A multi-temporal remote sensing approach for monitoring changes in spatial extent of freshwater lake of Deepor Beel Ramsar Site, a major wetland of Assam

Deka, Jyotishman; Tripathi, Om Prakash; Khan, Mohammad Latif

doi:10.3126/jowe.v5i0.4696

Cited by 20 publications

(11 citation statements)

References 17 publications

(16 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the recent years, the geospatial tools have became an important breakthrough for tracking such changes in wetland ecosystems [56,57]. Our observation on land cover and ecosystems revealed the dynamic nature of the KTWR.…”

Section: Discussionmentioning

confidence: 96%

“…In many cases the critical ecosystems such as water bodies, marshy land and forested areas are degrading [57,58,60]. Unlike the ecosystems changes in wetland elsewhere, KTWR faces additional challenges from the dynamics of river course change, which is a big management challenge for the authority of this protected area.…”

Section: Discussionmentioning

confidence: 99%

“…Wetland degradation due to human induced disturbances is becoming a common issue in the Himalaya [57][58][59]. In many cases the critical ecosystems such as water bodies, marshy land and forested areas are degrading [57,58,60].…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Linking Spatio-Temporal Land Cover Change to Biodiversity Conservation in the Koshi Tappu Wildlife Reserve, Nepal

et al. 2013

View full text Add to dashboard Cite

Land cover change has been one of the major drivers of change leading to an alteration of critical habitats for many of the threatened species worldwide. Species with a narrow range and specialized habitats such as wetland ecosystems are at higher risk. The present paper describes spatial and temporal land use and cover change over the period of last 34 years in the Koshi Tappu Wildlife Reserve (KTWR), Nepal. High spatial resolution Indian Remote-Sensing Satellite (IRS) Linear Imaging and Self Scanning Sensor (LISS-4) from 2005 and medium spatial resolution Landsat Multispectral Scanner (MSS) from 1976; Thematic Mapper (TM) from 1989; Enhanced Thematic Mapper Plus (ETM+) from 1999 and TM from 2010 were used to generate a land use/land cover map and change analysis. Acquired IRS LISS-4 and Landsat image was orthorectified into Universal Transverse Mercator (UTM), Zone 45 based on generated digital terrain model (DTM) from a topographic map and Ground Control Point (GCP) from the field. After rectifying all the images, eCognition developer software was used for object-based image analysis (OBIA). The change in the land cover and land use types were compared with the potential habitat of twenty globally significant species present in the reserve. The habitat information was collected from the literature and a map was prepared based on 'presence' data, habits and habitats used to identify their distribution pattern. The analysis revealed that the KTWR has gone through significant changes in land cover and ecosystems over the last 34 years due to the change in river course and anthropogenic pressure leading to direct change in habitats of the species. Forests have been reduced by 94% from their original state whereas the grassland has increased by 79% from its original state. On the basis of total land cover, forests, river and stream, swamp and marshes decreased by 16%, OPEN ACCESSDiversity 2013, 5 336 14% and 3% respectively over the last 34 years whereas the grassland has increased by 45%. These ecosystems are also an important habitat for the majority of the species, which is resulting in habitat loss. Notably, the wetland ecosystems (marshes/swamps and river/streams), being one of the most important habitat for many globally threatened species, have changed by more than 30% from their original state in 1976. Based on the analysis, recommendations for management interventions were made.

show abstract

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Linking Spatio-Temporal Land Cover Change to Biodiversity Conservation in the Koshi Tappu Wildlife Reserve, Nepal

et al. 2013

View full text Add to dashboard Cite

show abstract

“…They were also projected into the Universal Transverse Mercator (UTM) zone 30, using the World Geodetic System (WGS) 84 coordinate system (Deka et al . ). The images downloaded were furthermore pro‐processed to correct for any errors still inherent in them.…”

Section: Methodsmentioning

confidence: 97%

“…The process uses the histogram peaks and the pixels values to segregate images (Deka et al . ). Landsat TM and ETM+ band 5 exhibits a strong contrast between land and water features, due to the high degree of absorption of mid‐infrared energy by water, and the strong reflectance of mid‐infrared energy by vegetation and land features Mather ().…”

Section: Methodsmentioning

confidence: 97%

Mapping the spatial changes in Lake Volta using multitemporal remote sensing approach

et al. 2016

View full text Add to dashboard Cite

Lake Volta is the world's largest man-made lake by surface area, and the fourth largest by water volume. Located completely within Ghana, it has a surface area of about 8502 km 2 (3283 square miles). Like many other lakes on the African continent, Lake Volta is a major natural resource for Ghana, storing water for the operation of the hydroelectric dam, water supply for domestic, agricultural and industrial purposes, habitat for diverse aquatic species, an avenue for recreational activities, means of navigation between the north and south parts of the country, and a climate modulator for the tropical region. The lake has experienced variable water level and surface area changes attributable to climate change and excessive water abstractions. Using histogram thresholding techniques, this study produced binary images and vector maps of the lake. Spatial extent mapping of the lake using Landsat TM 1990, ETM + 2000 and ETM + 2007 images indicated the lake experienced both increased and decreased surface area changes during the study period. The lake's surface area varied by about 197 km 2 between 1990 and 2007, with the water level fluctuating between AE7 m. Factors thought to be contributing to these changes include human factors (regulated flows, deforestation, increased water abstractions and pollution) as well as natural phenomenon (climate change, water run-off and subsequent sediment transport).

show abstract

A multi-temporal remote sensing approach for monitoring changes in spatial extent of freshwater lake of Deepor Beel Ramsar Site, a major wetland of Assam

Cited by 20 publications

References 17 publications

Linking Spatio-Temporal Land Cover Change to Biodiversity Conservation in the Koshi Tappu Wildlife Reserve, Nepal

Linking Spatio-Temporal Land Cover Change to Biodiversity Conservation in the Koshi Tappu Wildlife Reserve, Nepal

Mapping the spatial changes in Lake Volta using multitemporal remote sensing approach

Contact Info

Product

Resources

About