地理情報データを用いた現存植生推定図の作成とその精度評価  [in Japanese] Creation and accuracy evaluation of a predictive map of actual vegetation using GIS data  [in Japanese]

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Author(s)

Abstract

効率的かつ正確な現存植生の推定図化を目的として,データ処理方法の検討と作成した図の精度評価を行った.事例研究地は,ブナクラス域とヤブツバキクラス域上部の自然植生と代償植生が分布する鳥取県と兵庫県の県境域に位置する6 km×6 kmの正方形の領域とした.衛星データから作成した土地被覆分類図と,標高,斜面形状,累積日射量,最大積雪深等のGISデータから作成した潜在自然植生推定図をオーバーレイして現存植生推定図を作成した.作成した図の精度評価のためκ係数を算出したところ,現存植生推定図はκ係数精度が0.21以上となる範囲が,図化対象域の89%を占めた.こうした領域では推定結果と現地確認した植物群落分布との対応が比較的良く,一定の図化精度で現存植生推定図を作成することができた.

With the aim of conducting efficient and accurate predictive mapping of actual vegetation, we set out to examine the data processing methods and to evaluate the accuracy of created maps. The study area contained natural vegetation and substitutional vegetation in a Fagetea-crenatae region and upper Camellietea-japonicae region distributed within a 6 km by 6 km square region on the border between Tottori and Hyogo Prefectures in Japan. A land cover map generated from satellite data and a predictive map of potential natural vegetation produced from GIS data - including elevation, landform, accumulated amount of solar radiation, and maximum snow depth data - were overlaid to create a predictive map of actual vegetation. The kappa coefficient accuracy was calculated in order to evaluate the accuracy of the predictive map of actual vegetation. Results indicated that 89% of the mapped target region had a kappa coefficient accuracy of over 0.21. Taken together, these results indicated a relatively good correspondence between the predicted results and actual onsite confirmation of distribution of vegetation in the mapped area. Within a certain degree of mapping accuracy, a predictive map of actual vegetation was successfully created.

Journal

  • Landscape Ecology and Management

    Landscape Ecology and Management 13(1_2), 87-104, 2009

    Japan Association for Landscape Ecology

Codes

  • NII Article ID (NAID)
    130002147638
  • NII NACSIS-CAT ID (NCID)
    AA12059695
  • Text Lang
    JPN
  • ISSN
    1880-0092
  • NDL Article ID
    10369986
  • NDL Source Classification
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL Call No.
    Z74-B939
  • Data Source
    NDL  J-STAGE 
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