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Mapping plant functional types in Northwest Himalayan foothills of India using random forest algorithm in Google Earth Engine

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Title Mapping plant functional types in Northwest Himalayan foothills of India using random forest algorithm in Google Earth Engine
 
Creator Srinet, R.
Nandy, S.
Padalia, H.
Ghosh, Surajit
Watham, T.
Patel, N. R.
Chauhan, P.
 
Subject forests
highlands
normalized difference vegetation index
ecosystems
time series analysis
moderate resolution imaging spectroradiometer
digital elevation models
climatic factors
mapping
 
Description Plant functional types (PFTs) have been widely used to represent the vegetation characteristics and their interlinkage with the surrounding environment in various earth system models. The present study aims to generate a PFT map for the Northwest Himalayan (NWH) foothills of India using seasonality parameters, topographic conditions, and climatic information from various satellite data and products using Random Forest (RF) algorithm in Google Earth Engine (GEE) platform. The seasonality information was extracted by carrying out a harmonic analysis of Normalized Difference Vegetation Index (NDVI) time-series (2008 to 2018) from Moderate Resolution Imaging Spectroradiometer (MODIS) Terra surface reflectance 8 day 500 m data (MOD09A1). For topographic information, Shuttle Radar Topography Mission (SRTM) digital elevation model (DEM) derived aspect and Multi-Scale Topographic Position Index (MTPI) were used, whereas, for climatic variables, WorldClim V2 Bioclimatic (Bioclim) variables were used. RF, a machine learning classifier, was used to generate a PFT map using these datasets. The overall accuracy of the resulting PFT map was found to be 83.33% with a Kappa coefficient of 0.71. The present study provides an effective approach for PFT classification using different well-established, freely available satellite data and products in the GEE platform. This approach can also be implemented in different ecological settings by using various meaningful variables at varying resolutions.
 
Date 2020-09-16
2021-11-20T09:53:36Z
2021-11-20T09:53:36Z
 
Type Journal Article
 
Identifier Srinet, R.; Nandy, S.; Padalia, H.; Ghosh, Surajit; Watham, T.; Patel, N. R.; Chauhan, P. 2020. Mapping plant functional types in Northwest Himalayan foothills of India using random forest algorithm in Google Earth Engine. International Journal of Remote Sensing, 41(18):7296-7309. [doi: https://doi.org/10.1080/01431161.2020.1766147]
0143-1161
https://hdl.handle.net/10568/116172
https://vlibrary.iwmi.org/pdf/H050791.pdf
https://doi.org/10.1080/01431161.2020.1766147
H050791
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Format 7296-7309
 
Publisher Informa UK Limited
 
Source International Journal of Remote Sensing