vertical simulation of soil salinity using markov chain in ardakan pistachio gardens

نویسندگان

روح اله تقی زاده مهرجردی

دانشگاه تهران ابوالحسن فتح آبادی

دانشگاه گنبد کاووس سمیه آسمانی

دانشگاه اردکان

چکیده

in this research, a first order markov chain model was applied to simulate soil salinity in nine standard depths and 10 classes in the cultivated pistachio areas of ardakan city. transition probability matrix, kernel and uniform distribution were used to simulate 500000 soil profiles. results indicate kernel function could reproduce soil salinity values with statistical criteria (i.e. mean, standard deviation, skewness and kurtosis) more closely to the observed data when compared to data simulated by uniform function. moreover, simulation processes from down-up is more accurate than that of up-down method. overall, makov simulation technique is able to consider the relationship between different classes.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

analysis of ruin probability for insurance companies using markov chain

در این پایان نامه نشان داده ایم که چگونه می توان مدل ریسک بیمه ای اسپیرر اندرسون را به کمک زنجیره های مارکوف تعریف کرد. سپس به کمک روش های آنالیز ماتریسی احتمال برشکستگی ، میزان مازاد در هنگام برشکستگی و میزان کسری بودجه در زمان وقوع برشکستگی را محاسبه کرده ایم. هدف ما در این پایان نامه بسیار محاسباتی و کاربردی تر از روش های است که در گذشته برای محاسبه این احتمال ارائه شده است. در ابتدا ما نشا...

15 صفحه اول

Two-dimensional Markov Chain Simulation of Soil Type Spatial Distribution

At present, such research is still very rare in soil science literature. Soils typically exhibit complex spatial variation of multi-categorical For characterizing the spatial correlation of categorivariables such as soil types and soil textural classes. Quantifying and cal variables in geosciences, the main descriptive tools assessing soil spatial variation is necessary for land management and ...

متن کامل

Study of Changes in Soil Moisture and Salinity Under PlasticMulch and Drip Irrigation in Pistachio Trees

In this study, changes in soil moisture and salinity contents in drip irrigation combined with white and black plastic mulches compared to no mulch (control) was evaluated. The experiment was carried out in two commercial pistachio orchards (Ohadi cultivar) with irrigation frequencies of 8 to 12 days with a total water consumption 4100 and 6170 m3ha−1. The study was conducted in a complete rand...

متن کامل

Simulation of human hypnograms using a Markov chain model.

A Markov chain model has been proposed as a mechanism that generates human sleep stages. A method for estimating the parameters of the model, i.e., the transition probabilities (rates) between sleep stages, has been introduced and applied to 95 hypnograms taken from 23 subjects. The rates characterize interindividual differences and nightly variations of the sleep mechanism, related to sleep-on...

متن کامل

An Efficient Markov Chain Model for the Simulation of Heterogeneous Soil Structure

et al. (1995). Finally, Yeong and Torquato (1998) use a combination of the two-point correlation function and The characterization of the soil habitat is of fundamental importhe lineal path function to characterize the pore geometance to an understanding of processes associated with sustainable management such as environmental flows, bioavailability, and soil try of a broad range of isotropic s...

متن کامل

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023