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Ambrina Khan
Dr. Ambrina Sardar Khan completed her Ph.D. in Environmental Science from the University of Allahabad in the year 2010. Since then she was working as an Assistant Professor at Amity University, Uttar Pradesh, and is engaged in UG and PG teaching. She taught various subjects like Geo-environmental and Meteorological Sciences, Environmental Law, audit and policies, Ecology and biodiversity, Disaster Management and planning and Environmental pollution to the students of Master in
Environmental Sciences and M.Tech Environmental Engineering. Her areas of interest are Air and water quality monitoring, ecotoxicology, ecology and biodiversity, Nutritional and health risk assessment and Sustainable urban development. She had published two books namely Disaster management
and preparedness with CBS publication and health & Environment: Key factors for Sustainable Urban Development: Changing cities with challenging issues with Lambert Publication. She is actively engaged in R&D and has published several research papers in various reputed journals. She is recently started working in the field of Student welfare and holistic development. She has organized several conferences, webinars, and workshops.
Supervisors: Supervisor and a Faculty
Environmental Sciences and M.Tech Environmental Engineering. Her areas of interest are Air and water quality monitoring, ecotoxicology, ecology and biodiversity, Nutritional and health risk assessment and Sustainable urban development. She had published two books namely Disaster management
and preparedness with CBS publication and health & Environment: Key factors for Sustainable Urban Development: Changing cities with challenging issues with Lambert Publication. She is actively engaged in R&D and has published several research papers in various reputed journals. She is recently started working in the field of Student welfare and holistic development. She has organized several conferences, webinars, and workshops.
Supervisors: Supervisor and a Faculty
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pattern of an area. Human-induced land use land cover (LULC) changes have become a major driver of global climate
change. In general, urbanization affects the interactions between the surface temperature and atmosphere at spatial and
temporal scales. The objective of this study is to analyze whether the changes in the land use land pattern of Greater Noida are
contributing to the change in its land surface temperature (LST). Geographic Information System (GIS) was used to extract
information from satellite images for three years namely, 2000, 2011, and 2013. The biophysical parameter Normalized
Difference Vegetation Index (NDVI) was calculated from satellite images for examining the relationship between land surface
temperature and vegetation. The results showed that there has been a 35.23% increase in the settlement and developed lands
from 2000 to 2013 leading to a sharp decline of 91.14 % in the cultivation and others. Forest and urban vegetation
decreased by 4.06% from 2000 to 2010 but during 2013 the forest and urban vegetation were found to have increased by 7.45%.
There has been a 1ºC to 2ºC rise in the surface temperature in Greater Noida from 2000 to 2013.
Keywords: Urbanization; LST; NDVI; LULC; GIS
pollutants like NOx, SOx, ozone, and PM10 were monitored in ten sites during the growth of rice and
wheat. The Air Quality Index (AQI) of villages falls mostly in the category of moderately polluted sites.
Air Pollution Tolerance Index (APTI) is a tool applied for categorizing sensitive or tolerant plants
towards air pollution and is calculated by using four biochemical parameters like total chlorophyll
content, ascorbic acid, pH, and relative water content of rice and wheat. Results indicated that the pH of
cell sap of both the crops was acidic to neutral pH (3.5-6.9) at polluted sites while neutral to slightly
alkaline (7.0-7.9) at less polluted sites. Ascorbic acid content was high at polluted sites since ascorbic
acid shows a defense mechanism against air pollution. Chlorophyll content (up to 0.61mg/g) and relative
water content have shown a significant decrease at most polluted sites. As per APTI values (APTI<11),
both the crops were sensitive to air pollution in the selected area. APTI might be beneficial in the
selection of crop species in the polluted area which shows that a higher concentration of air pollutants
can damage crops severely. APTI was found to be positively correlated with pH, total chlorophyll
content, and relative water content and negatively correlated with ascorbic acid.
pattern of an area. Human-induced land use land cover (LULC) changes have become a major driver of global climate
change. In general, urbanization affects the interactions between the surface temperature and atmosphere at spatial and
temporal scales. The objective of this study is to analyze whether the changes in the land use land pattern of Greater Noida are
contributing to the change in its land surface temperature (LST). Geographic Information System (GIS) was used to extract
information from satellite images for three years namely, 2000, 2011, and 2013. The biophysical parameter Normalized
Difference Vegetation Index (NDVI) was calculated from satellite images for examining the relationship between land surface
temperature and vegetation. The results showed that there has been a 35.23% increase in the settlement and developed lands
from 2000 to 2013 leading to a sharp decline of 91.14 % in the cultivation and others. Forest and urban vegetation
decreased by 4.06% from 2000 to 2010 but during 2013 the forest and urban vegetation were found to have increased by 7.45%.
There has been a 1ºC to 2ºC rise in the surface temperature in Greater Noida from 2000 to 2013.
Keywords: Urbanization; LST; NDVI; LULC; GIS
pollutants like NOx, SOx, ozone, and PM10 were monitored in ten sites during the growth of rice and
wheat. The Air Quality Index (AQI) of villages falls mostly in the category of moderately polluted sites.
Air Pollution Tolerance Index (APTI) is a tool applied for categorizing sensitive or tolerant plants
towards air pollution and is calculated by using four biochemical parameters like total chlorophyll
content, ascorbic acid, pH, and relative water content of rice and wheat. Results indicated that the pH of
cell sap of both the crops was acidic to neutral pH (3.5-6.9) at polluted sites while neutral to slightly
alkaline (7.0-7.9) at less polluted sites. Ascorbic acid content was high at polluted sites since ascorbic
acid shows a defense mechanism against air pollution. Chlorophyll content (up to 0.61mg/g) and relative
water content have shown a significant decrease at most polluted sites. As per APTI values (APTI<11),
both the crops were sensitive to air pollution in the selected area. APTI might be beneficial in the
selection of crop species in the polluted area which shows that a higher concentration of air pollutants
can damage crops severely. APTI was found to be positively correlated with pH, total chlorophyll
content, and relative water content and negatively correlated with ascorbic acid.
the stramenopile clade of the SAR supergroup and are recognized as members of Bacillariophyceae or Bacillariophyta. The chloroplasts of diatoms contain chlorophylls a and c along with carotenoids such as fucoxanthin: the pigment responsible for the characteristic golden brown
colour. These tiny organisms are the major component of the phytoplankton communities of the oceans and constitute approximately half of the organic material found in the oceans. They are responsible for the production of roughly 25–30% of oxygen globally which equals the contribution of the rainforests combined. They are known to be more energy efficient than their counterparts with organic cell walls. Moreover, marine diatoms essentially sequester considerable amounts of carbon
dioxide from the atmosphere. Fossil evidence traces back the origin of diatoms to the early Jurassic Period through molecular clocks indicating the appearance of diatoms in the Triassic period. The emergence of diatoms caused a major shift in the ocean carbon cycle with increased
carbon locking in dead diatom cells. Genome sequencing of diatoms such as Thalassiosira pseudonana and Phaeodactylum tricornutum has thrown light on the unique secondary endosymbiotic origin of diatoms. These genomic studies also revealed several biochemical features of diatoms which are similar to that of organisms of the animal kingdom. Diatoms have been extensively used in the water quality estimation of aquatic
ecosystems such as lakes, rivers, wetlands, etc. and also in aleolimnological reconstructions. They are robust ecological monitors and have been used for assessment purposes throughout the world. The Water Framework Directive has recommended the utilization of diatoms in water quality monitoring programmes. The widespread use of diatoms for ecological health assessment of ecosystems has led to the generation of indicators and sensitivity values of several diatom species. Diatom indices are increasingly being used to evaluate the state of aquatic ecosystems. Recently the potential of terrestrial diatoms for ecological monitoring has also been explored. Commercial applications of diatoms have a long history. Diatomaceous earth, the fossilized remains of diatoms, has been used in explosives, filtration systems, pest control, agriculture, etc. The unique way of deposition of silica by diatoms in their frustules has widespread applications in nanotechnology such as biosensors,
bioimaging, drug delivery, etc. Diatoms have been extensively used in forensics and biofuel production. The domain of diatom research has tremendous potential. From unravelling secrets of evolution to climate change mitigation, insights into the world of diatoms are expected to uncover evolutionary enigmas and enhance their commercial applications