi Qin A-Xing Zhu Gan-Lin Zhang Tao Pei Bao-Lin Li

In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t a r t i c l e i n f o Keywords: Fuzzy c-means clustering Fuzzy validity function Digital soil mapping Sensit...

2017
Gábor Illés Katalin Takács László Pásztor

A unified, national soil type map with spatially consistent predictive capabilities was compiled applying traditional and newly tested Digital Soil Mapping classification methods: segmentation of a synthesized image consisting of predictor variables and multi-phase, sequential classification by Classification and Regression Trees, Random Forests and Artificial Neural Networks. Object based clas...

Journal: :تحقیقات آب و خاک ایران 0
روح اله تقی زاده مهرجردی استادیار، دانشکدة کشاورزی و منابع طبیعی دانشگاه اردکان فریدون سرمدیان استاد، دانشکدة مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمود امید استاد، دانشکدة مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران غلامرضا ثواقبی استاد، دانشکدة مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران نورایر تومانیان استاد، دانشکدة مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمد جواد روستا استاد، دانشکدة مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمد حسن رحیمیان

in response to the demand for soil spatial information, the acquisition of digital auxiliary data and their matching with field soil observations is on the increase. with the harmonization of these data sets, through computer based methods, the so-called digital soil maps are increasingly being found to be as reliable as the traditional soil mapping practices, and with no prohibitive costs. the...

Journal: :Remote Sensing 2015
Said Nawar Henning Buddenbaum Joachim Hill

Modeling and mapping of soil properties has been identified as key for effective land degradation management and mitigation. The ability to model and map soil properties at sufficient accuracy for a large agriculture area is demonstrated using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) imagery. Soil samples were collected in the El-Tina Plain, Sinai, Egypt, concurren...

Journal: :European Journal of Soil Science 2022

Digital soil mapping (DSM) approaches provide information by utilising the relationship between properties and environmental variables. Calibration of DSM models requires measurements that may often have substantial measurement errors which propagate to outputs need be accounted for. This study applied a geostatistical-based approach incorporates error variances in covariance structure spatial ...

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