Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Review biodiversity hotspots conceptual framework diagnostic techniques hotspots de biodiversidad listas rojas marco conceptual red lists revisión sistemática sample size systematic review tamaño muestral técnicas diagnósticas vertebrados vertebrates 样本量 概念框架 生物多样性热点 系统综述 红色名录 脊椎动物 诊断技术