Overview
Crop identification and Crop Area Estimation: Developing methods for crop identification and crop area estimation from HR. 2 maps/ year (winter/summer).
Crop biophysical variables: Estimation of Biophysical variables (LAI, FAPAR, cover fraction). Seasonal monitoring of selected crops (continuous acquisitions). Intensive campaigns (multitemporal) and up-scaling with high resolution imagery.
Mapping biophysical variables from EO data, either from empirical relationship or physically-based methods.
Project Objectives
Estimating Crop Area
Operational Implementation Plan
Field size measurement
Measuring Phenological Events
Phenological Events
- Seeding
- Seedling
- Vegetative Growth
- Flowering
- Fruit Development
- Maturity
- Harvest
Estimation of Biophysical Variables
Operational Implementation Plan
Biophysical Variables
- fAPAR (Fraction of Absorbed Photosynthetically Active Radiation)
- LAI (Leaf Area Index)
- Biomass
- LAIeff
- FCOVER
Site Description
| Landscape Topography | flat morphology and large uniform land?use units |
|---|---|
| Typical Field Size | 15 and 100 hectares |
| Climatic Zone | Subtropics, warm/ mod cool |
| Major Crops and Calendars | Wheat (Normal): Garlic (Normal): Alfalfa (Normal): Maize: |
| Soil Type & Texture | Inorganic:
|
| Soil Drainage Class | ["Moderately well drained"] |
| Irrigation Infrastructure | ["Sprinkler irrigation","Center pivot irrigation"] |
| Other Site Details |
In Situ Observations
Phenological variables
- Crop Type(s):
- Collection Protocol:
Since there are two growing seasons, winter and summer, two sampling were conducted, one on 29th March, 2016 and the other on 12th July, 2016, with 92 and 146 crop type plots identified respectively.
- Frequency: twice a year
Biophysical variables
- Crop Type(s):
- Collection Protocol:
In March 2016, biophysical variables (LAI, LAIeff, FAPAR and FCOVER) were measured in 24 Elementary Sampling Units (ESUs) (Fig.3) using digital hemispherical photographs (DHP). Afterwards, the obtained data was processed with the CAN?EYE software to provide LAI, LAIeff, FAPAR and FCOVER. In July, 51 ESUs were sampled (Fig.3), using DHP and including measurements with LAI 2200C plant canopy analizer and Accupar LP80 devices. These devices were used to measure LAIeff: DHP, AccuparLP80-Ceptometer and LAI 2200C, meanwhile LAI was measured by DHP, FAPAR was measured by DHP and AccuparLP80 and FCOVER was estimated by DHP. Figure 4 shows digital hemispheric photographs acquired at Las Tiesas-Barrax site during the field campaign carried out in July, 2016.
- Frequency: