scholarly journals Significant decrease of lightning activities during COVID-19 lockdown period over Kolkata megacity in India

2020 ◽  
Vol 747 ◽  
pp. 141321 ◽  
Author(s):  
Indrajit Chowdhuri ◽  
Subodh Chandra Pal ◽  
Asish Saha ◽  
Rabin Chakrabortty ◽  
Manoranjan Ghosh ◽  
...  
Keyword(s):  
Kolkata Megacity

scholarly journals Living environment matters: Unravelling the spatial clustering of COVID-19 hotspots in Kolkata megacity, India

2020 ◽  
pp. 102577 ◽  
Author(s):  
Arijit Das ◽  
Sasanka Ghosh ◽  
Kalikinkar Das ◽  
Tirthankar Basu ◽  
Ipsita Dutta ◽  
...  
Keyword(s):  
Spatial Clustering ◽  
Living Environment ◽  
Kolkata Megacity

scholarly journals Step-wise Land-class Elimination Approach for extracting mixed-type built-up areas of Kolkata megacity

2017 ◽  
Vol 34 (5) ◽  
pp. 504-527 ◽  
Author(s):  
Ansar Khan ◽  
Soumendu Chatterjee ◽  
Hashem Akbari ◽  
Saad Saleem Bhatti ◽  
Apurba Dinda ◽  
...  
Keyword(s):  
Mixed Type ◽  
Kolkata Megacity

Roadside Vegetation in and Around the Megacity of Kolkata Along an Urbanisation Gradient

2021 ◽  
Vol 63 (1-2) ◽  
pp. 77-86
Author(s):  
N. C. Karmakar ◽  
J. Ballav ◽  
A. Hazra
Keyword(s):  
Urban Areas ◽  
Fossil Fuels ◽  
Ecological Status ◽  
Ecological Analysis ◽  
Vehicular Pollution ◽  
Air Contamination ◽  
Roadside Vegetation ◽  
Local Plant ◽  
Shrubby Species ◽  
Kolkata Megacity

Combustion of fossil fuels by the on-road vehicles is major contributor of air pollution which affects the surrounding vegetation and their habitat in addition to human health hazards. Study on the concurrence between vehicular greenhouse gas emissions and associated plant community is important to assess the present day problem scenario on environmental equilibrium. An ecological analysis has been carried out from five locations along roadside of the suburban interiors to the highly vehicle congested urban areas of Kolkata megacity. Quantitative study on naturally grown road side vegetation covering seedlings of tree and shrubby species, herbaceous annuals and perennials along the suitable length of each study area was conducted following standard methodology. Increasing vehicular pollution shows reciprocal correlation with species richness and species diversity. From community structure analyses across the emission gradient it was revealed that a few species exhibited tolerance to withstand increasing air contamination by successful population growth. Nevertheless, the present study might be worthwhile in assessing ecological status of the local plant communities subjected to varying level of vehicle traffic.

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