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Stochastic Behavior of Plant Water Stress Index and the Impact of Climate Change  

Han, Suhee (Department of Environmental System Engineering, Pukyong National University)
Yoo, Gayoung (Department of Environmental Science and Engineering, Kyung Hee University)
Kim, Sangdan (Department of Environmental System Engineering, Pukyong National University)
Publication Information
Journal of Korean Society on Water Environment / v.25, no.4, 2009 , pp. 507-514 More about this Journal
Abstract
In this study, a dynamic modeling scheme is presented to describe the probabilistic structure of soil water and plant water stress index under stochastic precipitation conditions. The proposed model has the form of the Fokker-Planck equation, and its applicability as a model for the probabilistic evolution of the soil water and plant water stress index is investigated under a climate change scenario. The simulation results of soil water confirm that the proposed soil water model can properly reproduce the observations and show that the soil water behaves with consistent cycle based on the precipitation pattern. The simulation results of plant water stress index show two different PDF patterns according to the precipitation. The simple impact assessment of climate change to soil water and plant water stress is discussed with Korean Meteorological Administration regional climate model.
Keywords
Climate change; Ecohydrology; Fokker-Planck equation; Plant water stress index; Soil water;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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