Environment & Ecology · Agroforestry Ecological Functions
In an agroforestry system, the process of 'Nutrient Pumping' primarily involves which of the following mechanisms?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The artificial injection of liquid fertilizers into the subsoil through perforated tree roots to stimulate deep growth
- 2The transfer of large volumes of groundwater from deep aquifers to surface crops during peak summer months via capillary action
- 3The rapid decomposition of agricultural crop residues to create a thick layer of topsoil humus for nutrient-heavy trees
- 4The drawing of nutrients from lower soil layers by deep-rooted trees and their deposition on the surface via leaf fall for use by shallow-rooted crops✓
Correct answer
The drawing of nutrients from lower soil layers by deep-rooted trees and their deposition on the surface via leaf fall for use by shallow-rooted crops
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