کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8254629 1533634 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stochastic dynamical features for a time-delayed ecological system of vegetation subjected to correlated multiplicative and additive noises
ترجمه فارسی عنوان
ویژگی های دینامیکی تصدیق شده برای یک سیستم زیست محیطی تاخیر در زمان پوشش گیاهی که به صداهای نوشتاری و افزایشی وابسته است
کلمات کلیدی
سر و صدای چندگانه، سر و صدای اعتیاد آور تاخیر زمانی، مدل رشد گیاه زمان متوسط ​​توسعه، متوسط ​​زمان کم شدن، ثبات سیستم، 0540، 0250،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک آماری و غیرخطی
چکیده انگلیسی
In this paper, the generalized potential function, the stationary probability distribution function (SPDF), the mean development time and the mean shrinking time of a time-delayed vegetation growth system induced by cross-correlated internal and external noises are investigated. Our main results are designed to reveal the fact that the resonant phenomenon of the mean first-passage time (MFPT) takes place in the vegetation growth model because of the interaction of different types of noises and time delay. It can inhibit the vegetation system from developing rapidly and reduce the stability of the system by increasing of intensity of multiplicative noise and time delay. Meanwhile, it can produce beneficial effect on maintaining the stability of the vegetation system by increasing the strength of correlated noise. However, it can exert complicated effect on the stability of system by increasing the intensity of additive noise in different cases. During the spread process of the vegetation, it plays a positive role in propelling the development of vegetation by reducing the cross-correlated noise strength and increasing the multiplicative, additive noise intensities and time delay. On the contrary, in the decline process of vegetation system, it plays a crucial part in maintaining the vegetation biomass by increasing the strength of cross-correlated noise and weaken the multiplicative, additive noise intensities and time delay.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chaos, Solitons & Fractals - Volume 91, October 2016, Pages 490-502
نویسندگان
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