Why do logged tropical rain forest soils typically have nutrient-poor soils?Question 24Select one:a.Logging results in soil temperatures that are lethal to nitrogen-fixing bacteria.b.The cation exchange capacity of the soil is reversed as a result of logging.c.Tropical bedrock contains little phosphorous.d.Most of the nutrients in the ecosystem are removed in the harvested timber.
Question
Why do logged tropical rain forest soils typically have nutrient-poor soils?Question 24Select one:a.Logging results in soil temperatures that are lethal to nitrogen-fixing bacteria.b.The cation exchange capacity of the soil is reversed as a result of logging.c.Tropical bedrock contains little phosphorous.d.Most of the nutrients in the ecosystem are removed in the harvested timber.
Solution
The main reason why logged tropical rainforest soils typically have nutrient-poor soils is because most of the nutrients in the ecosystem are removed in the harvested timber.
Here's a step-by-step explanation:
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Tropical rainforests are known for their rich biodiversity, but the soils in which they grow are often nutrient-poor. This is because the majority of the nutrients are stored in the living biomass, not in the soil.
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When trees and other vegetation are cut down and removed during logging, the nutrients they contain are also removed. This includes nutrients like nitrogen, phosphorus, and potassium, which are essential for plant growth.
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Once the vegetation is removed, there's little left to return nutrients to the soil. The fallen leaves and dead organisms that normally decompose to replenish soil nutrients are no longer present.
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Additionally, without the tree canopy to protect the soil, it can be exposed to heavy rainfall common in tropical areas. This can lead to nutrient leaching, where nutrients are washed out of the soil, further depleting its nutrient content.
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Over time, this can result in soils that are very poor in nutrients, making it difficult for new vegetation to grow. This is why logged tropical rainforest soils are typically nutrient-poor.
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