RESEARCH ON SUCCESSION OF LANDSCAPE AND VEGETATION COMMUNITY USING NETWORK CENTRALITY ANALYSIS AND CHARACTERISTICS OF PHYSICAL ENVIRONMENTS INFLUENCING THE VEGETATION SUCCESSION IN THE KAKEHASHI RIVER

Abstract

This study analyzed successions of landscape and vegetation community in past 25 years using network centrality analysis in the Kakehashi river. Here, we aim to extract Landscapes Before Overgrowth of Wood lands (LBOWs) that have ability to indicate signs on over growth woodland. In the results, Phragmites japonica steud, miscanthus and water surface were extracted as LBOWs. It was estimated that succession from LBOWs to wood lands or to the other vegetation community was differentiated by flow direction, velocity change and sediment flux.