Science, asked by mt0017, 1 year ago

How does deforestation lead to reduction of soil fertility?

Answers

Answered by zebronics33
4

Logging and subsequently harvesting trees removes nutrients, like phosphates, from the system. The removal of the vegetation that would also normally act as a protective cover and windbreak increases the raindrop impact and wind velocity, whilst simultaneously decreasing the humus content. This accelerates soil erosion from wind and rain splash. Reduced humus content means there is less infiltration and the soil is looser, and so is more easily eroded and removed from the area in runoff. Removal of root systems reduces the root binding effect that gives the soil structure and holds it together. A further impact of deforestation is the reduced evapotranspiration rate, leading to decreased humidity and therefore reduced regional rainfall – contributing to accelerated desertification. These cumulative effects result in a reduction in the nutrient content of the soil and also in the depth of the layer of fertile topsoil.


mt0017: please answer in short
zebronics33: Logging and subsequently harvesting trees removes nutrients, like phosphates, from the system. ... Reduced humus content means there is less infiltration and the soil is looser, and so is more easily eroded and removed from the area in runoff.
mt0017: THANKS FOR YOUR HELP
zebronics33: mark as brainliest
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