Answer:
Vegetation structure can be described in several ways, the most common being leaf area index, canopy height, and standing biomass (i.e., above-ground biomass).
Explanation:
Vegetation structure, physiognomy, floristic composition, and climatic conditions have all been employed as means of defining tropical rain forest—one of the world's major biomes. There is no universally agreed definition, but nevertheless a strong consensus position emphasizes features such as a closed evergreen canopy; trees 25 m tall or higher; abundant epiphytes; the presence of large, thick-stemmed woody climbers (lianas); and warm, wet, and relatively aseasonal climate. Substantial spatial variation in the structure, physiognomy, and composition of tropical rainforest due to factors such as altitude, edaphic conditions, and local climate means that any circumscription tends either to be somewhat arbitrary or to lack general applicability.
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