National-scale 3D mapping of soil organic carbon in a Japanese forest considering microtopography and tephra deposition

Naoyuki Yamashita,Shigehiro Ishizuka,Shoji Hashimoto,Shin Ugawa,Kazuki Nanko,Yoko Osone,Junko Iwahashi,Yoshimi Sakai,Motoko Inatomi,Ayumi Kawanishi,Kazuhito Morisada,Nagaharu Tanaka,Shuhei Aizawa,Akihiro Imaya,Masamichi Takahashi,Shinji Kaneko,Satoru Miura,Keizo Hirai

Geoderma（2022）

引用 9|浏览10

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摘要

•Distances and directions from volcanos are effective covariates for SOC mapping.•3D mapping with 10-m resolution can reproduce SOC along with microtopography.•SOC may accumulate more on ridges, highland slopes, and landslide masses.

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关键词

Bulk density,Digital soil mapping,Machine learning,Microtopography,Rock fraction,Soil organic carbon,Tephra

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