Ecological monitoring of wetlands in semi-arid region of Konya closed Basin, Turkey

Springer Science and Business Media LLC - Tập 12 - Trang 133-144 - 2011
Jay Krishna Thakur1,2, P. K. Srivastava3, S. K. Singh4, Zoltán Vekerdy2
1Department Hydrogeology and Environmental Geology, Institute of Geosciences, Martin Luther University, Halle (Saale), Germany
2Faculty of Geo-information Science and Earth Observation, Twente University, Enschede, The Netherlands
3Department of Civil Engineering, Water and Environment Management Research Center, University of Bristol, Bristol, United Kingdom
4Centre of Atmospheric and Ocean Science, KBCAOS, IIDS, University of Allahabad, Allahabad, India

Tóm tắt

Wetland ecosystems are of global significance having productive, regulatory and informative function. These wetlands are crucial for the long-term protection of water sources, as well as the survival of its unique biodiversity. Most of the wetlands of Turkey are now facing serious threat from the anthropogenic sources and now near to the verge of extinction. This study has been carried out to monitor vegetation dynamics and ecological status of wetlands of Koyna basin at spatial and temporal scale. This study has involved MODerate-resolution Imaging Spectroradiometer (MODIS) images of the year 2000, 2004 and 2008 on daily basis with spatial resolution of 1 km. The MODIS 16 days composite NDVI time series products of 250-m spatial resolution from year 2000 to 2008 has been utilized to monitor the ecological status of the wetlands. The European Nature Information System habitat classification map, meteorological data (precipitation, temperature) coupled with field data has been utilized to validate NDVI values of nine habitats in the wetlands. The time series analyses of NDVI data values have been correlated with the groundwater level depth from 1996 to 2004. The overall analysis has shown a declining trend of NDVI over the year 2000 to 2008, indicated a degraded wetland condition in span of 9 years.

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