论文部分内容阅读
在喀什地区疏勒县盐结皮厚度2、3、5cm典型区域设置样地,利用数理统计方法比较分析了盐结皮覆盖土壤及无结皮覆盖(CK)土壤含水量,确定了不同土壤盐结皮厚度覆盖下的土壤水分时空分布动态。结果表明:上层土(0~30cm)变异性较大,中层土(30~40cm)有盐结皮覆盖的土壤含水量均大于无盐结皮覆盖的土壤含水量,下层土(40~50cm)在盐结皮较厚(3、5cm)时,有盐结皮覆盖的土壤含水量均大于无盐结皮覆盖的土壤含水量,在盐结皮较薄(2cm)时,无盐结皮覆盖的土壤含水量均大于有盐结皮覆盖的土壤含水量。研究表明不同厚度盐结皮覆盖会影响土壤水分的迁移,从而使不同层次的土壤含水量呈现不同的规律。
In the Kale area, the samples of the 2, 3, 5 cm thickness of salt crusts in Kailu County were set up. The soil water content of salt - crust covered soil and non - crust covered (CK) soil was compared and analyzed by using mathematical statistics. Spatial and Temporal Distribution of Soil Moisture under the Covering Crust Thickness. The results showed that the variability of topsoil (0-30 cm) was larger than that of the soil without salt crust (40-40 cm) When the salt crust was thick (3, 5 cm), the soil water content covered by salt crusts was larger than the soil moisture content covered by salt-free crusts. When the salt crusts were thin (2 cm), the salt-free crusts covered Of the soil water content is greater than the salt crust covered soil moisture content. Studies have shown that different thickness of salt crust coverage will affect the migration of soil moisture, so that different levels of soil moisture showed different laws.