【摘要】 通过野外调查的方法测定了典型黑土剖面土壤含水量和温度,并利用统计学分析了水热性状在2.2m×2.1m空间上的异质性。结果表明:尽管土壤容积含水量、密度、温度沿剖面垂直方向有规律的变化,但在水平方向存在较大的变异,容积含水量最大差异可达6.5个百分点,温度可达3.0℃;由于黑土剖面土壤密度变化较大,土壤质量含水量无论是垂直方向还是水平方向均存在较大的空间变异,容积含水量能够更好地反映土壤水分的空间变化。图7,表2,参9。更多还原

【Abstract】 Soil moisture and temperature were measured in a 2. 2m ×2. 1m black soil profile,and their spatial variability were analyzed by geostatistics method. The results showed that there was a great variability in horizon,the max difference of volumetric water content was 6. 5 percent,and temperature was 3. 0 ℃ in the same horizon,although soil volumetric water content,bulk density and temperature varied regularly in vertical. Due to a large variation of soil bulk density in the soil profile,soil gravimetric water content had a big variability,no mater what in vertical or in horizon. Soil volumetric water content was a useful parameter which could show soil moisture variability in soil profile.更多还原