Assessment of the land use/land cover (LU/LC) and mangrove changes along the Mandovi–Zuari Estuarine complex of Goa, India
IR@NIO: CSIR-National Institute Of Oceanography, Goa
View Archive Info| Field | Value | |
| Creator |
Misra, A.
ManiMurali, R. Vethamony, P. |
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| Date |
2015-02-17T05:16:55Z
2015-02-17T05:16:55Z 2015 |
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| Identifier |
Arabian Journal of Geosciences, vol.8; 267-279
http://drs.nio.org/drs/handle/2264/4697 |
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| Description |
Land use/land cover change dynamics along the estuarine complex of Mandovi–Zuari in the coastal state of Goa, India is studied by the application of multi-temporal remote sensing data. This tropical estuarine region has faced significant changes in the last few decades due to diverse pressures from various sectors, mainly of anthropogenic origin. Spatial and temporal changes in the LU/LC classes have been evaluated using satellite datasets from Landsat MSS, TM and IRS-LISS III for the years 1973, 1989, 2001 and 2011. Considering a spectrally heterogeneous landscape of the region, the LU/LC changes are identified by using principal component analysis (PCA) as a pre-classification step, followed by the implementation of a combination of supervised and unsupervised classification called hybrid classification. The application of PCA has proved to be suitable to successfully identify discrete land surface classes for this study area. An overall accuracy of 95.56 % (kappa=0.9556), 92.93 % (kappa=0.92), 84.64 % (kappa=0.85) and 86.36 % (kappa=0.85) has been obtained for the year 2011, 2001, 1989 and 1973, respectively. The study reveals a gradual increase in built-up area due to urbanization corresponding to a decrease in agricultural land and a considerable loss in beach area. Changes in the mangroves are also assessed within this extent as Goa has significant pockets of mangroves which are located mainly along the estuarine complexes of Mandovi and Zuari (along with the Cumbarjua canal complex). The results highlight an increase in mangrove coverage within the study extent by 1,585.8 ha from 1973 to 2011. The mangrove areal extent along Mandovi has increased from 149.45 to 1,059.77 ha and from 142.95 to 676.12 ha along Zuari (including Cumbarjua canal). Increasing awareness and the steps taken by the forest department to provide suitable environment for the growth of mangroves are the main reasons for this increment
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| Language |
en
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| Publisher |
Springer
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| Rights |
An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2013] Saudi Society for Geosciences.
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| Subject |
Hybrids
classification mangroves remote sensing |
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| Title |
Assessment of the land use/land cover (LU/LC) and mangrove changes along the Mandovi–Zuari Estuarine complex of Goa, India
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| Type |
Journal Article
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