Influence of soil properties on the heartwood colour of Juglans mandshurica var. sachalinensis in a cool temperate forest

Abstract Heartwood colour is often an important factor in determining timber prices. However, the determinants of intraspecific variation heartwood colour, which useful information for sustainable wood marketing, are little understood, especially at local scale cool temperate forests. Because produced as a secondary compound and photosynthesis regulated by nitrogen (N) forests, we hypothesized that (1) soil conditions determine even within tree species (2) N, specifically, can be driver trees To test these hypotheses, investigated relationship between values (luminescence, redness, yellowness) from Juglans mandshurica var. sachalinensis parameters forest. Among properties, not N but magnesium (Mg) contents alone had significant influence on redness yellowness heartwood. Higher Mg resulted increased our study, probably due to increase phenolics colouring tannins with Mg. Our results indicate scale, condition forest managers utilize edaphic predict marketing.