VEGETATION DATA Viviana Maggioni Dr. Jeffrey Walker

2nd NAFE Workshop The Vegetation Sampling Regional Sampling 16 vegetation biomass samples at the 8 HI-RES areas (week 1 & 3) 6 vegetation biomass samples per farm every Monday at the same location measurements of NDVI, TIR, LAI at 16 points of the HI-RES areas (once per farm) Farm Scale Sampling 2 vegetation “grab” samplesat NW and SE corners of the HI-RES area N S WE Viviana Maggioni

2nd NAFE Workshop Collected Data Vegetation Dry Biomass Vegetation Water Content Normalized Difference Vegetation Index (NDVI) Thermal Infra Red (TIR) Leaf Area Index (LAI) Viviana Maggioni

2nd NAFE Workshop Objective VWC estimates to remotely sense VWC Literature: T. Jackson et al. (2003) How accurate do we need to know VWC for a given accuracy of Moisture Content of 4%? Viviana Maggioni extreme conditions: 0.8 kg/m ² otherwise: 1 kg/m ² Saturation of the NDVI NIR – SWIR NDWI = NIR + SWIR _____

Pembroke: 80% Barley 20% Native Grass Stanley: Native Grass Illogan: 60% Oats 40% Barley Roscommon: Native Grass Dales: Native Grass Midlothian: 50% Fallow 50% Lucerne Cullingral: 50% Wheat 50% Barley Merriwa Park: Wheat The High Resolution Focus Areas N

2nd NAFE Workshop Dry Biomass (kg/m²): Merriwa Area Viviana Maggioni

2nd NAFE Workshop Dry Biomass (kg/m²): Krui Area Viviana Maggioni

2nd NAFE Workshop Vegetation Water Content (kg/m²): Merriwa Area Viviana Maggioni

2nd NAFE Workshop Vegetation Water Content (kg/m²): Krui Area Viviana Maggioni

2nd NAFE Workshop NIR and RED Viviana Maggioni

2nd NAFE Workshop Normalized Difference Vegetation Index NDVI = NIR - RED NIR + RED Viviana Maggioni

2nd NAFE Workshop TIR and LAI Viviana Maggioni

2nd NAFE Workshop MODIS NDVI Validation Viviana Maggioni

2nd NAFE Workshop NDVI versus TIME Viviana Maggioni

2nd NAFE Workshop NDWI versus TIME Viviana Maggioni NIR – SWIR 1640nm NIR + SWIR 1640nm NDWI 1640 = _______ NIR + SWIR 2130nm NIR - SWIR 2130nm NDWI 2130 =

2nd NAFE Workshop VWC Relationships Native Grass Crop Native Grass Crop Native Grass Crop R-squared RMSE NDVI NDWI 2130 NDWI 1640 Viviana Maggioni

2nd NAFE Workshop Dry Biomass Relationships Native Grass Crop Native Grass Crop Native Grass Crop R-squared RMSE NDVI NDWI 1640 NDWI 2130 Viviana Maggioni

2nd NAFE Workshop VWC & Dry Biomass versus TIME Viviana Maggioni

2nd NAFE Workshop MODIS Data 31 OCT3 NOV2 NOV1 NOV5 NOV 6 NOV11 NOV9 NOV8 NOV7 NOV 13 NOV12 NOV17 NOV16 NOV14 NOV 22 NOV21 NOV19 NOV18 NOV23 NOV Viviana Maggioni

2nd NAFE Workshop How many samples? Viviana Maggioni

2nd NAFE Workshop Next Steps Landcover map Thumbnails of spatial VWC Aircraft NDVI validation Microwave Polarization Difference Index (MPDI) relationship Merriwa Park 3030 Viviana Maggioni

2nd NAFE Workshop Thank you Viviana Maggioni