Eucalyptus
Explanation
The utilization of plants to remove, transfer, stabilize, or destroy contaminants in soil and water is known as Phytoremediation. Specifically, the concept of Bio-drainage involves using tree species with high transpiration rates to absorb excess water and control waterlogging or manage wastewater.
Option Analysis
- Neem (Neem): Incorrect. While Neem (Azadirachta indica) is valued for its medicinal and insecticidal properties, it is not characterized by the exceptionally high water uptake rates required for draining sewage ponds.
- Banyan (Banyan): Incorrect. The Banyan tree (Ficus benghalensis) has a massive canopy and aerial roots, but it is not typically employed for the rapid absorption of wastewater or bio-drainage purposes.
- Eucalyptus (Eucalyptus): Correct. Eucalyptus species are well-documented for their rapid growth and high transpiration rates. They act as "biological pumps," absorbing large quantities of water from the soil and releasing it into the atmosphere. This characteristic makes them highly effective for planting around sewage ponds to absorb excess wastewater and in reclaiming waterlogged areas.
- Pine (Pine): Incorrect. Pine trees are coniferous species typically found in hilly or temperate regions. They are adapted to different climatic conditions and are not suitable for wastewater absorption in the context of sewage management.
Key Takeaway: Eucalyptus trees are recommended for wastewater management and bio-drainage due to their ability to absorb and transpire significant volumes of water, effectively reducing waterlogging and managing sewage effluent.