of;
Management;
Tianjin;
Polytechnic;
University;
Tianjin;
300387;
P.R.;
China;
Laboratory;
of;
Agri-lnformatics;
Ministry;
of;
Agriculture~Institute;
of;
Agricultural;
Resources;
&;
Regional;
Planning;
Chinese;
Academy;
of;
Agricultural;
Sciences;
Beijing;
100081;
P.R.China;
of;
Management;
Tianjin;
University;
Tianjin;
300372;
P.R.China;
社会经济因素; 土壤有机质; 气候观测; 黑龙江省; 时空变异; 中国; 回归系数; GIS空间分析;