Classification of catchments for nitrogen using Artificial Neural Network Pattern Recognition and spatial data
Article
Article Title | Classification of catchments for nitrogen using Artificial Neural Network Pattern Recognition and spatial data |
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ERA Journal ID | 3551 |
Article Category | Article |
Authors | O'Sullivan, Cherie M. (Author), Ghahramani, Afshin (Author), Deo, Ravinesh C. (Author), Pembleton, Keith (Author), Khan, Urooj (Author) and Tuteja, Narendra (Author) |
Journal Title | Science of the Total Environment |
Journal Citation | 809, pp. 1-15 |
Article Number | 151139 |
Number of Pages | 15 |
Year | 2022 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0048-9697 |
1879-1026 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.scitotenv.2021.151139 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0048969721062173?via%3Dihub |
Abstract | In hydrological modelling, classification of catchments is a fundamental task for overcoming deficits in observational datasets. Most attention on this issue has focussed on identifying the catchments with similar hydrological responses for streamflow. Yet, effective methods for catchment classification are currently lacking in respect to Dissolved Inorganic Nitrogen (DIN), a water quality constituent that, at increasing concentrations, is threatening nutrient sensitive environment. Pattern recognition, using standard Artificial Neural Network algorithm is applied, as a novel approach to classify datasets that are considered to be suitable proxies for biological and anthropogenic drivers of observed DIN releases. Eleven gauged Great Barrier Reef (GBR) catchments within Queensland Australia are classified using spatial datasets extracted from ecosystem (e.g. original ecosystem responses to biogeographic, land zone, land form, and soil type attributes) and land use maps. To evaluate the performance of the examined spatial datasets as a proxy for deductive classification, the classification process is repeated inductively, using observed DIN and streamflow data from gauging stations. The ANN-PR method is seen to generate the same classification score format for the differing dataset types, and this facilitates a direct comparison for model output for observed data corroborations. The Kruskal-Wallis test for independence, at p > 0.05, identifies the deductive classification approach as a predictor for classification using DIN observations, which lacks an independence from each other at a p value of 0.01 and 0.02. This study concludes that an ANN-PR method can integrate the ecosystem and land use mapping data to deductively classify the GBR catchments into four regions that also have similar patterns of DIN concentrations. Due to the uniform availability of the mapping data, the findings provide a sound basis for further investigations into the transposing of knowledge from gauged catchments to ungauged areas. |
Keywords | water quality, Great Barrier Reef, deductive inductive catchment classification, DIN, artificial intelligence, pattern recognition |
Related Output | |
Is part of | Artificial intelligence informed simulation of dissolved Inorganic Nitrogen from ungauged catchments to the Great Barrier Reef |
ANZSRC Field of Research 2020 | 370701. Contaminant hydrology |
410504. Surface water quality processes and contaminated sediment assessment | |
370704. Surface water hydrology | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
This article is part of a UniSQ Thesis by publication. See Related Output. | |
Byline Affiliations | Centre for Sustainable Agricultural Systems |
School of Sciences | |
Australian Bureau of Meteorology | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6vy4/classification-of-catchments-for-nitrogen-using-artificial-neural-network-pattern-recognition-and-spatial-data
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