Rice Yield Estimation Using Landsat ETM+ Data and Field Observation
- I Wayan Nuarsa
- Fumihiko Nishio
- Chiharu Hongo
Abstract
Forecasting rice yield before harvest time is important to supporting planners and decision makers to predict the amount of rice that should be imported or exported and to enable governments to put in place strategic contingency plans for the redistribution of food during times of famine. This study used the Normalized Difference Vegetation Index (NDVI) of Landsat Enhanced Thematic Mapper plus (ETM+) images of rice plants to estimate rice yield based on field observation. The result showed that the rice yield could be estimated using the exponential equation of y = 0.3419e4.1587x, where y and x are rice yield and NDVI, respectively. The R2 and SE of the estimation were 0.852 and 0.077 ton/ha, respectively. An accuracy assessment of rice yield estimation using Landsat images was performed by comparing the rice yields from the estimation result and the reference data. The results show that the linear relationship with the R2 and SE of the estimation were 0.9262 and 0.21 ton/ha, respectively. The R2 is greater than or equal to 0.8, which demonstrates a strong agreement between the remotely sensed estimation and the reference data. Thus, the Landsat ETM+ has good potential for application to rice yield estimation.
- Full Text:
PDF
- DOI:10.5539/jas.v4n3p45
Journal Metrics
The data was calculated based on Google Scholar Citations.
- h-index (December 2021): 67
- i10-index (December 2021): 700
- h5-index (December 2021): 20
- h5-median (December 2021): 28
Index
- ACNP
- AGRICOLA
- AGRIS
- BASE (Bielefeld Academic Search Engine)
- CAB Abstracts
- CiteFactor
- CNKI Scholar
- CrossRef
- DESY Publication Database
- DTU Findit (DTU Library)
- EBSCOhost
- Elektronische Zeitschriftenbibliothek (EZB)
- Excellence in Research for Australia (ERA)
- FindIt@Bham (UoB Library)
- Genamics JournalSeek
- Google Scholar
- HOLLIS (Harvard Library)
- Index Copernicus
- Infotrieve (Copyright Clearance Center)
- Jisc Library Hub Discover
- JournalTOCs
- Library of Congress
- LIVIVO (ZB MED)
- LOCKSS
- LSE Library
- Max Planck Institutes
- Mendeley
- MIAR
- Mir@bel
- Norwegian Centre for Research Data (NSD)
- OAJI
- Open J-Gate
- OskiCat (UCB Library)
- PKP Open Archives Harvester
- Publons
- Qualis/CAPES
- ROAD
- Scilit
- SHERPA/RoMEO
- Southwest-German Union Catalogue
- Standard Periodical Directory
- Stanford Libraries
- StarPlus (UoS Library)
- Technische Informationsbibliothek (TIB)
- Trove
- UCR Library
- Ulrich's
- UniCat
- Universe Digital Library
- University Library (USask)
- WorldCat
- WorldWideScience
- WRLC Catalog
- Zeitschriften daten bank (ZDB)
Contact
- Anne BrownEditorial Assistant
- jas@ccsenet.org