Papers by PANKAJ KUMAR ROY
Reflection of Soil–Water Relationship Under Different Land Use Pattern: A Case Study of Neora River, West Bengal, India
Lecture Notes in Civil Engineering, 2021
Feasibility Study on Energy Generation from Municipal Organic Waste Through Biogas Production
Lecture Notes in Civil Engineering, 2021
Spatiotemporal distribution of oil spill effect in the estuarine terrain of Bhagirathi-Hooghly River, West Bengal, India
Advances in Oil-Water Separation, 2022
Assessment of Dynamic Groundwater Potential of Agartala Municipality Area
Dynamic groundwater potential of Agartala municipality has been estimated using groundwater resou... more Dynamic groundwater potential of Agartala municipality has been estimated using groundwater resources estimation methodology-97. The methodology uses the rainfallinfiltration method, water-level fluctuation technique and water regression method and the estimated groundwater recharge is validated by using some empirical norms for recharge estimation. The groundwater utilization is also estimated. The stage of groundwater development is worked out and assessment units are categorized based on the stage of groundwater development and long-term water level trend. The annual replensihable groundwater resources of Agartala are 2106.61 ha-m and net annual groundwater availability is 1895.94 ha-m. The annual groundwater draft for 2009 is 313.64 ha-m. Thus the overall stage of groundwater development is 16.53 % for the period of 2009. Accordingly, the future dynamic groundwater stage would be 22.58% based on the population growth and considering 10% agricultural and industrial development. T...
Study of water productivity model on wetlands: a case study of Bhagirathi-Hooghly sub-catchment basin, Southern West Bengal, India
Environmental Monitoring and Assessment, 2021
In this article, we explored how to determine the water productivity of wetlands in a compact and... more In this article, we explored how to determine the water productivity of wetlands in a compact and evolving basis with geographic information systems and agro-climatic models. Our research aimed to use the AquaCrop model to determine the extent to which the wetlands in the Bhagirathi-Hooghly Basin in South West Bengal, India, have used their water productivity to meet human needs. The wetland capacity and productivity are declining over time due to pressure from the growing population with declining land area. Various statistical data obtained from the field are calibrated based on the AquaCrop model. The validity of the information collected from the model depends on the prediction error (Pe), coefficient of determination (R2), index of agreement (d) and model efficiency (ME) and based on which the goodness of fit develops. It is concluded that the economic dependence of the people living along the wetland has shifted from rice production to fishing and other aquatic plant production. The water productivity of aquatic resources is 7% higher than the water productivity of rice. The study marks the success of a future strategy for wetland development and urges the state government to undertake management policies to create a healthy wetland environment.
Assessing the nature of seasonal meteorological change in people’s dependency on wetland: a case study of Bhagirathi–Hooghly floodplain system
Environment, Development and Sustainability, 2021
Wetland acts as a biological supermarket and helps to determine people’s lives, livelihoods and n... more Wetland acts as a biological supermarket and helps to determine people’s lives, livelihoods and needs. In third world countries like India, wetlands are suppressed by over populated surroundings. Although the size, volume and depth of wetlands change due to the whims of the weather, and water pollution and sedimentation are caused by various human activities, people still use wetlands as a means of rice and fish production. This article discusses the continuous decaying of wetlands in the floodplain region of the Bhagirathi–Hooghly river and its impact on human dependency on wetlands. The location of the continuous siltation of the wetlands is known with the help of bathymetry which proves that the wetlands are getting more and more decayed. Agricultural runoff and sewerage from adjacent farmland also continue to pollute the wetlands' environment, with high levels of TDS (total dissolved solids) and Cl2+ (chloride). The result shows that rice and fish production in these decayed wetlands is continuously increasing with seasonal water budget scenario. Comparing economic production with water budgets through SK (seasonal Kendall) test and ARMA (autoregressive moving average process), trend analysis shows the growing demand of the people has made the position of the wetlands miserable, but the economic aspect of the people has benefited. Dredging, public awareness, water pollution prevention and sustainable use of wetlands can be considered as the only way to restore the decayed wetlands to their glory.
Modelling soil erosion risk of a tropical plateau basin to identify priority areas for conservation
Environmental Earth Sciences, 2021
Soil erosion induced by physical and anthropogenic activities needs serious concern to deal with.... more Soil erosion induced by physical and anthropogenic activities needs serious concern to deal with. In recent days, watersheds have been facing acute soil loss because of deforestation, poor land use management and unscientific agricultural practices. The present paper highlights the goal to decipher soil erosion-susceptible zones in a rain-fed river basin of India having a complex topography comprising the extension of Chotonagpur plateau and parts of Bengal basin. Fuzzy logic algorithm-based analytical hierarchy process (FAHP) with remote sensing and geographical information system (GIS) were used to execute the objective. The soil erosion-susceptible zone (SESZ) was identified assimilating the 14 geo-environmental, hydro-meteorological and anthropogenic conditioning factors such as slope, drainage density, relative relief, stream power index, topographic wetness index, runoff, soil texture, land use and land cover, rainfall erosivity factor, distance from road, distance from settlement, distance from river, geomorphology and soil bareness index based on which sub-basin prioritization for sustainable soil conservation was made. The soil erosion-susceptible zone was classified into five classes, namely very low soil erosion zone (13.20%), low soil erosion zone (25.75%), moderate soil erosion zone (27.62%), high soil erosion zone (21.90%) and very high soil erosion zone (11.53%). Receiver operating characteristics (ROC) curve was generated where area under the curve (AUC) came as 0.82 and a correspondence analysis between the SESZ and the first three ranked factors was also made which together proves the accuracy of the model.
Clean Technologies and Environmental Policy, 2014
Excessive ground water withdrawal can lead to ground water depletion, and this may have serious s... more Excessive ground water withdrawal can lead to ground water depletion, and this may have serious social and economic consequences. Attempts to limit groundwater pumping have been commonly based on the concept of safe yield. In this study, in order to evaluate safe yield, short-and long-duration pumping tests have been performed at four different sites (Purulia District, India) on Damodar River bed. The lithological survey was carried out along the river bed at regular intervals from 500 m to 10.5 km, covering a total stretch of 10-km upstream and 0.5-km downstream , to determine the soil profile and other soil characteristics. The points, where the maximum depth of porous medium was obtained, were selected for carrying out the pumping yield tests. The appropriate hydrogeologic approaches were employed to estimate the values of aquifer parameters, viz., specific yield (S y), transmissivity(T), and hydraulic conductivity (K) for the aforesaid sites under study, which were found to be in the range of 0.043-0.175, 2082-3983, and 219-603 m/day, respectively. A hypothetical aquifer-stream water interaction system has been developed using GMS software (groundwater modeling system) not only to represent the hydraulic head fluctuations in the groundwater system around well fields but also to quantify the flow rate due to change in river stage, recharge due to rainfall, and also to determine how the surface water could affect groundwater due to pumping.
Reason-A Technical Journal, 2012
The geographical coordinates of the Magrahat basin are latitude-22°12′ N and longitude-88°32′ E. ... more The geographical coordinates of the Magrahat basin are latitude-22°12′ N and longitude-88°32′ E. The basin area is 612.46 km 2. The tidal backwater conservation measure has been suggested in the Magrahat basin in South 24 Parganas, West Bengal, India, for storing the maximum backflow influx of the tidal water by controlling the sluice gates at different canals/ khals based on the field survey and monitoring. In this study, twenty major canals/ khals are considered, namely, Dhanpota khal, Nazra khal, Srichanda khal, Diamond Harbour creek khal, Usthi Nainan khal, Sangrampur khal, Keorapukur khal (upper and lower), Magrahat khal, Hotor canal, Dhamua khal,
Journal of The Institution of Engineers (India): Series A, 2016
Wetlands are invaluable components of the environment, ecology, resource potential and biodiversi... more Wetlands are invaluable components of the environment, ecology, resource potential and biodiversity in India. In the Gangetic flood plain of West Bengal, wetlands are used for multiple purposes, and have significant role in the livelihoods of the local people. Thus an awareness of the importance of wetland is raised from few decades, because Government authorities and private organizations are started to realize the fact that wetlands are complex ecological systems, whose structure provides numerous goods and various services, including food storage, water quality sustenance, agriculture production, fisheries and recreation. The objective of this work is to analyze the conditions of unemployed people through labour participation and to evolve an adaptation for the sustainable use of wetlands, emphasizing the economic upliftment for the selected floodplain region. It may be concluded that as some of the floodplain wetlands serves as bird sanctuaries, national parks and reserves of biodiversity, it results in several environmental issues to mitigate and are also used for irrigation, jute retting, collection of edible aquatic plants and animals as well as birds. Thus a plan for floodplain wetlands may be developed to integrate the various uses of the water body with a holistic approach.
Development and Hydraulic Analysis of a Proposed Drinking Water Distribution Network Using Watergems and Gis
ABSTRACT
Water Conservation Measures for Sustainable Livelihood of Rural Communities: A Case Study in West Bengal
The water conservation measure has been suggested on the Piyali River basin area in Kultali Block... more The water conservation measure has been suggested on the Piyali River basin area in Kultali Block of South 24 th Parganas, West Bengal, India for rainwater harvesting based on field survey. In this study, the Basin of Piyali River, an estuarine river with regular tidal influx, with special emphasis on Kultali Block has been chosen for utilizing the water of the Piyali River during dry months and augmenting water supply through rainwater harvesting in the Kultali Block mouza-wise. Especially during flash floods the entire catchments used to be flooded. To eradicate the problem, in early post-independence time a master plan was prepared and implemented by the Irrigation Department to restrict the entry of tidal ingress by means of a major sluice gate and construction of similar sluices in each tributaries debouching to the Piyali River, to check the flood problem in the area as also to conserve rainwater for use in the lean periods. Unfortunately after thirty years of installation of ...
Neighbourhood Perception and Management Options for the National Lake in a Metro City: A Case
Measurement of Diurnal Carbon Sequestration Rate and Aboveground Biomass Carbon Potential of Two Young Species and Soil Respiration in Two Natural Forests in India
Impact of Climate Change on Natural Resource Management, 2010
Chapter 17 Measurement of Diurnal Carbon Sequestration Rate and Aboveground Biomass Carbon Potent... more Chapter 17 Measurement of Diurnal Carbon Sequestration Rate and Aboveground Biomass Carbon Potential of Two Young Species and Soil Respiration in Two Natural Forests in India Bipal K. Jana, Soumyajit Biswas, Mrinmoy Majumder, Pankaj Roy1 and Asis Mazumdar ...
Use of Forest Index or PLANOBAY in Estimation of Water Availability Due to Climate Change
Impact of Climate Change on Natural Resource Management, 2010
Chapter 3 Use of Forest Index or PLANOBAY in Estimation of Water Availability Due to Climate Chan... more Chapter 3 Use of Forest Index or PLANOBAY in Estimation of Water Availability Due to Climate Change Mrinmoy Majumder, Suchita Dutta, Rabindra Nath Barman, Bipal K. Jana, Pankaj Roy, and Asis Mazumdar Abstract The present study tried to estimate future water ...
Application of Parity Classified Neurogenetic Models to Analyze the Impact of Climatic Uncertainty on Water Footprint
Impact of Climate Change on Natural Resource Management, 2010
Chapter 4 Application of Parity Classified Neurogenetic Models to Analyze the Impact of Climatic ... more Chapter 4 Application of Parity Classified Neurogenetic Models to Analyze the Impact of Climatic Uncertainge on Water Footprint Mrinmoy Majumder, Rabindra Nath Barman, Bipal K. Jana, Pankaj Roy, and Asis Mazumdar Abstract Water footprint of an individual, community, or business ...
Impact of Climatic Uncertainty on Water Sequestration of a Subtropical River Basin
Impact of Climate Change on Natural Resource Management, 2010
Chapter 5 Impact of Climatic Uncertainty on Water Sequestration of a Subtropical River Basin Mrin... more Chapter 5 Impact of Climatic Uncertainty on Water Sequestration of a Subtropical River Basin Mrinmoy Majumder, Rabindra Nath Barman, Bipal K. Jana, Pankaj Roy1 and Asis Mazumdar Abstract The water sequestration capacity (WSC) of a region could be defined as the ...
Irrigation water availability for oil palm cultivation in areas affected by shifting cultivation in Arunachal Pradesh
Shifting cultivation provided a way of life for most of the ethnic groups of north eastern states... more Shifting cultivation provided a way of life for most of the ethnic groups of north eastern states. Policy approach to deal with shifting cultivation in Arunachal Pradesh aims to replacing it with permanent forms ofland use by cultivation of oil palm as per availability and suitability of land. In Jhum land area oil palm plantation may be promising in the state. However, as per the requirement of climatic factors and availability of irrigation water, the oil palm cultivation could be practiced in areas where a compact area between 450-500 hectares of land and sufficient rainfall and SUlllly days are available. Since, the minimum land requirement for oil palm plantation, advocated by NRCOp, is 500 ha, a total number of nearly 60,000 nos. plant may be grown in such a composite oil palm garden. In view of non availability of a considerable land area of 500 hectares under single holding and cost involvement, community participation should be encouraged. Since irrigation water requirement of each plant is 200 litres per day, total quantity of 12 million litres or 0.012 MCM of water per day would be required for sustainable growth of such oil palm plantation. Various practices of watershed development can also be applied in the sloping terrain. In the foothill areas of Arunachal Pradesh, with optimum minimum temperature of 6-10°C, shallow aquifers may be tapped with shallow tube wells or dug wells/collector wells with infiltration galleries. Surface water/rain water resources could be developed in and around Jhum cultivation areas through construction of check dams in series with sub surface dams and through construction of ponds.
Life cycle assessment of carbon flow through harvested wood products
Ecology, Environment and Conservation
The chapter discussed a life cycle model of wood products of Dalbergia sissoo from Saharanpur and... more The chapter discussed a life cycle model of wood products of Dalbergia sissoo from Saharanpur and Bijnor to calculate and trace the amount of carbon retained in the wood products before it is released to atmosphere. A simulation model is built to trace the fate of carbon bound in the products produced in the year 2009 for a period of 200 years, until most of the carbon is released back into the atmosphere. The amount of carbon that enters the life cycle is calculated based on the field data collected since 2009 at Saharanpur and Bijnor. The roots (28.4%) are heavy and left out in the forest for decomposition. The bole and the thick branches (70.45%) are used by the wood based industry and the rest of the thin branches and leaves (9.47%) are used as fuel wood after being dried. As most of the portion is used as timber the amount of carbon released in the first year is restricted up to 10% only The rest of the 28.4 % in root decomposes in many years to form the humus part of the soil....
An Introduction and Current Trends of Damodar and Rupnarayan River Network
Impact of Climate Change on Natural Resource Management, 2010
Chapter 25 An Introduction and Current Trends of Damodar and Rupnarayan River Network Mrinmoy Maj... more Chapter 25 An Introduction and Current Trends of Damodar and Rupnarayan River Network Mrinmoy Majumder, Pankaj Roy1 and Asis Mazumdar Abstract Rivers are the important primary resource of landed community for their primary sustenance. Losses of navigability, ...
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Papers by PANKAJ KUMAR ROY