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:: Volume 8, Issue 16 (8-2020) ::
PEC 2020, 8(16): 229-248 Back to browse issues page
Modeling of Vegetation Loss in Protected Areas by Management Plan (Case Study: Sorkheh Hesar National Park)
Zahra Mosaffaei , Ali Jahni * , Mohammad Ali Zare Chahouki , Hamid Goshtasb Meygoni , Vahid Etemad
, ajahani@ut.ac.ir
Abstract:   (2782 Views)
The main purpose of this study was to determine the most effective factors and management plans influencing vegetation degradation and to provide a prediction model for destruction in various management programs using regression and artificial neural network. In so doing, after determination of similar ecological units with the help of a 1: 50000 DEM, 480 soil samples were analyzed using stratified transect method based on the depth of the soil and rooting of the four-zone profiles with depths of 5, 10, 15 and 20 cm Drilled. A total of 600 vegetation samples were taken using a 2 × 2 square plot and minimum level method based on the type, density and distribution of plant species. In order to model regression and artificial neural network, human, ecological and soil factors as input variables and Shannon biodiversity index were selected as output variables. The regression model was designed in SPSS software and network model in MATLAB software. The results of the Enter and Remove methods with a R-value of 422.0 in the regression model (MSE = 1.811) and a value of R506 / 0 in artificial neural network model (MSE = 0.9694) showed that the network model with multi-layered perceptron structure and hidden layer and 18 neurons are more efficient in predicting the degradation of the ANN model to the total coefficient of determination of the regression model (0.506) and less error (0.694). The results of the sensitivity analysis indicated that soil moisture content is important in the degradation of vegetation. Hence, it is recommended to prevent degradation by restoring soil and vegetation in damaged areas.
Keywords: Artificial Neural Network, National park, Vegetation Modeling, Regression, Environmental Impact Assessment
Full-Text [PDF 690 kb]   (600 Downloads)    
Type of Study: Research | Subject: Special
Received: 2019/02/16 | Accepted: 2019/09/21 | Published: 2020/09/21
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Mosaffaei Z, Jahni A, Zare Chahouki M A, Goshtasb Meygoni H, Etemad V. Modeling of Vegetation Loss in Protected Areas by Management Plan (Case Study: Sorkheh Hesar National Park). PEC 2020; 8 (16) :229-248
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Volume 8, Issue 16 (8-2020) Back to browse issues page
مجله حفاظت زیست بوم گیاهان Journal of Plant Ecosystem Conservation
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