生态塔（又称能量金字塔；英文：Ecological Pyramid或Trophic pyramid）是某生态系统中各营养级所占的生物质能或拥有的生物质能生产力的图形表示，用来表达各级之间生物能量的传递关系。因生物质能及其生产力一般都逐级向上递减而状如塔或金字塔而得名。

生态塔的最低一级为生产者，其上依次为初级（食草生物）、次级（捕食食草生物者）和三级消费者（捕食次级消费生物）等，有时会有捕食三级消费者的第四级消费者。

An ecological pyramid (also trophic pyramid, eltonian pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or bio productivity at each trophic level in a given ecosystem.

Biomass is the amount of living or organic matter present in an organism. Biomass pyramids show how much biomass is present in the organisms at each trophic level, while productivity pyramids show the production or turnover in biomass.