R. Akila1, M. Ashique1, K. Baladeepa1, M. Balapreethi1 and J. Ramachandran*2
Nammazhvar College of Agriculture and Technology,
Peraiyur, Kamuthy, Ramanathapuram – 623708
Received-02.10.2020, Revised-23.10.2020
Abstract: The objective of this paper is to estimate three vegetation indexes forAnaiyur catchment of Kamuthytaluk, Ramanathapuram District,Tamil Nadu. The indexes estimated were Normalized Difference Vegetation Index (NDVI), Soil Adjusted Vegetation Index (SAVI), and Leaf Area Index (LAI). Landsat 8 satellite images with Operational Land Imager(OLI) Sensor and Thermal Infrared Sensor (TRIS) was used. Two Landsat Image of April 2017 and August 2019 belonging two different seasons was downloaded from the USGS website and used in calculation of the three indexes.The Normalized Difference Vegetation Index of Anaiyur Catchment for April, 2017 varies between 0.001 and 0.42 and for August, 2019 varies between 0.04 and 0.48. The Leaf Area Index of Anaiyur Catchment for April, 2017 ranges from -0.40 to 1.89 and for August, 2019 ranges from 0.27 to 2.82. The predicted value of Soil Adjusted Vegetation Index of AnaiyurCatchment for April, 2017 ranges from 0.002 to 0.63 and for August, 2019 ranges from 0.068 to 0.72.These vegetation attributes can be used in various study related to surface albedo, photosynthesis, carbon budgets, water balance, rainwater harvesting potential and related processes.
Keywords: Landsat Image, Remote Sensing, Vegetation Indexes
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