Modeling forest extent change and its influencing factors, using logistic regression model in GIS environment, (case study: Vaz and Lavij basins)

تحقیقات جنگل و صنوبر ایران. 2013;21(1):86-98 DOI 10.22092/ijfpr.2013.3805

 

Journal Homepage

Journal Title: تحقیقات جنگل و صنوبر ایران

ISSN: 1735-0883 (Print); 2383-1146 (Online)

Publisher: Research Institute of Forests and Rangelands of Iran

LCC Subject Category: Agriculture: Forestry

Country of publisher: Iran, Islamic Republic of

Language of fulltext: Persian

Full-text formats available: PDF, XML

 

AUTHORS

Mohammad Mahdi Hosseinzadeh (Assistant Professor, Faculty of Earth Science, Shahid Beheshti University, Tehran, I.R. Iran)
Khebat Derafshi (M.Sc. student of geomorphology, Faculty of Earth Science, Shahid Beheshti University, Tehran, I.R. Iran)
Babak Mirbagheri (Senior Expert, Department of Remote Sensing, Shahid Beheshti University, Tehran, I.R. Iran)

EDITORIAL INFORMATION

Double blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 28 weeks

 

Abstract | Full Text

Forests degradation and their convert to pasture, agriculture and urban or rural land use, occurs annually at high extent, in which make high damages to natural resources. In the current research, the logistic regression model was applied to identify effective factors of forest degradation and zoning possible forest degradation at Vaz and Lavij basins. Landsat Satellite images were used to identify land use variation within 1998 to 2006. Results showed that forest area was reduced from 81.97% in 1998 to 77.43% in 2006. Distance from village, river and road and also slope gradient were considered as independent variables, whereas land use change (forest degradation) was considered as dependent variable in the model. The logistic regression model was applied at two cases: classified and standardized variables. The obtained coefficient from the applied model at classified case indicated that forest degradation is more likely to happen at 0-100 m. distance from village, whereas the obtained coefficient from the applied model at the standardized case, indicated that there was negative relationship between the independent and dependent variables. Overall, zoning map of possible forest degradation at the studied area was developed at five levels: severe, high, moderate, low and very low, based on the calculated coefficients. According to the results achieved from modeling at classified case, 11.06 % of the studied area has potential for sever forest degradation.