Wavelet and non-parametric statistical based approach for long term land cover trend analysis using time series EVI data. Issue 5 (3rd April 2020)

• Record Type: Journal Article
• Authors: Priyadarshi, Niraj; Chowdary, V. M.; Das, Iswar Chandra; Chockalingam, Jeganathan; Srivastava, Y. K.; Rao, G. Srinivasa; Raj, Uday; Jha, Chandra Shekhar
• Is Part Of: Geocarto international. Volume 35:Issue 5(2020)
• Page Start: 512
• Page End: 534
• Publication Date: 2020-04-03
• Subjects: Land cover change -- EVI -- time series -- Savitzky–Golay filter -- wavelet transform; Remote sensing -- Periodicals; Geographic information systems -- Periodicals; Geology -- Periodicals; Cartography -- Periodicals; 621.3678
• DOI: 10.1080/10106049.2018.1520925
• Languages: English
• ISSNs: 1010-6049

Abstract

Abstract: Land cover change analysis was carried out using Moderate Resolution Imaging Spectroradiometer (MODIS) Enhanced Vegetation Index (EVI) time series data for the period 2005–2014. MODIS EVI data coupled with Quality Assessment Science Data Sets (QASDS) was de-noised with Savitzky–Golay filter while enhancing quality and preserving the temporal profile of EVI. Wavelet transform (WT) based approach along with Sen slope's method was used for land cover change and trend analysis. The WT based approach is useful for studying multiscale and non-stationary processes. Mann–Kendall test was performed to confirm the significance of the identified trends. Proposed approach identified 358 locations as change points, where 285 (79.6%) and 73 (20.4%) locations were detected as 'Change' and 'False Change' with respect to high resolution images. The proposed approach is useful for monitoring land cover changes that provide vital inputs for sustainable management of land resources.