Amit Kumar

Amit Kumar
Central University of Jharkhand · Department of Geoinformatics

Ph.D.
Vegetation dynamics, Urban ecology, Climate change, SDG, hazard-risk-resilience, Remote Sensing, AIML.

About

125
Publications
101,038
Reads
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1,302
Citations
Citations since 2017
107 Research Items
1232 Citations
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Introduction
Dr. Amit Kumar has been involved in interdisciplinary research with a focus to improve urban ecology through physio-socio-economic-hazard-risk investigations and methods to augment ecological quality and resilience primarily in the urban milieu using geoinformatics & machine learning techniques. He is engaged with various R&D projects including state-of-the-art NISAR, GISAT & AVIRIS-NG missions. He is member of various academic societies including IUCN CEM-SA, NAGI and GFBI-USA.
Additional affiliations
January 2012 - June 2019
Central University of Jharkhand
Position
  • Professor (Assistant)

Publications

Publications (125)
Article
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The Severe Acute Respiratory Syndrome-Coronavirus Disease 2019 (COVID-19) pandemic caused by a novel coronavirus known as SARS-CoV-2 has caused tremendous suffering and huge economic losses. We hypothesized that extreme measures of partial-to-total shutdown might have influenced the quality of the global environment because of decreased emissions o...
Article
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In the present study, the long-term variability in precipitation and temperatures was analyzed in relation to the urban environment of Ranchi Metropolitan Region, eastern plateau region, India. The daily meteorological observations of 5 decades (1961–2010) indicated an increasing mean temperature (0.4 °C) and decreasing cumulative precipitation in...
Article
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Flooding is a recurrent hazard in east Gangetic plains, largely on account of natural factors that pose risks to life and property. Bagmati and Burhi Gandak rivers draining parts of North Bihar causes substantial flooding owing to higher rainfall. This comprehensive study was carried out to map near real-time flood inundation using multi-temporal S...
Article
The study encompasses spatio-temporal land use/ land cover (LULC) monitoring (1989–2014) and urban growth modelling (1994–2024) of Delhi, India to deduce the past and future urban growth paradigm and its influence on varied LULC classes integrating geospatial techniques and Cellular Automata (CA). The study focused on scrutinising the reliability o...
Article
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Evaluation of a natural disaster's impact is essential for formulating preparedness, mitigation, and response plans. This study evaluates the impact of super cyclone Amphan, which hit the Indian Sundarban Biosphere Reserve on May 20, 2020. Pre-and post-cyclone land use/land cover (LULC) maps were created using LANDSAT 8 OLI, while flood inundation...
Article
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Owing to such a crucial role that forests perform in an ecosystem, studying the vegetation dynamics in terms of its productivity becomes inevitable. The study aimed to assess forest productivity and biochemical variability of Dalma Wildlife Sanctuary (DWS), Eastern India coupling remote sensing and in-situ measurements of 51 samples comprising 17 d...
Chapter
Kaziranga National Park (KNP) in Assam, is a UNESCO world heritage site, which is primarily affected by recurrent devastating floods. KNP is home to two-thirds of the world’s great one-horned rhinoceroses (Rhinoceros unicornis) population that is under high anthropogenic pressures, and abiotic stresses. KNP falls within the Asian monsoon zone, and...
Article
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Cyclonic storms and extreme precipitation lead to loss of lives and significant damage to land and property, crop productivity, etc. The “Gulab” cyclonic storm formed on the 24th of September 2021 in the Bay of Bengal (BoB), hit the eastern Indian coasts on the 26th of September and caused massive damage and water inundation. This study used Integr...
Chapter
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Forests in India perform an important role in the economic and sociocultural life of the tribal people who live in and around the forests, as they support rural livelihoods and food security. India has a wide variety of forest types, including tropical evergreen, semievergreen, moist deciduous, dry deciduous, subtropical montane, temperate, alpine...
Chapter
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Protected areas (PAs) are the terrestrial or marine regions that are preserved for conserving biodiversity and their habitats to serve a range of socioecological functions including scientific research and education, protection of wildlife, conservation of biodiversity, and securing a range of ecological goods and services. India has strong legisla...
Chapter
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Sustainable Forest Management (SFM) contributes to human well‐being by meeting people's socioeconomic, ecological, cultural, and spiritual needs at local, national, and global levels. Integrated SFM enhances forests’ carbon value, and maintains or improves other important local or global ecosystem services to support local livelihoods. Enhancing th...
Article
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The study aimed to determine the above-ground biomass (AGB) of tropical deciduous forests in Central India using field-based techniques and spaceborne quad-pol ALOS PALSAR-2 L-band and dual-pol Sentinel 1A C-band synthetic aperture radar (SAR). Field sampling based on 73 forested grids exhibited a diverse forest composition in the Satpura Tiger Res...
Article
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The present study highlights the forest fire hotspots based on daily forest fire occurrence during 2000–2020 and its subsequent long-term impacts on different vegetation types in Central India. The MODIS (MCD14DL) based study exhibited the recurrence of fire incidences in central and southern parts of forests and affected substantial parts of the d...
Article
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The present study is aimed to determine the relationship between above-ground biomass (AGB) and plant diversity attributes in the Sal forests of Ranchi, Eastern India. High AGB (410.70 Mg ha−1) and carbon stock (Cp) (193.06 Mg C ha−1) were recorded in the studied forests, and forest-wise AGB ranged from 0.19 to 24.75 Mg ha−1 (mean 4.45 ± 0.45 Stand...
Article
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The present study is focused on the flood inundation in Brahmaputra Basin, which is one of the most recurrent and destructive natural disasters of the region. The flood inundation was assessed using C-Band Sentinel 1A synthetic aperture radar (SAR) during 2015-2020 with precipitation patterns, runoff discharge, and their impacts on land cover in th...
Article
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The latitudinal diversity gradient (LDG) is one of the most recognized global patterns of species richness exhibited across a wide range of taxa. Numerous hypotheses have been proposed in the past two centuries to explain LDG, but rigorous tests of the drivers of LDGs have been limited by a lack of high-quality global species richness data. Here we...
Article
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This study highlights the land use/land cover change, and its implications on the long-term changes in various hydrometeorological parameters in India during 2001–2018. The study exhibited a decrease in grassland (15.1%), barren land (10.2%), and shrubland (9.5%) in contrast to an increase in deciduous broadleaf forest cover (27.4%) and croplands (...
Article
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The present study focuses on mapping and identification of the pigment concentration and dominant invasive species in Mudumalai Tiger Reserve (MTR), Tamil Nadu, India using optical (Sentinel 2A) and hyperspectral (Hyperion) earth observation satellite images. The Hyperion satellite data-based study exhibited dominance of dense vegetation (40.64%) a...
Article
The present study highlights the long-term variations in temperature and precipitation using time series datasets of CRU and ERA5-Land across the Himalayan region. The Mann-Kendall and Sen's slope-based trend analysis exhibited an apparent warming trend in the region, with higher increase in Tmin (1.5°C) and comparatively lower increase in Tmax (0....
Chapter
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Forests are important terrestrial carbon sinks and help in mitigating the emissions of CO2, and other greenhouse gases (GHGs). Besides, it provides multiple ecosystem goods and services including livelihood security, socio-economic development, ecosystem functioning, biodiversity maintenance, carbon dynamics, nutrient cycling, and climate regulatio...
Chapter
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Deforestation and forest degradation are impairing the amplitude of forests to produce various ecosystem products and services, livelihood security, and its contribution towards mitigating the greenhouse gas emissions and climate change. Indian forests support the sustenance needs of ~300 millions of tribal people and forest dwelling rural populati...
Article
This paper describes an open-source method for generating megacity-scale building height maps without proprietary software or Differential Global Navigation Satellite System surveyed ground control points (GCPs). We use the open-source Satellite Stereo Pipeline (S2P) software along with four scenes of 2.5m resolution Cartosat-1 data for Bengaluru t...
Article
The study focuses on the spatial heterogeneity and footprint analysis of Greater Hyderabad Metropolitan Corporation (GHMC), India using local indicators of spatial association (LISA) and grey level co-occurrence matrix (GLCM) based on Sentinel 1A/B Synthetic Aperture Radar (SAR) satellite observations. The study demonstrated the dominance of homoge...
Research
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The present article was published in https://weather.com/en-IN/india/biodiversity/news/2022-03-25-invasive-species-can-survive-better-in-changed-climatic . The above article has been published from a wire agency with minimal modifications to the headline and text.
Article
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The study focuses on urban damage and surface deformation in the Kathmandu city region that occurred due to the massive earthquake in Nepal in 2015. The deformation was estimated from pre-and post-earthquake C-band Sentinel-1A synthetic aperture radar (SAR) satellite images employing the Interferometric SAR (InSAR) technique. The study highlighted...
Article
The present study deals with the estimation of satellite-based gross and net primary productivity (GPP and NPP) in combination with in-situ observations in Dalma Wildlife Sanctuary, Eastern India using light use efficiency (LUE) models namely vegetation photosynthesis model (VPM) and vegetation photosynthesis and respiration model (VPRM). Several p...
Article
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Significance Tree diversity is fundamental for forest ecosystem stability and services. However, because of limited available data, estimates of tree diversity at large geographic domains still rely heavily on published lists of species descriptions that are geographically uneven in coverage. These limitations have precluded efforts to generate a g...
Article
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The study examined the spatial pattern of tree diversity, their population structure, regeneration status, and impacts of ecological disturbances on forest structure in 412 forested grids in tropical deciduous forests of Central India using the belt transect method. The study recorded a total of 123 tree species of which 48 (39%) were IUCN‐red list...
Article
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The aim of this study is to elucidate the potential risk zones prone to the invasion of perennial ornamental plant Lantana camara, which is native to South America and has invasive tendency in Jharkhand, eastern India, for present (2020) and the future (2050) climatic conditions under four different Representative Concentration Pathways scenarios (...
Article
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Bauhinia vahlii Wight & Arn. is an important multipurpose, woody climber used by the rural communities in India for various economic activities as well as for medicinal purposes. Indiscriminate extraction of the woody climber has led to population decline in its distribution range. Climate change has further led to the amplification leading to dras...
Article
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This study evaluated the COVID-19 risk considering positive cases (as a hazard) and the demographic structure (as a socio-economic vulnerability) at districts scale across India using fuzzy analytical hierarchical process and geospatial modelling. Despite the fact that the high and very high COVID-19 hazard was observed in a limited area (14.2%, 23...
Article
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The large-scale Land-Uses and Land-Cover Changes (LULCC) in India in the past several decades is primarily driven by anthropogenic factors that influence the climate from regional to global scales. Therefore, to understand the LULCC over the Indian region from 2002 to 2015 and its implications on temperature and precipitation, we performed Weather...
Article
The biophysical and biochemical spectral responses in the form of red-edge position (REP) and narrowband indices for carbon stock mapping have been evaluated in this study using AVIRIS-NG data in Sholayar Reserve Forest, Kerala. Maximum first-derivative spectrum, linear four-point interpolation technique, and adjusted linear-extrapolation technique...
Article
The heatwave is a disastrous hazard having significant impacts on health and society. This study analyses the heatwave hazards and risk for India's current and future scenarios using socioeconomic vulnerability and temperature datasets during the summer (April–June) season. The Census of India (CoI) 2011 datasets were considered to assess current v...
Article
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Tropical cyclone “Amphan” developed as a super cyclone on 19 May 2020 and caused severe impact on the landmass with very high torrential precipitation (>250 mm day−1), and extremely high wind speed (>150 km h−1) after landfall on 20 May 2020. The tropical cyclone Amphan largely affected agricultural land (78.2%) and forest, including mangroves (10....
Article
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The present paper highlights the importance of lac cultivation through Butea monosperma. We have modelled the suitable habitat of major lac host B. monosperma using MAXENT for the current and future climatic scenarios (RCPs 2.6, 4.5, 6.0 and 8.5). The study suggested the dominance of suitable habitats of B. monosperma in central-eastern to eastern...
Article
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The flood in Kashmir valley has a long history and is considered as recurrent phenomena, though the flood occurred in 2014 was extremely severe due to its extent, intensity and impact on mankind. To understand the variation of this precarious climatic condition, the long-term variability of precipitation over Kashmir valley was analysed over a peri...
Article
Andaman and Nicobar islands with vast variety of mostly endangered coral species are witnessing gradual coral bleaching. The present study focussed on temporal monitoring of various corals disposition along with impact of bleaching in two (North Reef and North Sentinel) islands of Andaman and Nicobar during the year 2010 and 2019. Floating algae in...
Article
Spatially explicit measurement of Above Ground Biomass (AGB) is crucial for the quantification of forest carbon stock and fluxes. To achieve this, an integration of Optical and Synthetic Aperture Radar (SAR) satellite datasets could provide an accurate estimation of forest biomass. This will also help in removing the uncertainties associated with t...
Article
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Flooding is the most widespread and frequent natural disaster in developing countries. Until recent years, determining flood extent and inundation depth were undertaken using hydrodynamic models but have pertinence constraints in data-scarce regions. This has given the new potential to characterize floods (e.g., inundation, depth, duration) at a la...
Article
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Keeping aside the economic consequences, the imposition of strict lockdown in order to break the chain of deadly infection of SARS-CoV-2, has potentially improved the global environmental quality by facilitating a significant reduction in atmospheric pollution. In the present study, the level of atmospheric pollutants in India viz., NO2, AOD, and P...
Chapter
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Satellite-based navigation systems are one of the most indispensable technologies in the present-day world that have made a vast improvement since the day of its inception due to global availability of signal and performance. It allows measuring positions in real time with an accuracy of up to a few centimeters on the Earth. The advent of Global Po...
Article
The present study deals with hyperspectral species mapping, utilization of optimal bands, and studying the spectral separability of vegetation species using AVIRIS-NG data. To reduce data redundancy, a wide range of optimal spectral bands (491 nm, 541 nm, 641 nm, 722 nm, 772 nm, 852 nm, 942 nm, 1047 nm, 1132 nm, 1443 nm, and 2475 nm) were selected...
Conference Paper
The present study illustrates the changing land use pattern in the major urban settlements of the Himalayan region using multi-temporal satellite images during 1991-2018. Although the region is extremely sensitive due to its limited topographic terrain and fragile ecosystem, the growing urbanisation and rapid population growth has a huge impact on...
Conference Paper
The present study illustrates the changing land use pattern in the major urban settlements of the Himalayan region using multi-temporal satellite images during 1991-2018. Although the region is extremely sensitive due to its limited topographic terrain and fragile ecosystem, the growing urbanisation and rapid population growth has a huge impact on...
Poster
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Forest fire is one of the important ecological disturbances that causes forest degradation and loss. Warming trends due to climate change and recurrent droughts increase the tendency of wildfires to occur. The frequency and subsequent damage due to forest fire is increasing day by day with the increase in population. The impact of the forest fire i...
Article
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The present study was conducted to predict the current and future potential distribution of a tree species Pterocarpus marsupium Roxb. in Ranchi, Eastern India using ecological niche modeling. Nine environmental variables comprising of isothermality, precipitation of wettest and warmest quarter, annual temperature range, soil type, human influence...
Article
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The present study focused on the recent flood inundation (July 2020) that occurred in the lower Indo-Gangetic-Brahmaputra plains (IGBP) using concurrent C-band Sentinel-1A Synthetic Aperture Radar images in Google Earth Engine. The study exhibited that a substantial proportion of IGBP (40,929 km 2) was inundated primarily in Bangladesh (9.09% of th...
Article
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The present study focused on forest types classification and major plant species assemblages in Mudumalai forests region utilizing Airborne Visible/Infrared Imaging Spectrometer Next Generation (AVIRIS-NG). The phytosociological analysis exhibited a total of 657 individuals (1095 individuals ha-1) of 24 tree species belonging to 22 genera, and 18 f...
Chapter
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The present chapter focuses on climate change impacts and ecosystem-based adaptation in Eastern Himalayan forests of Arunachal Pradesh. High variations in altitudinal gradient, precipitation, and land surface temperature have resulted in high vegetation diversity and density. The varying relief zones implies all major types of climatic zones in the...
Article
Hyperspectral remote sensing is highly efficient in retrieving the leaf chlorophyll concentrations and its deficiency, which is manifested in the form of a spectral shift in reflectance. In the present study, the detection of chlorosis in vegetation was assessed through spectral measures and Yellowness Index (YI) utilizing hyperspectral Airborne Vi...
Preprint
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Background Above ground biomass (AGB) is a useful measure for assessing changes in forest structure and functional, and play a significant role in studying carbon stocks, the effect of deforestation and carbon sequestration on the global carbon balance. The present study aimed to study the relationship between AGB and community parameters in Sal fo...
Article
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The study focuses on spatio-temporal dynamics of urban ecosystem services (UES) and their contribution in maintaining thermal comfort in Bhubaneswar city, India. An extensive increase in UES demand (grey) patches (187.95%) was observed during 1992–2016 in contrast to significant decline (47.94%) in UES supply (blue–green) patches, primarily in the...
Article
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The present study is focused on the movement and impact of extremely severe tropical cyclone ‘Fani,’ which developed in the Bay of Bengal near the Equator during April 2019 and caused a severe impact on landmass due to high wind speed (max.180 km/h) and extreme precipitation (150–300 mm/day). The multi-satellite-based study exhibited that the cyclo...
Chapter
This chapter addresses the multiple linkages between climate change, hazard events in urbanized areas, and their intrinsic relationship leading to increased exposure of risk of urban dwellers, emphasizing the Indian scenario. Cities are complex and interdependent systems, extremely vulnerable to risks both from natural and human‐made hazards. The c...
Article
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Kashmir Valley has witnessed a catastrophic flood in 2014, which led thousands of people homeless and devastated the agricultural lands. In the present study, the impact of 2014 flood occurred during the month of September was analysed in the vicinity of Dal lake using the pre- and post-flood periods satellite observations. The study exhibited an i...
Article
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Background Tropical forests have been experiencing remarkable rates of transformation over the past century as they are getting degraded or decimated to a great extent by anthropogenic activities. This study aims at investigating the long-term forest cover transformation in Palamau Tiger Reserve (PTR), Jharkhand, India, using Landsat TM, ETM ⁺ , an...
Article
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Predicting the distribution of future climatically suitable habitat areas is crucial for the long-term success of species conservation and management plans. However, generating accurate predictions may be difficult as the assumptions and variables used in the construction of different climate scenarios may result in divergent trajectories of change...
Article
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The very high anomalous precipitation (more than 500 mm) and release of water from reservoirs located in an upper catchment resulted in severe flood inundation situation in downslope regions of Kerala State in August 2018. In the present study, the satellite-based precipitation was analyzed on a daily to weekly basis during the flood duration in Ke...
Chapter
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Climate change is one of the most complex global environmental problems that mankind is dealing in the present days. India is among one of the most vulnerable countries that has already been experiencing changes in climate and the impacts of climate change. Various sectors such as agriculture, forestry, health, socio-economy, etc. have found to be...