手法を比較

	Silvicultural Treatment Design	森林における生物多様性指数
分野	林学	林学
系統	Process / pipeline	Process / pipeline
提唱年	1950s–2000s	1948–2004
提唱者	Smith, Larson, and classical silviculture	Shannon, Simpson, and Magurran
種類	Planning and decision pipeline	Analysis and quantification pipeline
原典	Smith, D. M., Larson, B. C., Kelty, M. J., & Ashton, P. M. S. (1997). The Practice of Silviculture: Applied Forest Ecology (9th ed.). John Wiley & Sons.	Shannon, C. E. (1948). A Mathematical Theory of Communication. The Bell System Technical Journal, 27(3), 379–423.
別名	Silvicultural prescription, Stand treatment planning, Forest management design	Forest diversity index, Species richness assessment, Shannon index forestry
関連	4	4
概要	Silvicultural treatment design is the process of developing specific management prescriptions for forest stands to achieve defined objectives (timber yield, biodiversity, carbon storage, watershed protection). Codified in foundational texts by Smith and colleagues, silvicultural design integrates stand assessment, growth models, and ecosystem understanding to specify interventions (thinning, shelterwood, clear-cut, rotation-age modification) that steer forest development toward intended outcomes while respecting ecological constraints.	Forest biodiversity indices quantify species richness, evenness, and overall diversity in forest ecosystems. Rooted in information theory (Shannon) and statistical ecology (Simpson, Magurran), these indices compress complex multispecies data into interpretable metrics. Applied to forest inventory data, biodiversity indices guide conservation planning, assess ecological health, and track responses to management or disturbance.