Google Earth Engine（GEE）——全球农作物生产的耕作方式（1980年至2017年期间50个国家8种主要主食作物的4403个成对产量观测值）

Su, Y., Gabrielle, B. & Makowski, D. A global dataset for crop production under conventional tillage and no tillage systems. figshare https://doi.org/10.6084/m9.figshare.12155553 (2020). v14

Su, Y., Gabrielle, B. & Makowski, D. A global dataset for crop production under conventional tillage and no tillage systems. Scientific Data 8, 33 (2021).

var tillage = ee.FeatureCollection("projects/sat-io/open-datasets/global_tillage_production");


print(tillage.size(),'Total observations')

// Get a color from crop types
var cropColor = ee.Dictionary({
  'maize': '000000',
  'barley.spring': '593704',
  'soybean': 'BC80BD',
  'wheat.winter': '0565A6',
  'cotton': 'E31A1C',
  'sorghum': 'FF7F00',
  'sunflower': '6A3D9A',
  'wheat_spring': '5CA2D1',
});

// List of crop types to add to the map
var crops = ['maize', 'barley.spring', 'soybean', 'wheat.winter', 'cotton', 'sorghum', 'sunflower',
    'wheat_spring'];

function addStyle(pt) {
  var color = cropColor.get(pt.get('crop'));
  return pt.set('styleProperty', ee.Dictionary({'pointSize': 2, 'color': color}));
}

// Make a FeatureCollection out of the crop table
var pp = ee.FeatureCollection(tillage).map(addStyle);
print(pp.first());

/**
 * Adds crop types to the map.
 *
 * @param {string} fuel A fuel type
 */
function addLayer(fuel) {
  print(fuel);
  Map.addLayer(pp.filter(ee.Filter.eq('crop', fuel)).style({styleProperty: 'styleProperty', neighborhood: 50}), {}, fuel, true, 0.65);
}

// Apply `addLayer` to each record in `fuels`
cropColor.keys().getInfo().map(addLayer);