نتایج جستجو برای: soil classification

تعداد نتایج: 667784  

ژورنال: علوم آب و خاک 2014

One of the main objectives of soil classification systems is to identify the differences of soil properties for management purposes. In this study, the efficiency of American and WRB soil classification systems were compared in order to describe some of soil physical, chemical and mineralogical properties in arid and semiarid regions of central Iran. Khatoon-Abad and Mobarekeh plains as arid re...

Journal: :Soil Science Society of America Journal 1922

2010
Pavel Krasilnikov Richard W. Arnold Juan-José Ibáñez

The classification of soils originated from three main sources: from early empirical soil surveys, from folk soil classifications and from scientific theory of pedology. The first soil classifications reflected their origin in different extent, and still remain certain features of their initial sources. The actual situation in soil classification is discouraging, mainly due to the diversity of ...

Journal: :تاکسونومی و بیوسیستماتیک 0
سید غلامعلی جلالی حامد اسدی امید اسماعیل زاده اعظم نورایی حامد اسدی

the purpose of this study was the introduction of seed accumulation index as a new approach in the evaluation of soil seed bank consistency in the populus caspica in noor reserved forest park. sampling were made above ground vegetation at peak vegetation cover during june 2010 by systematic- selective method. soil samples were collected during late june, late november and early february by hamm...

2011
P. Bhargavi S. Jyothi

Soil Classification deals with the systematic categorization of soils based on distinguished characteristics as well as criteria. We developed Data Mining techniques like: GATree, Fuzzy Classification rules and Fuzzy C Means algorithm for classifying soil texture in agriculture soil data. In this paper, we give a comparative study of developed algorithms. The study is used to compare and analyz...

ژورنال: علوم آب و خاک 2010
حمیدرضا کریم‌زاده, , امیرحسین قره‌شیخلو, , محمدرضا وهابی, ,

In order to classify and determine the plant communities in Karkas mountainsides, central Iran, quantitative data of 46 environmental characteristics including climate (12 characteristics), soil (26 characteristics), geology and physiology (8 characteristics), were analyzed based on partial Euclidean distance indicator using minimum variation method. The results showed the clustered separation ...

2017
Shengyao Jia Hongyang Li Yanjie Wang Renyuan Tong Qing Li

Soil is an important environment for crop growth. Quick and accurately access to soil nutrient content information is a prerequisite for scientific fertilization. In this work, hyperspectral imaging (HSI) technology was applied for the classification of soil types and the measurement of soil total nitrogen (TN) content. A total of 183 soil samples collected from Shangyu City (People's Republic ...

2005
X. Z. Shi

Soil classification systems are not consistent among countries or organizations thereby hindering the communication and organizational functions they are intended to promote. The development of translations between systems will be critical for overcoming the gap in understanding that has resulted from the lack of a single internationally accepted classification system. This paper describes the ...

Journal: :فیزیک زمین و فضا 0
احمد ادیب دانشیار، گروه مهندسی نفت، دانشکده فنی، دانشگاه آزاد اسلامی واحد تهران جنوب، تهران، ایران

summary based on the results of the analysis of site effects, mostly those with shear wave velocity and the fundamental period chosen as the basis for classification. in revision of earthquake resistant design regulations for buildings, classification of lands should be subject to the field conditions, geological, geotechnical, geophysical, and laboratory tests.in this context, the average shea...

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