نتایج جستجو برای: soil classification

تعداد نتایج: 667784  

Journal: :IOP Conference Series: Materials Science and Engineering 2021

2016
Ece Aksoy Yusuf Yigini Luca Montanarella

Accuracy in assessing the distribution of soil organic carbon (SOC) is an important issue because of playing key roles in the functions of both natural ecosystems and agricultural systems. There are several studies in the literature with the aim of finding the best method to assess and map the distribution of SOC content for Europe. Therefore this study aims searching for another aspect of this...

Journal: :desert 0
m.j. nematolahi msc graduate, university of tehran, karaj, iran s.k. alavipanah professor, university of tehran, tehran, iran gh.r. zehtabian professor, university of tehran, karaj, iran m. jafari professor, university of tehran, karaj, iran e. janfaza msc graduate, university of tehran, karaj, iran h.r. matinfar assistant professor, university of lorestan, khoram abad, iran

in order to assess the satellite data for soil investigation, aster digital data 20 june 2006, field study and phisiochemical properties of soil, were analyzed. all landcover classes including soils are classified based onmorphological and physico-chemical characteristics. images were geocorrected and photomorphic units were selected based upon visual interpretation and sampling in study area. ...

Journal: :ecopersia 0
yahya parvizi assistant professor, department of soil conservation and watershed management, agriculture and natural resource research center of kermanshah, areeo, kermanshah, iran mosayeb heshmati assistant professor, department of soil conservation and watershed management, agriculture and natural resource research center of kermanshah, areeo, kermanshah, iran mohammad gheituri assistant professor, department of soil conservation and watershed management, agriculture and natural resource research center of kermanshah, areeo, kermanshah, iran

the effects of different climatic, soil, geometric, and management factors on soil organic carbon (soc) degradation and sequestration potential was evaluated in the semi-arid zone of mereg watershed, west of iran. two nonparametric methods, viz. classification and regression tree (cart) and feed forward back propagation artificial neural network (ann) were compared with parametric multivariate ...

2007
P. Tittonell K. D. Shepherd B. Vanlauwe K. E. Giller

To guide soil fertility investment programmes in sub-Saharan Africa, better understanding is needed of the relative importance of soil and crop management factors in determining smallholder crop yields and yield variability. Spatial variability in crop yields within farms is strongly influenced by variation in both current crop management (e.g. planting dates, fertilizer rates) and soil fertili...

Slope instability and mass movement of soil are the most important concerns of road construction scientists and experts as well as environmentalists. Soil is the main material of forest road construction and forms the road bed. In this research in order to avoid time and cost waste in mechanic soil laboratory, the region was divided into same units based on landform in GIS software. 10 soil sam...

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 2018

2011
Michael A. Arbib Victor Barres

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