classifying the SAR image (backscattering coefficient) in the
global 25m resolution PALSAR-2/PALSAR SAR mosaic so that strong and
low backscatter pixels are assigned as “forest” and “non-forest”,
respectively. Here, “forest” is defined as the natural forest
with the area larger than 0.5 ha and forest cover over 10%. This
definition is the same as the Food and Agriculture Organization
(FAO) definition. Since the radar backscatter from the forest
depends on the region (climate zone), the classification of
Forest/Non-Forest is conducted by using a region-dependent
threshold of backscatter. The classification accuracy is
checked by using in-situ photos and high-resolution optical
satellite images. Detailed information is available in the provider’s
Dataset Description.
Note:
\n
The global forest/non-forest map (FNF) is generated by
classifying the SAR image (backscattering coefficient) in the
global 25m resolution PALSAR-2/PALSAR SAR mosaic so that strong and
low backscatter pixels are assigned as “forest” and “non-forest”,
respectively. Here, “forest” is defined as the natural forest
with the area larger than 0.5 ha and forest cover over 10%. This
definition is the same as the Food and Agriculture Organization
(FAO) definition. Since the radar backscatter from the forest
depends on the region (climate zone), the classification of
Forest/Non-Forest is conducted by using a region-dependent
threshold of backscatter. The classification accuracy is
checked by using in-situ photos and high-resolution optical
satellite images. Detailed information is available in the provider’s
Dataset Description.
Note:
Name | Description |
---|---|
fnf | Forest/Non-Forest landcover classification |
Providers | |
---|---|
JAXA EORC (producer, licensor) | |
Google Earth Engine (host) | |
STAC Version | 0.6.0 |
Keywords | ALOS, ALOS2, EROC, JAXA, PALSAR, SAR, classification, forest, landcover |
License | proprietary |
Temporal Extent | 12/31/2006, 4:00:00 PM - 12/31/2017, 4:00:00 PM |
Citation | Masanobu Shimada, Takuya Itoh, Takeshi Motooka, Manabu Watanabe, Shiraishi Tomohiro, Rajesh Thapa, and Richard Lucas, "New Global Forest/Non-forest Maps from ALOS PALSAR Data (2007-2010)", Remote Sensing of Environment, 155, pp. 13-31, December 2014. [doi:10.1016/j.rse.2014.04.014.](https://doi.org/10.1016/j.rse.2014.04.014) |
Type | image_collection |
GSD | metersm |