Comparison of vegetation indexes in the Sonoran desert incorporating soil and moisture indicators and application to estimates of LAI

Authors

  • Víctor M. Rodríguez-Moreno Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE). Departamento de Geología y División Ciencias de la Tierra. Carretera Ensenada- Tijuana Núm. 3918, 22860. Ensenada, Baja California, México. Tel +52 646 1750500
  • Stephen H. Bullock Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE). Departamento de Geología y División Ciencias de la Tierra. Carretera Ensenada- Tijuana Núm. 3918, 22860. Ensenada, Baja California, México. Tel +52 646 1750500

DOI:

https://doi.org/10.29312/remexca.v4i4.1193

Keywords:

leaf area index, NDII, NDVI, remote sensing, SAVI, topographic correction, TSAVI

Abstract

A multi-temporal comparison was made of four spectral vegetation indexes among 50 sites in a subtropical, coastal arid region. Greenness indexes (NDVI, SAVI and TSAVI) and one of moisture (NDII) were evaluated. NDVI and SAVI were very closely correlated, while TSAVI fluctuated less and NDII showed strong seasonal variations. Topographic correction (illuminated surface) of raw data usually increased the slope of TSAVI’s soil line by >20%. The indexes, except NDII, were used to estimate Leaf Area Index; signal-to-noise analysis of LAI suggested that SAVI is usually close to NDVI but TSAVI has much more signal in the drier months.

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Vol. 4, Núm. 4

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Published

2018-05-09

How to Cite

Rodríguez-Moreno Víctor M., and Stephen H. Bullock. 2018. “Comparison of Vegetation Indexes in the Sonoran Desert Incorporating Soil and Moisture Indicators and Application to Estimates of LAI”. Revista Mexicana De Ciencias Agrícolas 4 (4). México, ME:611-23. https://doi.org/10.29312/remexca.v4i4.1193.

Issue

Vol. 4 No. 4 (2013)

Section

Articles

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