Google Earth Engine (GEE) - the use of inorganic fertilizers (chemical fertilizers for short) for different crops worldwide

Global Fertilizer Use by Crops and Countries
Understanding the use of inorganic fertilizers, or fertilizers for short, by crops at the national, regional, and global levels is an important part of fertilizer consumption analysis and demand forecasting. There is little good information on fertilizer for crop use (FUBC) because it is difficult to collect and time-consuming to process and verify. To fill this gap, in 1992, based on a survey of experts jointly conducted by the Food and Agriculture Organization of the United Nations (FAO), the International Fertilizer Development Center (IFDC) and the International Fertilizer Association (IFA), the first report for the period 1990/1991 was published Global FUBC Report. Since then, similar expert surveys have been conducted and published every two to four years in major fertilizer consuming countries. IFA has led these efforts since 2008, and to our knowledge this remains the only globally available dataset on FUBC. This dataset includes data (in CSV format) from surveys conducted by the IFA, representing the situation in 2017-18, and a collation of all historical FUBC data. Preface – Bed Length Artificial Intelligence Tutorial

Disclaimer: All or part of the dataset descriptions are provided by the authors or their works.

Dataset preprocessing
LSIB country borders are used to join the tables, and since the main table is not geospatial, the country names are first restructured to match those of the LSIB before creating the inner join. Since these are large geometries, connections are converted to the center points of each feature and exported as a feature set.

 

paper citation

Ludemann, C.I., Gruere, A., Heffer, P. et al. Global data on fertilizer use by crop and by country. Sci Data 9, 501 (2022).
https://doi.org/10.1038/s41597-022-01592-z

Data reference:

Ludemann, Cameron; Gruere, Armelle; Heffer, Patrick; Dobermann, Achim (2022), Global data on fertilizer use by crop and by country, Dryad,
Dataset, https://doi.org/10.5061/dryad.2rbnzs7qh

Earth Engine Snippet¶

var LSIB = ee.FeatureCollection("USDOS/LSIB/2017"),
    fertilizer_use_ct = ee.FeatureCollection("projects/sat-io/open-datasets/global_fertilizer_use_centroid");
//Create a filter
var Filter = ee.Filter.equals({
  leftField: 'COUNTRY_NA',
  rightField: 'COUNTRY_NA'
});

var country_join = ee.Join.inner();
var country_join = country_join.apply(LSIB,fertilizer_use_ct,Filter);


function cleanJoin(feature){
  return ee.Feature(feature.get('primary')).copyProperties(feature.get('secondary'));
}

var joined = country_join.map(cleanJoin)
print('Sample fertilizer application', joined.first())

//Break down by year of publication
print('Year of publication',joined.aggregate_histogram('Year_FUBC_publication'))

//Export individual country usage to CSV
var selected = fertilizer_use_ct.filter(ee.Filter.eq('COUNTRY_NA','Canada'))
print('Total features for Country',selected.size())

Export.table.toDrive({
  collection: ee.FeatureCollection(selected),
  description:'fertilizer_country_canada',
  fileFormat: 'CSV'
});

Sample code: https://code.earthengine.google.com/?scriptPath=users/sat-io/awesome-gee-catalog-examples:agriculture-vegetation-forestry/GLOBAL-FERTILIZER-USE-CROP-COUNTRY

License¶

This work is licensed under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication license.

Created by: Ludemann, Cameron; Gruere, Armelle; Heffer, Patrick; Dobermann, Achim

Curated in GEE by : Samapriya Roy

keywords: Global fertilizer use, agriculture, FAO, crop

Last modified: 2022-08-22

Last updated on GEE: 2022-09-05