Ecological evaluation on 40 years of Teak plantation in Thailand

2014 Fiscal Year Final Research Report

• Project/Area Number: 24405011
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Ecology/Environment
• Research Institution: Kochi University
• Principal Investigator: SAKURAI Katsutoshi 高知大学, その他の部局, 副学長 (90192088)
• Co-Investigator(Kenkyū-buntansha): ICHIE Tomoaki 高知大学, 教育研究部自然科学系, 准教授 (80403872) ; TANAKA Sota 高知大学, 教育研究部総合科学系, 教授 (10304669) ; MATSUOKA Masayuki 高知大学, 教育研究部自然科学系, 准教授 (50399325) ; MORI Makito 高知大学, 教育研究部自然科学系, 准教授 (60325496)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: タイ / チーク植林 / 生態系修復 / 多様性 / 土壌環境

Outline of Final Research Achievements

In northern Thailand, there are two types of teak plantation; those of FIO have been well-managed as commercially-based industrial forests while those of RFD have been left without any management for the main purpose of ecosystem conservation. This study investigated those plantations in terms of GIS mapping, soil environments, forest metrological environments, and tree ecophysiology in order to clarify the environmental factors and mechanisms that affect teak growth performance and to assess the effectiveness to rehabilitate degraded forest. As the main finding, the most important factor which determinates teak growth in this area is regarded to be soil moisture availability and amount during the early rainy season. In order to attain both teak production and forest conservation, new zonation of forests to production forest and conservation forest with high biodiversity will be required taking into consideration soil moisture retention and supply capacity.

Free Research Field

熱帯土壌学