Senegal-Bambey

Overview

Project Objectives

  • Crop identification and crop acreage estimation: millet, groundnuts and maize
    • New sub-objectives: Crops and trees temporal evolution since 1968
  • Crop Condition/Stress
  • Soil moisture: Joor and Deck soils
  • Other: Delineation and identification of trees and shrubby vegetation.

Project Objectives

Mapping Agricultural Areas

Operational Implementation Plan

Scale

Land Cover
  • Spatial Resolution:
  • Temporal Resolution:

Estimating Crop Conditions

Operational Implementation Plan

Crop Conditions
  • Biological Stress

Estimation of Biophysical Variables

Operational Implementation Plan

Vegetation field data collected in Bambey study area and used for satellite image processing was as follows.Table 1   Vegetation Field Data Collected in Bambey Study AreaFor each culture and trees, we collected geographic information with the GPS, the types, the species and the states of the culture or tree (Figure 1). Weekly rainfall data from 2013 to 2015 was collected by the ISRA/CNRA Bambey Institute.Figure 1 Pléiades Image Showing Different Tree Species in Bambey Study Area  Plans for Next Growing SeasonTo build on these first results in the near future, and especially to improve identification of trees, we plan to use satellite images with a richness of bands and a high revisit time, such as the Sentinel-2 sensors which have 13 spectral bands during the dry season when trees are leafy.

Biophysical Variables
  • Biomass

Forecasting Agricultural Variables

Operational Implementation Plan

Agricultural Variables (large scale)
  • Temporal Change

Site Description

Landscape TopographyLow slope, 30 m mean elevation
Typical Field SizeAround 200m2
Climatic ZoneSubtropics, warm/ mod cool
Major Crops and Calendars

Millets (Normal):
Calendar: July - October
Typical Rotation: Millet and Groundnuts

Groundnuts (Normal):
Calendar: July - October
Typical Rotation: Millet and Groundnuts

Maize (Normal):
Calendar: July - October

Soil Type & Texture

Inorganic:

  • Sand
Soil Drainage Class["Very poorly drained"]
Irrigation Infrastructure["No irrigation (precipitation)"]
Other Site Details

Low level mechanization dominated by drought animal and manual labour

Figure 1: Land cover map of Bambey study area

In Situ Observations

species, size, density, height, phenoloical activity, geolocation

  • Crop Type(s):
  • Collection Protocol:

    Field surveys were conducted during February 2013, 2014 during the dry season when trees are leafy, and in September 2014 corresponding to the crop growing season

  • Frequency:

EO Data

Optical Data Requirements

  • Approximate Start Date of Acquisition: 01/07
  • Approximate End Date of Acquisition: 30/09
  • Spatial resolution: High resolution (5-20m)Very high resolution (below 5m)
  • temporal_frequency: Monthly
  • Level of Expertise: Intermediate
  • Latency of Data Delivery:
  • Challanges:

    • SAR Data Requirements

  • Approximate Start Date of Acquisition: 01/07
  • Approximate End Date of Acquisition: 30/11
  • Spatial resolution: Very high resolution (below 5m)
  • temporal_frequency: Monthly
  • Frequency: X
  • Incidence Angle: ShallowMedium
  • Polarisation:
  • Level of Processing: Level 2
  • Orbit: Any
  • Level of Expertise: Intermediate
  • Latency of Data Delivery: 2-5 days
  • Challanges:

    • Passive Microwave Data Requirements

    Thermal Data Requirements

    Results

    Documents and Files

    Links to paper

    Project Reports

    Study Team

    Team Leader

  • Name: Valerie Soti
  • Affiliation: Centre de coopération internationale en recherche agronomique pour le développement
  • Affiliation Webpage: https://www.cirad.fr
  • Position:
  • Email: valerie.soti@cirad.fr
  • Personal Webpage:
  • Phone number:
  • Postal Address:

    • Other Team Members

  • Name: Agnès Bégué
  • Affiliation: Maison de la Télédetection
  • Affiliation Webpage: https://www.teledetection.fr/
  • Position:
  • Email: agnes.begue@teledetection.fr
  • Personal Webpage:
  • Role: Co-Lead