- February 3, 2021
- Posted by: admin1
- Category: DPN Topics
Subject : Environment
Context : The Delhi cabinet Monday approved a plan to restore over 400 hectares of the Central Ridge, that is currently covered by an invasive tree species planted by the British in the 1930.
- The five-year revival plan intends to turn the ridge into a full-grown forest with indigenous plants and trees that will provide a recreational space for people in the heart of the city, forest department officials said.
- The plan would be made possible with the removal of the vilayati kikar tree, or Prosopis juliflora, which allows no other species to thrive due to its weed-like properties — fast growth in arid conditions, depleting ground water and killing any competition.
- Prosopis Juliflora is a shrub or small tree in the family Fabaceae.
- It is native to Mexico, South America and the Caribbean.
- It was initially introduced in India during colonial times. Since then it has become invasive species
- It causes stomach poisoning in livestock by inducing a permanent impairment of its ability to digest cellulose.
- It causes drying up of water bodies and ground water as it absorbs more than 4 litres of water to obtain one kg of biomass.
- It cannot even shelter birds as it produces less oxygen and more carbon dioxide.
- It causes land erosion due to the loss of the grasslands that are habitats for native plants and animals.
- Dispersal of the species is mainly through animals by endozoochory (dispersal by vertebrate animals).
- Other modes of seed dispersal are –
Autochory – Self dispersal
Barochory – Dispersal by gravity
Anemochory – Dispersal by air
Hyderochory – Dispersal by water
Chiropterochory – Dispersal by bats
Epizoochory – Dispersal by Non-vertebrate animals