Evaluation of the carbon sink potential of wooden foundation piles embedded in oxygen-depleted soils using density profile analysis

Momohara, Ikuo; Yamashita, Kana; Miyoshi, Yuka; Murata, Takumi; Numata, Atsunori

doi:10.1186/s10086-025-02198-w

Fig. 5

From: Evaluation of the carbon sink potential of wooden foundation piles embedded in oxygen-depleted soils using density profile analysis

Sample of gray level image (a) and apparent density image (b). The gray level image was obtained by directly scanning the soft X-ray image in 16-bit transparency mode. The apparent density image was calculated using the inverse function derived from the equation in Fig. 3. The pattern of light and dark areas observed in the image reflects the characteristic structure of softwood, comprising alternating bands of less dense earlywood (darker areas) and denser latewood (lighter areas) that appear along the radial direction (R-direction)

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