SPOT-Vegetation と Terra-MODIS による東アジアの植生変動推定 Estimation of Vegetation Changes in East Asia with SPOT-Vegetation and Terra-MODIS

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In recent years, distribution of forests is changing in many countries due to desertification and planting. Satellite remote sensing provides detailed distribution of the vegetation changes. In particular, the new satellite sensors, such as MODIS and SPOT-Vegetation, have provided more accurate data than old sensors such as NOAA-AVHRR for such purpose. In this research, we analyzed vegetation changes from year 2000 to 2005 in eastern Asia with data taken by SPOT-Vegetation and Terra-MODIS. In order to remove cloud contaminations, we applied annual MVC (maximum value composite) to time series in NDVI (Normalized Difference Vegetation Index) taken by each sensor. The annual MVC made it easy to see inter-annual variability because it is hardly influenced by seasonality of vegetation. Then we calculated the linear trend of inter-annual NDVI at each pixel. We applied these procedure to each sensor's NDVI data independently for the sake of cross-validation. As a result, both sensors consistently showed increase of NDVI in north-eastern to central China, whereas decrease in eastern Mongolia. By extracting the trends of NDVI with statistical significance of p=0.05 for both sensor's data, we estimated that NDVI increased in an area of 177,000km<SUP>2</SUP>, whereas decreased in an area of 63,000km<SUP>2</SUP>. Most of the increase happened in China. This estimation was consistent with FRA2005 (Global Forest Research Assessment 2005), in which Chinese forest reportedly increased in more than 200,000km<SUP>2</SUP> from 2000 to 2005.

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  • 日本リモートセンシング学会誌 = Journal of the Remote Sensing Society of Japan  

    日本リモートセンシング学会誌 = Journal of the Remote Sensing Society of Japan 28(1), 36-43, 2008-01-31 

    The Remote Sensing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10021141791
  • NII書誌ID(NCID)
    AN10035665
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    02897911
  • NDL 記事登録ID
    9378764
  • NDL 雑誌分類
    ZM15(科学技術--科学技術一般--測定・測定器)
  • NDL 請求記号
    Z14-1022
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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