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Lakshminarayan Satpati

Bio: Lakshminarayan Satpati is a academic researcher from University of Calcutta. The author has contributed to research in topic(s): Population & Vulnerability. The author has an hindex of 5, co-authored 17 publication(s) receiving 51 citation(s).
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Journal ArticleDOI
Abstract: The present study assessed climate change vulnerability in agricultural sector of low-lying Sagar Island of Bay of Bengal. Vulnerability indices were estimated using spatially aggregated biophysical and socio-economic parameters by applying principal component analysis and equal weight method. The similarities and differences of outputs of these two methods were analysed across the island. From the integration of outputs and based on the severity of vulnerability, explicit vulnerable zones were demarcated spatially. Results revealed that life subsistence agriculture in 11.8% geographical area (2829 ha) of the island along the western coast falls under very high vulnerable zone (VHVZ VI of 84–99%) to climate change. Comparatively higher values of exposure (0.53 ± 0.26) and sensitivity (0.78 ± 0.14) subindices affirmed that the VHV zone is highly exposed to climate stressor with very low adaptive capacity (ADI= 0.24 ± 0.16) to combat vulnerability to climate change. Hence, food security for a population of >22 thousands comprising >3.7 thousand agrarian households are highly exposed to climate change. Another 17% area comprising 17.5% population covering 20% villages in north-western and eastern parts of the island also falls under high vulnerable (VI= 61%–77%) zone. Findings revealed large spatial heterogeneity in the degree of vulnerability across the island and thus, demands devising area specific planning (adaptation and mitigation strategies) to address the climate change impact implications both at macro and micro levels.

15 citations

Journal ArticleDOI
TL;DR: The present study highlights the adaptive capacity of crop planning including abiotic stress-tolerant cultivars to monsoon rainfall variability for sustaining rainfed rice production vis-à-vis food and livelihood security in vulnerable islands of coastal ecosystem.
Abstract: In the Sagar Island of Bay of Bengal, rainfed lowland rice is the major crop, grown solely depending on erratic distribution of southwest monsoon (SM) rainfall. Lack of information on SM rainfall variability and absence of crop scheduling accordingly results in frequent occurrence of intermittent water stress and occasional crop failure. In the present study, we analyzed long period (1982–2010) SM rainfall behavior (onset, withdrawal, rainfall and wetness indices, dry and wet spells), crop water requirement (CWR, by Food and Agriculture Organization (FAO) 56), and probability of weekly rainfall occurrence (by two-parameter gamma distribution) to assess the variability and impact on water availability, CWR, and rice productivity. Finally, crop planning was suggested to overcome monsoon uncertainties on water availability and rice productivity. Study revealed that the normal onset and withdrawal weeks for SM rainfall were 22nd ± 1 and 43rd ± 2 meteorological weeks (MW), respectively. However, effective monsoon rainfall started at 24th MW (rainfall 92.7 mm, p > 56.7 % for 50 mm rainfall) and was terminated by the end of 40th MW (rainfall 90.7 mm, p 7 days in duration and reflected a significant (p < 0.05) increasing trend (at 0.22 days year−1) over the years (1982–2010). The present study highlights the adaptive capacity of crop planning including abiotic stress-tolerant cultivars to monsoon rainfall variability for sustaining rainfed rice production vis-a-vis food and livelihood security in vulnerable islands of coastal ecosystem.

8 citations

Journal ArticleDOI
01 Sep 2020-Applied Geography
Abstract: The present study comprehensively assessed soil site suitability for selected winter crops in the coastal saline agro-ecological environment of Sagar Island, India by integrating land limitation and crop suitability evaluation framework of FAO Soil properties (eg texture, pH, organic carbon; SOC, electrical conductivity; EC and available macronutrients- NPK) were obtained through extensive grid based (size: 1 km by 1 km) soil sampling and estimation in the laboratory following standard procedures Geo-statistical and visualization methods were applied to match the suitability for selected crops based on their essential soil quality requirements The weights of the soil parameters have been assigned through PCA analysis, based on the relative importance of soil properties sensitive to crop specific growth and development The inverse distance weighting (IDW) interpolation and reclassification methods were adopted for generation of spatial layers of those soil properties Results revealed that, nearly 61% of the geographical area (14618 ha GA) of the Island is under agricultural landuse (AL), mostly dominated by lowland rice-fallow based mono-cropping system (76% of AL) followed by rice-rice double cropping (in 148% AL) Soil suitability analysis for growing winter crops within agricultural area revealed that 384% (5607 ha) of AL is highly suitable (S1) for sunflower, 119% of AL (1739 ha) for chilli, 68% (987 ha) of AL for potato and only 1% (150 ha) of AL is considered to be highly suitable for mustard crop cultivation However, the predominant fine textured soils of the Island falls under moderately suitable (S2) category for growing chilli (851% of AL), mustard (646% of AL), sunflower (557% of AL) and potato (530% of AL) crops More than one third of the soils within the agricultural landuse were found not optimum for growing potato, sunflower and mustard Findings from the study can be harnessed in increasing crop area diversification and intensification with appropriate irrigation and crop management practices in Sagar Island and similar such coastal Islands

7 citations

01 Jan 2012-
Abstract: River banks are multifaceted earth-forms where different geomorphic processes act together in a complex manner. River bank erosion is an episodic event by which an unstable bank tries to reach into a stable one. This is very common in deltaic meandering river systems. The River Ichamati, located in the eastern part of the Ganga delta region, is susceptible to severe bank erosion. This is because of its diurnal and seasonal fluctuation in the tide-dominated discharge, which is favoured by its channel geometry and local land use. The present paper is based on filed level observations and measurements followed by analysis with reference to theoretical perspectives of channel morphometry as provided by renowned scholars in the field. A set of relevant morphodynamic variables like rainfall, discharge, groundwater, geology and soil, and also human factors have been considered for understanding the nature of river bank erosion. Published by IJSS Indian Journal of Spatial Science EISSN: 2249 – 4316 ISSN: 2249 – 3921 journal homepage: Indian Journal of Spatial Science Vol 3.0 No. 2 Winter Issue 2012 pp35 43

6 citations

Journal ArticleDOI
Abstract: With the advancement of human civilization, the river cascading system has been converted into a control system and man has a significant role in it. This paper has examined how the rivers, flowing across the highly populated Ganga–Brahmaputra Delta, are being obliterated due to the close contact of human civilization, as is an example of Ichamati River, an important distributary channel in the district of North 24 Parganas, India. The Ichamati River drains the east and south sides of the North 24 Parganas district and is covered by deep Quaternary sediments produced under tropical monsoon climate in India. The district is densely populated. GIS and a detail field investigation along with two case studies have been incorporated to extract the relationship between man and river, as a control system. This study significantly will draw the attention how the river has modified itself against imprudence human attitude towards environment without any proper river management. This paper has examined the human interventions over river, as a control system, and has discussed about the associated changing characters of river behaviour as the response, e.g. (1) longitudinal profile has been changed temporally due to human impact; (2) the characters of cross profiles have been changed due to the impact of bridge and other human influences; (3) the tidal discharge of the river has been changed downstream upward due to intake of water for different purposes. The primary objective of this article is to examine the role of man as an important controlling element of a river system.

5 citations

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01 Jan 1992-
Abstract: Preface (1999) Preface (1990) 1. Subjects of Sex/Gender/Desire I. 'Women' as the Subject of Feminism II. The Compulsory Order of Sex/Gender/Desire III. Gender: The Circular Ruins of Contemporary Debate IV. Theorizing the Binary, the Unitary and Beyond V. Identity, Sex and the Metaphysics of Substance VI. Language, Power and the Strategies of Displacement 2. Prohibition, Psychoanalysis, and the Production of the Heterosexual Matrix I. Structuralism's Critical Exchange II. Lacan, Riviere, and the Strategies of Masquerade III. Freud and the Melancholia of Gender IV. Gender Complexity and the Limits of Identification V. Reformulating Prohibition as Power 3. Subversive Bodily Acts I. The Body Politics of Julia Kristeva II. Foucault, Herculine, and the Politics of Sexual Discontinuity III. Monique Wittig - Bodily Disintegration and Fictive Sex IV. Bodily Inscriptions, Performative Subversions Conclusion - From Parody to Politics

1,125 citations

01 Jan 2010-
Abstract: Participants are requested to register and obtain meeting badges at the registration counter, located on the ground floor, UNCC, from 08:30 hours to 09:00 hours on the event day. Participants who are not able to register during the time indicated above are requested to do so upon their arrival at UNCC before going to the conference room. Only the names of duly registered participants will be included in the list of participants.

522 citations

01 Dec 2013-
Abstract: The performance of 21 Coupled Model Intercomparison Project Phase 5 (CMIP5) models in the simulation of the Indian Ocean Dipole (IOD) mode is evaluated. Compared to CMIP3, CMIP5 models exhibit a similar spread in IOD intensity. A detailed diagnosis was carried out to understand whether CMIP5 models have shown improvement in their representation of the important dynamical and thermodynamical feedbacks in the tropical Indian Ocean. These include the Bjerknes dynamic air-sea feedback, which includes the equatorial zonal wind response to sea surface temperature (SST) anomaly, the thermocline response to equatorial zonal wind forcing, the ocean subsurface temperature response to the thermocline variations, and the thermodynamic air-sea coupling that includes the wind-evaporation-SST and cloud-radiation-SST feedback. Compared to CMIP3, the CMIP5 ensemble produces a more realistic positive wind-evaporation-SST feedback during the IOD developing phase, while the simulation of Bjerknes dynamic feedback is more unrealistic especially with regard to the wind response to SST forcing and the thermocline response to surface wind forcing. The overall CMIP5 performance in the IOD simulation does not show remarkable improvements compared to CMIP3. It is further noted that the El Nio-Southern Oscillation (ENSO) and IOD amplitudes are closely related, if a model generates a strong ENSO, it is likely that this model also simulates a strong IOD.

66 citations

01 Jan 2016-
TL;DR: The rivers form and process in alluvial channels is universally compatible with any devices to read and is available in the digital library an online access to it is set as public so you can download it instantly.
Abstract: Thank you for downloading rivers form and process in alluvial channels. As you may know, people have search numerous times for their favorite readings like this rivers form and process in alluvial channels, but end up in malicious downloads. Rather than reading a good book with a cup of coffee in the afternoon, instead they juggled with some malicious bugs inside their computer. rivers form and process in alluvial channels is available in our digital library an online access to it is set as public so you can download it instantly. Our digital library saves in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Kindly say, the rivers form and process in alluvial channels is universally compatible with any devices to read.

53 citations

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Author's H-index: 5

No. of papers from the Author in previous years

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Author's top 5 most impactful journals

Applied Geography

1 papers, 7 citations

Theoretical and Applied Climatology

1 papers, 15 citations

Data in Brief

1 papers

Arabian Journal of Geosciences

1 papers, 3 citations