marginally significantp < 0.1
In contrast, only EC and MDNN had marginally significant correlations with SOC ( p < 0.1) in the YNNR site.
In contrast, only EC and MDNN had marginally significant correlations with SOC ( p < 0.1) in the YNNR site.
Our finding on the vertical distribution pattern of SOC density agrees with many previous studies showing that SOC distribution tends to exhibit a decreasing trend towards deeper soil layers [ 17 , 18 ].