摘要
本文研究了砒砂岩地区沙棘人工林地土壤水分物理性质及其变化规律。结果表明：沙棘人工林能够降低土壤容重、改善土壤孔隙状况，并能提高土壤持水能力。与对照地相比，土壤总孔隙度、毛管孔隙度和非毛管孔隙度的增幅分别为8．7％～23．9％，6．2％～22．3％，22．4％～43．8％；最大持水量、毛管持水量和最小持水量的增幅分别为14．8％～31．1％，14．8％～18．2％，5．1％～18．3％。说明沙棘人工林能够显著改善砒砂岩地区土壤水分物理状况。
The soil hydro--physical properties of artificial seabuckthorn woodland had been studied in arsenic sandstone areas. The results show that artificial seabuckthorn woodland was able to reduce soil bulk density, to improve the condition of porosity and increase moisture capacity. Compared with wasteland, the increments of total porosity, capillary porosity, non--capillary porosity was 8. 7% -23.9%, 6.2% -22.3%, 22.4% -43.8% respectively. The increments of max moisture capacity, capillary capacity, min moisture capacity was 14.8%-31.1%, 14. 8%-18.2%, 5.1% -18.3% respectively. It indicated that seabuckthorn stands is capable of improving soil hydro--physical properties in arsenic sandstone areas.
基金
晋陕蒙砒砂岩区沙棘生态工程(水规划〔1998〕111号)
关键词
水分物理性质
沙棘人工林
砒砂岩
hydro-physical properties
artificial seabuckthorn plantation
arsenic sandstone areas
