A Quantitative Analysis of Factors Influencing Organic Matter Concentration in the Topsoil of Black Soil in Northeast China Based on Spatial Heterogeneous Patterns. - Zhenbo Du; Bingbo Gao; Cong Ou; Zhenrong Du; Jianyu Yang 005; Batsaikhan Bayartungalag; Battogtokh Dorjgotov; Wenju Yun; Dehai Zhu (ISPRS Int. J. Geo Inf., 2021)