手法を比較

	森林における生物多様性指数	森林インベントリサンプリング
分野	林学	林学
系統	Process / pipeline	Process / pipeline
提唱年	1948–2004	1973
提唱者	Shannon, Simpson, and Magurran	Loetsch, Zöhrer, and Haller
種類	Analysis and quantification pipeline	Statistical sampling pipeline
原典	Shannon, C. E. (1948). A Mathematical Theory of Communication. The Bell System Technical Journal, 27(3), 379–423.	Loetsch, F., Zöhrer, F., & Haller, K. E. (1973). Forest Inventory. BLV Verlagsgesellschaft.
別名	Forest diversity index, Species richness assessment, Shannon index forestry	Forest stand sampling, Timber inventory sampling, Plot-based forest survey
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.	Forest inventory sampling is a systematic approach to estimate forest characteristics such as timber volume, species composition, and biomass by surveying a representative subset of trees rather than conducting exhaustive censuses. Developed by Loetsch and colleagues in the 1970s, the method applies statistical sampling theory to forest assessment and remains the foundation for sustainable forest management and resource monitoring worldwide.