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2016 Fiscal Year Final Research Report

Statistical Models of Deforestation in Human Dimension

Research Project

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Project/Area Number 26330040
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Statistical science
Research InstitutionHiroshima University of Economics (2015-2016)
Shimane University (2014)

Principal Investigator

TANAKA Shojiro  広島経済大学, 経済学部, 教授 (00197427)

Project Period (FY) 2014-04-01 – 2017-03-31
Keywords人口との相互作用による森林減少モデル / 空間統計学 / データ駆動型解析
Outline of Final Research Achievements

This aided research explored functional forms of man-landcover interrelations. The basic strategy was to use landcover and topological data mashed up with cell-formed population density data.
Two factors -- human population size and relief energy: difference of minimum altitude from the maximum in a sampled area -- were picked up firstly to make elucidation of forest coverage ratio on the same site. The functional forms with sigmoidal shape were suggested by step functions fitted to one-kilometer square high precision grid-cell data in Japan. By calculating relative appropriateness to data, AIC and BIC were applied. The two-type values by step functions -- one by independent model, the other by a model that takes neighbor effect -- indicated baseline fitness indices to examine succeeding suitability of candidate functions. The best model showed best performance in common among test areas of China and Japan.

Free Research Field

環境データ解析

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Published: 2018-03-22  

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