Google Earth Engine——GEE中无法实现的三个数据集此数据集提供了对热带地区高分辨率卫星监测的访问，主要目的是减少和扭转热带森林的损失，促进应对气候变化，保护生物多样性，促进森林再生

以下三个数据集目前无法找到，可能是因为GEE已经将其删除，或者更新之后没有改集合名称：

projects_planet-nicfi_assets_basemaps_africa

projects_planet-nicfi_assets_basemaps_americas

projects_planet-nicfi_assets_basemaps_asia

This image collection provides access to high-resolution satellite monitoring of the tropics for the primary purpose of reducing and reversing the loss of tropical forests, contributing to combating climate change, conserving biodiversity, contributing to forest regrowth, restoration and enhancement, and facilitating sustainable development, all of which must be Non-Commercial Use.

To learn how to access the Basemaps, follow the sign up instructions here.

NICFI mosaics contain both monthly and biannual collections. (Biannual collections are generated every 6 months.) The type of the mosaic is stored in the image metadata field 'cadence'. Use that field along with the start and end date for each mosaic to find the desired imagery.

Full details about the Basemaps are available in Planet's NICFI Basemap spec.

For more information about NICFI (Norway's International Climate and Forest Initiative) and the NICFI Basemaps, see the FAQ.

In support of NICFI's mission, you can use this data for a number of projects including, but not limited to:

• Advance scientific research about the world's tropical forests and the critical services they provide.
• Implement and improve policies for sustainable forest management and land use in developing tropical forest countries and jurisdictions.
• Increase transparency and accountability in the tropics.
• Protect and improve the rights of indigenous peoples and local communities in tropical forest countries.
• Innovate solutions towards reducing pressure on forests from global commodities and financial markets.

该图像集提供了对热带地区高分辨率卫星监测的访问，主要目的是减少和扭转热带森林的损失，促进应对气候变化，保护生物多样性，促进森林再生、恢复和提高，以及促进可持续发展，所有这些都必须是非商业用途。

要了解如何获取基础地图，请按照这里的注册说明进行。

NICFI的马赛克包含每月和半年的收集。(马赛克的类型被存储在图像元数据字段 "cadence "中。使用该字段以及每个马赛克的开始和结束日期来查找所需的图像。

关于Basemaps的全部细节可以在Planet的NICFI Basemap规格中找到。

更多关于NICFI（挪威国际气候与森林倡议）和NICFI基础地图的信息，请参见FAQ。

为了支持NICFI的使命，你可以将这些数据用于一些项目，包括但不限于。

推动有关世界热带森林及其提供的关键服务的科学研究。

在发展中的热带森林国家和管辖区实施和改进可持续森林管理和土地利用的政策。

增加热带地区的透明度和问责制。

保护和改善热带森林国家的原住民和当地社区的权利。

创新解决方案，减少全球商品和金融市场对森林的压力。

Dataset Availability

2015-12-01T00:00:00 - 2021-06-29T00:00:00

Dataset Provider

Planet

Collection Snippet

ee.ImageCollection("projects/planet-nicfi/assets/basemaps/africa")

Resolution

4.77 meters

Bands Table

影像属性：

无法运行：

var nicfi = ee.ImageCollection('projects/planet-nicfi/assets/basemaps/africa');
// Filter basemaps by date and get the first image from filtered results
var basemap= nicfi.filter(ee.Filter.date('2021-03-01','2021-07-01')).first();
Map.centerObject(basemap, 4)
var vis = {"bands":["R","G","B"],"min":64,"max":5454,"gamma":1.8};
Map.addLayer(basemap, vis, '2021-03 mosaic');
Map.addLayer(
    basemap.normalizedDifference(['N','R']).rename('NDVI'),
    {min:-0.55,max:0.8,palette: [
        '8bc4f9', 'c9995c', 'c7d270','8add60','097210'
    ]}, 'NDVI', false);

var nicfi = ee.ImageCollection('projects/planet-nicfi/assets/basemaps/americas');
// Filter basemaps by date and get the first image from filtered results
var basemap= nicfi.filter(ee.Filter.date('2021-03-01','2021-07-01')).first();
Map.centerObject(basemap, 4)
var vis = {"bands":["R","G","B"],"min":64,"max":5454,"gamma":1.8};
Map.addLayer(basemap, vis, '2021-03 mosaic');
Map.addLayer(
    basemap.normalizedDifference(['N','R']).rename('NDVI'),
    {min:-0.55,max:0.8,palette: [
        '8bc4f9', 'c9995c', 'c7d270','8add60','097210'
    ]}, 'NDVI', false);

var nicfi = ee.ImageCollection('projects/planet-nicfi/assets/basemaps/asia');
// Filter basemaps by date and get the first image from filtered results
var basemap= nicfi.filter(ee.Filter.date('2021-03-01','2021-07-01')).first();
Map.setCenter(107, 10, 4);
var vis = {"bands":["R","G","B"],"min":64,"max":5454,"gamma":1.8};
Map.addLayer(basemap, vis, '2021-03 mosaic');
Map.addLayer(
    basemap.normalizedDifference(['N','R']).rename('NDVI'),
    {min:-0.55,max:0.8,palette: [
        '8bc4f9', 'c9995c', 'c7d270','8add60','097210'
    ]}, 'NDVI', false);