Monitoring aboveground biomass in semiarid grasslands using MODIS images

• NAKANO Tomoko

  Faculty of Economics, Chuo University

• BAVUUDORJ Ganbat

  Institute of Meteorology, Hydrology and Environment

• URIANHAI Nachinshonhor G.

  Graduate School of Environmental and Life Science, Okayama University

• SHINODA Masato

  Arid Land Research Center, Tottori University

Abstract

In the present study, we calculated seven vegetation indices (simple ratio [SR], normalized difference vegetation index [NDVI], enhanced vegetation index [EVI], soil-adjusted vegetation index [SAVI], optimized soil-adjusted vegetation index [OSAVI], land surface water index [LSWI], and greenery ratio [GR]) based on MODIS surface reflectance data and analyzed the relationships between these indices and the aboveground biomass in semiarid grasslands in Mongolia. The measured values of the biomass for the study area ranged from 7.5 to 137.0 g dry weight (dw) m^-2. The results revealed that NDVI, SR, and OSAVI were strongly correlated with the biomass. Among these, NDVI showed the best performance as a proxy of the plant biomass of Mongolian grasslands. The relationships of NDVI and OSAVI with the temporal variation and spatial pattern of biomass were statistically similar, suggesting that a single linear equation was appropriate to derive aboveground biomass values from NDVI or OSAVI.

Journal

• Journal of Agricultural Meteorology

  Journal of Agricultural Meteorology 69 (1), 33-39, 2013

  The Society of Agricultural Meteorology of Japan

Keywords

• Aboveground biomass
• MODIS
• Semiarid grassland
• Vegetation index

Details

• CRID: 1390282679646770304
• NII Article ID: 130004878292
• NII Book ID: AA11530034
• DOI: 10.2480/agrmet.69.1.1
• ISSN: 18810136
• ISSN: 00218588
• NDL BIB ID: 024360927
• Web Site: http://id.ndl.go.jp/bib/024360927
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024360927
• Web Site: https://www.jstage.jst.go.jp/article/agrmet/69/1/69_69.1.1/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed