Summer-season Differences in <I>NDVI</I> and <I>iTVDI</I> among Vegetation Cover Types in Lake Mashu, Hokkaido, Japan Using Landsat TM Data

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概要

• 論文の詳細を見る

• The improved Temperature Vegetation Dryness Index (<I>iTVDI</I>) can be used as an indicator of transpiration rates in mountainous areas. We investigated the influence of vegetation cover types on differences observed in <I>iTVDI</I>, together with <I>NDVI</I> in vegetation covers around Lake Mashu in a summer day. Based on the results of comparing <I>NDVI</I> and <I>iTVDI</I> values among 14 vegetation cover types, it was shown that the vegetation cover type differences could cause significant differences in <I>iTVDI</I> values. Shrub and grassland categories showed lower <I>NDVI</I> but higher <I>iTVDI</I> values, whereas tall trees except Erman's birch showed relatively higher <I>NDVI</I> but lower <I>iTVDI</I> values. The Erman's birch <I>iTVDI</I> values were higher than the other tall trees. These results suggest that the difference of vegetation cover types could be one of the factors that influence <I>iTVDI</I> values.

• 日本生物環境工学会の論文

著者

• Shimizu Yo

  Graduate School Of Agricultural And Life Sciences The Univ. Of Tokyo

• Hosoi Fumiki

  Graduate School Of Agricultural And Life Sciences The University Of Tokyo

• Omasa Kenji

  Graduate School Of Agricultural And Life Sciences The Univ. Of Tokyo

• Shimizu Yo

  Department Of Biological And Environmental Engineering Graduate School Of Agricultural And Life Scie

• NAITO Hiroki

  Graduate School of Agricultural and Life Sciences, The University of Tokyo

• RAHIMZADEH-BAJGIRAN Parinaz

  Department of Geography, University of Guelph

• SHIMIZU Yo

  Graduate School of Agricultural and Life Sciences, The University of Tokyo

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