グローバルな森林/非森林マップ（FNF）は、25 m 解像度のグローバル PALSAR-2/PALSAR SAR モザイク内の SAR 画像（後方散乱係数）を分類して生成されます。これにより、強い後方散乱ピクセルと低い後方散乱ピクセルがそれぞれ「森林」と「非森林」として割り当てられます。ここでの「森林」とは、次のような自然の森林を指します。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis collection provides global 25m resolution PALSAR-2/PALSAR mosaics, including forest/non-forest classifications and yearly SAR mosaics.\u003c/p\u003e\n"],["\u003cp\u003eForest/non-forest maps are available in both 3-class (Global 3-class PALSAR-2/PALSAR Forest/Non-Forest Map) and 4-class (Global 4-class PALSAR-2/PALSAR Forest/Non-Forest Map) versions, classifying areas as forest or non-forest based on backscatter intensity.\u003c/p\u003e\n"],["\u003cp\u003eTwo versions of yearly mosaics are available: version 1 (Global PALSAR-2/PALSAR Yearly Mosaic, version 1) and an updated version 2 (Global PALSAR-2/PALSAR Yearly Mosaic, version 2) with data for 2015-2021, created by mosaicking strips of SAR imagery selected for minimum cloud and snow cover.\u003c/p\u003e\n"],["\u003cp\u003e"Forest" in these datasets is defined as natural forest with tree crown cover greater than 10% and tree height exceeding 5 meters.\u003c/p\u003e\n"]]],[],null,[]]
