Open Access
16 July 2019 Mapping secondary succession species in agricultural landscape with the use of hyperspectral and airborne laser scanning data
Aleksandra Radecka, Dorota Michalska-Hejduk, Katarzyna Osinska-Skotak, Adam Kania, Konrad Górski, Wojciech Ostrowski
Author Affiliations +
Funded by: Polish National Centre for Research and Development
Abstract

Secondary succession is a process that is often observed taking place in former agricultural ecosystems. Its characteristics are especially important in protected areas, for the purposes of monitoring and protective measures. Effective mapping of succession is facilitated by the development of automated methodologies based on remote sensing data, which are capable of complementing traditional field research. The objective of this work is to determine whether the classification of high-resolution hyperspectral and light detection and ranging (LiDAR) data with the use of the random forest algorithm enables us to produce an accurate succession species map. First, feature extraction techniques are applied to 1-m hyperspectral images and a ∼7  point  /  m2 dense point cloud. Minimum noise fraction layers and vegetation indices are calculated from the hyperspectral data and geometry related indices from the LiDAR data. Finally, the recursive feature elimination algorithm is applied to the combined dataset and the reference polygons to select the optimal set of features for subsequent classification. The results indicate that the proposed methodology has the potential to be used operationally. The final classification product is characterized by a relatively high Cohen’s kappa value of 0.68, with single species classified with various accuracies, expressed by F1 scores ranging from 0.45 to 0.87.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
Aleksandra Radecka, Dorota Michalska-Hejduk, Katarzyna Osinska-Skotak, Adam Kania, Konrad Górski, and Wojciech Ostrowski "Mapping secondary succession species in agricultural landscape with the use of hyperspectral and airborne laser scanning data," Journal of Applied Remote Sensing 13(3), 034502 (16 July 2019). https://doi.org/10.1117/1.JRS.13.034502
Received: 18 January 2019; Accepted: 20 June 2019; Published: 16 July 2019
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Cited by 4 scholarly publications.
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KEYWORDS
Vegetation

Agriculture

LIDAR

Feature selection

Remote sensing

Associative arrays

Data acquisition

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