of;
Agro-environmental;
Protection,;
Ministry;
of;
Agriculture,;
Tianjin;
300191,;
China;
Field;
Research;
Station;
of;
Agro-ecosystem;
in;
Hailun,;
Northeast;
Im'titute;
of;
Geography;
and;
Agro-ecology,;
Chinese;
Academy;
of;
Sciences,;
Harbin;
150081,;
China;
团聚体稳定性; 解冻过程; 东北黑土; 冻结; 土壤水分含量; 聚集体尺寸; 聚合稳定性; 冷冻温度;