手法を比較

	森林における生物多様性指数	Silvicultural Treatment Design
分野	林学	林学
系統	Process / pipeline	Process / pipeline
提唱年	1948–2004	1950s–2000s
提唱者	Shannon, Simpson, and Magurran	Smith, Larson, and classical silviculture
種類	Analysis and quantification pipeline	Planning and decision pipeline
原典	Shannon, C. E. (1948). A Mathematical Theory of Communication. The Bell System Technical Journal, 27(3), 379–423.	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.
別名	Forest diversity index, Species richness assessment, Shannon index forestry	Silvicultural prescription, Stand treatment planning, Forest management design
関連	4	4
概要	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.	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.