Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Estimating mineral content of indigenous browse species using laboratory spectroscopy and Sentinel-2 imagery
Dissertation (MSc)--University of Pretoria, 2018.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2019
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613525529067520 |
|---|---|
| access_status_str | Open Access |
| author2 | Cho, M.A. |
| author_browse | Cho, M.A. |
| author_facet | Cho, M.A. |
| collection | Thesis |
| dc_rights_str_mv | © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 2018. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/70579 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:32.074Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/70579 Estimating mineral content of indigenous browse species using laboratory spectroscopy and Sentinel-2 imagery Cho, M.A. gmbhokane@gmail.com Chirwa, Paxie W. Gama, Michael Jabulani UCTD Dissertation (MSc)--University of Pretoria, 2018. Understanding variation in the foliar nutrient among indigenous species of the bushveld is crucial for rural livelihoods, in particular the integration of trees into agroecosystems. The study explored nutrient composition of common browse species with regard to nitrogen (N), phosphorus (P), potassium (K) and calcium (Ca) using leaf spectra (400–2500nm) and chemical data collected from nine bushveld species, along with partial least squares (PLS) analysis. The work further explored the relationship between canopy reflectance of Sentinel-2 image and foliar properties of the identified species. Spectroscopic analysis reveals useful information about nitrogen at leaf and canopy scales whereas modelling reflectance using satellite image did not yield satisfactory results. At the leaf level, nitrogen was highly correlated with leaf spectral reflectance (R2=0.72, p<0.05) for winter and (R2=0.88, p<0.05) for summer. The coefficient of determination for the relationships between leaf reflectance and concentrations of phosphorus, potassium and calcium were low. Modelling the relationship using Sentinel-2 data also showed higher correlations (R2=0.44, p<0.05) for nitrogen compared with the other nutrients investigated. Plant Production and Soil Science MSc Unrestricted 2019-07-08T09:46:55Z 2019-07-08T09:46:55Z 2019/04/24 2018 Dissertation Gama, MJ 2018, Estimating mineral content of indigenous browse species using laboratory spectroscopy and Sentinel-2 imagery, MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/70579> A2019 http://hdl.handle.net/2263/70579 en © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Estimating mineral content of indigenous browse species using laboratory spectroscopy and Sentinel-2 imagery |
| title | Estimating mineral content of indigenous browse species using laboratory spectroscopy and Sentinel-2 imagery |
| title_full | Estimating mineral content of indigenous browse species using laboratory spectroscopy and Sentinel-2 imagery |
| title_fullStr | Estimating mineral content of indigenous browse species using laboratory spectroscopy and Sentinel-2 imagery |
| title_full_unstemmed | Estimating mineral content of indigenous browse species using laboratory spectroscopy and Sentinel-2 imagery |
| title_short | Estimating mineral content of indigenous browse species using laboratory spectroscopy and Sentinel-2 imagery |
| title_sort | estimating mineral content of indigenous browse species using laboratory spectroscopy and sentinel 2 imagery |
| topic | UCTD |
| url | http://hdl.handle.net/2263/70579 |