广西不同地理区域森林土壤水文物理性质研究

对广西９个不同区域森林土壤（０－１００ｃｍ）水文物理性质进行测定，结果表明，不同林型的土壤容重为０．５４～１５５ｇ／ｃｍ３；总孔隙度３９％一９６．４％；最大持水量４１１．７～７５９．６ｍｍ；通气度３．２％～２７．６％；平均渗透速度０．７９～３８．５ｍｍ／ｍｉｎ。不同土类及林型的土壤容重的大小为；黄壤＜红壤和阔叶林或针阔叶混交林＜针叶林，而总孔隙度、持水量、通气度及渗透速度则相反。

Investigation on Soil Hydro physical Properties of Forest Soil at Different Geographic Regions in Guangxi

Soil hydrophysical properties of forest soil at different geographic regions in Guangxi is studied in this paper. Resultsshow that soil volume weigh of different forest types is 0.54~1.55 g/cm~3, total porosity 39.2%~96.4%, maximumretained water 411.7~759.6mm, aeration 3.2%~27.6%, and mean infiltration rate 0.79~38.5 mm/min. The order of soilvolume weigh is yellow soil < red and yellow soil < red soil, and for different forests, that is broad-leaf forest ortheropencedrymion < coniferours forest. But total porosity, moisture capacity, aeration and infiltration rate are contrary.