关键词: 人工植被, TWINSPAN分类, DCA排序, DCCA排序, 安太堡矿区, 恢复生态学

Abstract: Hydraulic redistribution is defined as a process of water translocation along vertical or horizontal direction by roots between the interface of root and soil. The earlier experiments of hydraulic redistribution were conducted with split-root apparatus under laboratory condition, and the soil water content was determined by gamma densitometry, weighing method, drying method, and TDR, etc. Under field condition, the hydraulic redistribution was studied with four methods,i.e., measuring the diurnal and seasonal fluctuations of soil water potential by thermocouple thermometry, deuterium labeling, measuring the sap flow in root xylem, and measuring the soil volumetric water content by TDR. The factors affecting hydraulic redistribution include soil water, soil texture, plant species, and transpiration, etc. In the future, the researches on the occurrence conditions of hydraulic redistribution between the interface of root and soil, as well as the relationships between the affecting factors and the frequency and quantity of hydraulic redistribution should be strengthened, so as to provide theoretical basis for making better use of the water regulation functions of hydraulic redistribution.

Key words: Artificial vegetation, TWINSPAN classification, DCA ordination, DCCA ordination, Antaibao mining area, Restoration ecology