Effects of Topography, Soil Organic Matter, and Chemical Properties on the Growth of Teak (Tectona Grandis) Plantations in Northeast Thailand

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
Information about site conditions is essential to select teak (Tectona grandis) plantation sites in Northeast Thailand. We examined the effects of topography (slope steepness, elevation, and slope aspect), soil organic matter, and chemical factors on tree growth (site index) in 7- to 30-year-old teak plantations (n = 87) in Northeast Thailand. Soil organic matter and chemistry data were collected from the topsoil (0–20 cm) and subsoil (40–60 cm). The linear mixed model indicated that teak growth was positively affected by slope steepness (P < 0.05) and Ca content and negatively by Na content. Mg showed a weak correlation (P < 0.1) due to its association with Ca. We suggest that slope steepness alters the balance of exchangeable cations, and that accumulation of soil organic matter due to surface drainage plays an important role. In conclusion, suitable sites for growing teak in the study area in Northeast Thailand are those on slopes with topsoil rich in Ca.
刊行年月日
作成者 Iwao NODA Woraphun HIMMAPAN Tosporn VACHARANGKURA Somsak SUKCHAN Wilawan WICHIENNOPPARAT Naoyuki FURUYA
著者キーワード Acrisol farm forestry site conditions site index site selection
公開者 Japan International Research Center for Agricultural Sciences
受付日 2020-11-02
受理日 2021-01-28
55
4
言語 eng
備考 In Press