【摘要】 以河北平山县岗南镇低山丘陵区为研究对象,分析不同土层、坡位及坡向的土壤水分特征。结果表明:土壤水分渗透速率随着时间的延长逐渐降低,最后达到稳渗。土壤质地大部分为多砾质,土壤总孔隙度在37.53%~48.12%之间,阳坡绝大部分是毛管孔隙。不同坡位>0.25 mm土壤团聚体含量,坡下明显高于坡上,不同坡向>0.25 mm的团聚体呈现:半阴坡>阴坡>阳坡,且随土层加深含量增加。土壤容重,阴坡>阳坡>半阴坡。土壤蓄水能力,阴坡优于阳坡;20~40 cm的中层土壤蓄水能力优于其它土层。更多还原

【Abstract】 Soil moisture is the main factor of vegetation restoration in granite gneiss mountain area.In order to find the physical laws of soil moisture,we analysis the soil moisture-physical characteristics of the different soil layer,slope position and the slope,respectively,in Hebei Pingshanxian Gangnanzhen hilly area.The results showed that: soil moisture penetration rate gradually extended over time to reduce and finally achieve steady infiltration.Most of the soil texture have some gravel,soil porosity of the total 37.53 percent to 48.12 percent,and sunny most of capillary gap.In different slope,>0.25 mm aggregates of soil,slope significantly higher than those under the slopes,different aspect>0.25 mm reunion of the show: a half of shade slope>shade slope>sunny slope,and the deepening of the soil increased.Soil bulk density,a half of shade slope>shade slope>sunny slope.Soil storage capacity,better than sunny shade slope;From 20 to 40 cm in the middle of soil water storage capacity than other soil.更多还原