Climate-Resilient Grazing in the Pastures of Queensland: An Integrated Remotely Piloted Aircraft System and Satellite-Based Deep-Learning Method for Estimating Pasture Yield
The aim of this research is to expand recent developments in the mapping of pasture yield with remotely piloted aircraft systems to that of satellite-borne imagery. To date, spatially explicit and accurate information of the pasture resource base is needed for improved climate-adapted livestock rang...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | AgriEngineering |
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| Online Access: | https://www.mdpi.com/2624-7402/3/3/44 |
| _version_ | 1797520584578433024 |
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| author | Jason Barnetson Stuart Phinn Peter Scarth |
| author_facet | Jason Barnetson Stuart Phinn Peter Scarth |
| author_sort | Jason Barnetson |
| collection | DOAJ |
| description | The aim of this research is to expand recent developments in the mapping of pasture yield with remotely piloted aircraft systems to that of satellite-borne imagery. To date, spatially explicit and accurate information of the pasture resource base is needed for improved climate-adapted livestock rangeland grazing. This study developed deep learning predictive models of pasture yield, as total standing dry matter in tonnes per hectare (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>T</mi><mi>S</mi><mi>D</mi><mi>M</mi></mrow></semantics></math></inline-formula> (tha<sup>−1</sup>)), from field measurements and both remotely piloted aircraft systems and satellite imagery. Repeated remotely piloted aircraft system structure measurements derived from structure from motion photogrammetry provided measures of pasture biomass from many overlapping high-resolution images. These measurements were taken throughout a growing season and were modelled with persistent photosynthetic pasture responses from various Planet Dove high spatial resolution satellite image-derived vegetation indices. Pasture height modelling as an input to the modelling of yield was assessed against terrestrial laser scanning and reported correlation coefficients (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>R</mi><mn>2</mn></msup></semantics></math></inline-formula>) from 0.3 to 0.8 for both a coastal grassland and inland woodland pasture. Accuracy of the predictive modelling from both the remotely piloted aircraft system and the Planet Dove satellite image estimates of pasture yield ranged from 0.8 to 1.8 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>T</mi><mi>S</mi><mi>D</mi><mi>M</mi></mrow></semantics></math></inline-formula> (tha<sup>−1</sup>). These results indicated that the practical application of repeated remotely piloted aircraft system derived measures of pasture yield can, with some limitations, be scaled-up to satellite-borne imagery to provide more temporally and spatially explicit measures of the pasture resource base. |
| first_indexed | 2024-03-10T07:58:49Z |
| format | Article |
| id | doaj.art-272fc03c7e2c467ebfde487e56a5195d |
| institution | Directory Open Access Journal |
| issn | 2624-7402 |
| language | English |
| last_indexed | 2024-03-10T07:58:49Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | AgriEngineering |
| spelling | doaj.art-272fc03c7e2c467ebfde487e56a5195d2023-11-22T11:36:36ZengMDPI AGAgriEngineering2624-74022021-09-013368170210.3390/agriengineering3030044Climate-Resilient Grazing in the Pastures of Queensland: An Integrated Remotely Piloted Aircraft System and Satellite-Based Deep-Learning Method for Estimating Pasture YieldJason Barnetson0Stuart Phinn1Peter Scarth2Joint Remote Sensing Research Centre, University of Queensland, St Lucia, Brisbane, QLD 4072, AustraliaJoint Remote Sensing Research Centre, University of Queensland, St Lucia, Brisbane, QLD 4072, AustraliaJoint Remote Sensing Research Centre, University of Queensland, St Lucia, Brisbane, QLD 4072, AustraliaThe aim of this research is to expand recent developments in the mapping of pasture yield with remotely piloted aircraft systems to that of satellite-borne imagery. To date, spatially explicit and accurate information of the pasture resource base is needed for improved climate-adapted livestock rangeland grazing. This study developed deep learning predictive models of pasture yield, as total standing dry matter in tonnes per hectare (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>T</mi><mi>S</mi><mi>D</mi><mi>M</mi></mrow></semantics></math></inline-formula> (tha<sup>−1</sup>)), from field measurements and both remotely piloted aircraft systems and satellite imagery. Repeated remotely piloted aircraft system structure measurements derived from structure from motion photogrammetry provided measures of pasture biomass from many overlapping high-resolution images. These measurements were taken throughout a growing season and were modelled with persistent photosynthetic pasture responses from various Planet Dove high spatial resolution satellite image-derived vegetation indices. Pasture height modelling as an input to the modelling of yield was assessed against terrestrial laser scanning and reported correlation coefficients (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>R</mi><mn>2</mn></msup></semantics></math></inline-formula>) from 0.3 to 0.8 for both a coastal grassland and inland woodland pasture. Accuracy of the predictive modelling from both the remotely piloted aircraft system and the Planet Dove satellite image estimates of pasture yield ranged from 0.8 to 1.8 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>T</mi><mi>S</mi><mi>D</mi><mi>M</mi></mrow></semantics></math></inline-formula> (tha<sup>−1</sup>). These results indicated that the practical application of repeated remotely piloted aircraft system derived measures of pasture yield can, with some limitations, be scaled-up to satellite-borne imagery to provide more temporally and spatially explicit measures of the pasture resource base.https://www.mdpi.com/2624-7402/3/3/44remotely piloted aircraft systemstructure from motionphotogrammetryartificial neural networksdeep-learning |
| spellingShingle | Jason Barnetson Stuart Phinn Peter Scarth Climate-Resilient Grazing in the Pastures of Queensland: An Integrated Remotely Piloted Aircraft System and Satellite-Based Deep-Learning Method for Estimating Pasture Yield AgriEngineering remotely piloted aircraft system structure from motion photogrammetry artificial neural networks deep-learning |
| title | Climate-Resilient Grazing in the Pastures of Queensland: An Integrated Remotely Piloted Aircraft System and Satellite-Based Deep-Learning Method for Estimating Pasture Yield |
| title_full | Climate-Resilient Grazing in the Pastures of Queensland: An Integrated Remotely Piloted Aircraft System and Satellite-Based Deep-Learning Method for Estimating Pasture Yield |
| title_fullStr | Climate-Resilient Grazing in the Pastures of Queensland: An Integrated Remotely Piloted Aircraft System and Satellite-Based Deep-Learning Method for Estimating Pasture Yield |
| title_full_unstemmed | Climate-Resilient Grazing in the Pastures of Queensland: An Integrated Remotely Piloted Aircraft System and Satellite-Based Deep-Learning Method for Estimating Pasture Yield |
| title_short | Climate-Resilient Grazing in the Pastures of Queensland: An Integrated Remotely Piloted Aircraft System and Satellite-Based Deep-Learning Method for Estimating Pasture Yield |
| title_sort | climate resilient grazing in the pastures of queensland an integrated remotely piloted aircraft system and satellite based deep learning method for estimating pasture yield |
| topic | remotely piloted aircraft system structure from motion photogrammetry artificial neural networks deep-learning |
| url | https://www.mdpi.com/2624-7402/3/3/44 |
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