Study on Method for Regional Eco-system Biodiversity Assessment

In order to assess regional ecosystems of same category,six principals of assessment and hierarchical indexes were put forward, the indexes inelude diversity,peculiarity,representativeness,rarity,stability,naturalness,conservational value,accessibility,human interference,natural calamity and current conservational condition.By quantifying the indexes, the relative practical and controllable method of quantiative assessment has been established.