Question

Do trees count as abiotic factor for biomes?

Answer 1

Short answer: No — trees are biotic. They are living organisms that make up the biological (living) component of a biome.

Extra detail and useful caveats:
- Abiotic factors are the non‑living physical and chemical parts of the environment (temperature, sunlight, precipitation, soil pH, nutrients, wind, etc.).
- Biotic factors are the living parts (plants, animals, fungi, microbes). Trees fall into this category.
- Dead wood or leaf litter is non‑living organic matter. It originated from living trees but is no longer alive; ecologists sometimes treat that detritus as a nonliving pool (and as part of nutrient cycling), so in some contexts it functions as an abiotic component.
- Trees strongly influence abiotic conditions (shade, humidity, soil composition, microclimate). That interaction is why distinguishing biotic vs abiotic is important when studying ecosystems, but it doesn’t make trees abiotic.

Summary: Living trees = biotic. Dead wood/detritus = nonliving material (treated as abiotic/nonliving organic matter in many contexts).