Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/58203
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Wu, Dan | en |
dc.contributor.author | Phinn, Stuart | en |
dc.contributor.author | Johansen, Kasper | en |
dc.contributor.author | Robson, Andrew | en |
dc.contributor.author | Muir, Jasmine | en |
dc.contributor.author | Searle, Christopher | en |
dc.date.accessioned | 2024-04-09T00:47:12Z | - |
dc.date.available | 2024-04-09T00:47:12Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Remote Sensing, 10(11), p. 1-17 | en |
dc.identifier.issn | 2072-4292 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/58203 | - |
dc.description.abstract | <p>Vegetation metrics, such as leaf area (LA), leaf area density (LAD), and vertical leaf area profile, are essential measures of tree-scale biophysical processes associated with photosynthetic capacity, and canopy geometry. However, there are limited published investigations of their use for horticultural tree crops. This study evaluated the ability of light detection and ranging (LiDAR) for measuring LA, LAD, and vertical leaf area profile across two mango, macadamia and avocado trees using discrete return data from a RIEGL VZ-400 Terrestrial Laser Scanning (TLS) system. These data were collected multiple times for individual trees to align with key growth stages, essential management practices, and following a severe storm. The first return of each laser pulse was extracted for each individual tree and classified as foliage or wood based on TLS point cloud geometry. LAD at a side length of 25 cm voxels, LA at the canopy level and vertical leaf area profile were calculated to analyse tree crown changes. These changes included: (1) pre-pruning vs. post-pruning for mango trees" (2) pre-pruning vs. post-pruning for macadamia trees" (3) pre-storm vs. post-storm for macadamia trees" and (4) tree leaf growth over a year for two young avocado trees. Decreases of 34.13 m<sup>2</sup> and 8.34 m<sup>2</sup> in LA of mango tree crowns occurred due to pruning. Pruning for the high vigour mango tree was mostly identified between 1.25 m and 3 m. Decreases of 38.03 m<sup>2</sup> and 16.91 m<sup>2</sup> in LA of a healthy and unhealthy macadamia tree occurred due to pruning. After flowering and spring flush of the same macadamia trees, storm effects caused a 9.65 m<sup>2</sup> decrease in LA for the unhealthy tree, while an increase of 34.19 m<sup>2</sup> occurred for the healthy tree. The tree height increased from 11.13 m to 11.66 m, and leaf loss was mainly observed between 1.5 m and 4.5 m for the unhealthy macadamia tree. Annual increases in LA of 82.59 m<sup>2</sup> and 59.97 m<sup>2</sup> were observed for two three-year-old avocado trees. Our results show that TLS is a useful tool to quantify changes in the LA, LAD, and vertical leaf area profiles of horticultural trees over time, which can be used as a general indicator of tree health, as well as assist growers with improved pruning, irrigation, and fertilisation application decisions.</p> | en |
dc.language | en | en |
dc.publisher | MDPI AG | en |
dc.relation.ispartof | Remote Sensing | en |
dc.rights | Attribution 4.0 International | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.title | Estimating Changes in Leaf Area, Leaf Area Density, and Vertical Leaf Area Profile for Mango, Avocado, and Macadamia Tree Crowns Using Terrestrial Laser Scanning | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.3390/rs10111750 | en |
local.contributor.firstname | Dan | en |
local.contributor.firstname | Stuart | en |
local.contributor.firstname | Kasper | en |
local.contributor.firstname | Andrew | en |
local.contributor.firstname | Jasmine | en |
local.contributor.firstname | Christopher | en |
local.profile.school | School of Science and Technology | en |
local.profile.school | School of Science and Technology | en |
local.profile.email | arobson7@une.edu.au | en |
local.profile.email | jmuir6@une.edu.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.publisher.place | Switzerland | en |
local.identifier.runningnumber | 1750 | en |
local.format.startpage | 1 | en |
local.format.endpage | 17 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 10 | en |
local.identifier.issue | 11 | en |
local.access.fulltext | Yes | en |
local.contributor.lastname | Wu | en |
local.contributor.lastname | Phinn | en |
local.contributor.lastname | Johansen | en |
local.contributor.lastname | Robson | en |
local.contributor.lastname | Muir | en |
local.contributor.lastname | Searle | en |
dc.identifier.staff | une-id:arobson7 | en |
dc.identifier.staff | une-id:jmuir6 | en |
local.profile.orcid | 0000-0001-5762-8980 | en |
local.profile.orcid | 0000-0001-6114-0670 | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:1959.11/58203 | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Estimating Changes in Leaf Area, Leaf Area Density, and Vertical Leaf Area Profile for Mango, Avocado, and Macadamia Tree Crowns Using Terrestrial Laser Scanning | en |
local.relation.fundingsourcenote | This research was funded by Department of Agriculture and Water Resources, Australian Government as part of its Rural R&D for Profit Program's subproject "Multi-Scale Monitoring Tools for Managing Australia Tree Crops—Industry Meets Innovation". | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.search.author | Wu, Dan | en |
local.search.author | Phinn, Stuart | en |
local.search.author | Johansen, Kasper | en |
local.search.author | Robson, Andrew | en |
local.search.author | Muir, Jasmine | en |
local.search.author | Searle, Christopher | en |
local.open.fileurl | https://rune.une.edu.au/web/retrieve/77b3050f-fad5-4bbb-802c-a3f0b4cac926 | en |
local.uneassociation | Yes | en |
local.atsiresearch | No | en |
local.sensitive.cultural | No | en |
local.year.published | 2018 | en |
local.fileurl.open | https://rune.une.edu.au/web/retrieve/77b3050f-fad5-4bbb-802c-a3f0b4cac926 | en |
local.fileurl.openpublished | https://rune.une.edu.au/web/retrieve/77b3050f-fad5-4bbb-802c-a3f0b4cac926 | en |
local.subject.for2020 | 3002 Agriculture, land and farm management | en |
local.subject.seo2020 | tbd | en |
local.profile.affiliationtype | External Affiliation | en |
local.profile.affiliationtype | External Affiliation | en |
local.profile.affiliationtype | External Affiliation | en |
local.profile.affiliationtype | UNE Affiliation | en |
local.profile.affiliationtype | UNE Affiliation | en |
local.profile.affiliationtype | External Affiliation | en |
Appears in Collections: | Journal Article School of Science and Technology |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
openpublished/EstimatingRobsonMuir2018JournalArticle.pdf | Published version | 9.35 MB | Adobe PDF Download Adobe | View/Open |
SCOPUSTM
Citations
29
checked on Jul 6, 2024
This item is licensed under a Creative Commons License