Estimating soil moisture for afforestation using Terra/ASTER satellite data

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  • NONOMURA Atsuko
    Fac. of Engineering Dept. of Safety Systems Construction Engineering Kagawa Univ.
  • MIYAGAWA Satoshi
    Dept. of Safety Systems Construction Engineering Graduate School of Engineering Kagawa Univ.
  • YAMANAKA Minoru
    Fac. of Engineering Dept. of Safety Systems Construction Engineering Kagawa Univ.
  • HASEGAWA Shuichi
    Fac. of Engineering Dept. of Safety Systems Construction Engineering Kagawa Univ.
  • MASUDA Takurou
    Fac. of Engineering Dept. of Safety Systems Construction Engineering Kagawa Univ.

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Other Title
  • Ｔｅｒｒａ／ＡＳＴＥＲ衛星データによる緑化適地選定に向けた土壌水分量推定
  • Terra ASTER エイセイ データ ニ ヨル リョクカ テキチ センテイ ニ ムケタドジョウ スイブンリョウ スイテイ

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Abstract

Bare land is widely distributed over the northern part of Naoshima Island in Kagawa Prefecture. Afforestation is difficult in this area because of dry soil conditions. To determine which parts of the region might be afforested the distribution of soil water content over the region was estimated using Terra/ASTER satellite data. Data from Band 3(NIR, 0.78-0.86 μm)and Band 4(SWIR, 1.600-1.700 μm)was used, after demonstrating that these bands are closely related to surface soil moisture. It was found from field work in forested areas that areas with water content more than 3.5% and slopes less than 30 degrees could be easily afforested. The satellite data was used to identify the areas with the required water contents for planting. The method appears to be a very useful and efficient tool in planning afforestation.

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