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在福建省南平市花岗岩母质的林地上 ,应用生态系列法对不同栽植代数、不同立地条件和不同林分年龄的系列杉林样地土壤的物理性质进行了研究。结果表明 ,杉木连栽对土壤容重和孔隙状况的影响主要在林分的中龄林时期。随着栽植代数的增加 ,土壤容重趋于增加 ;对于幼林和成林 ,由于受整地、抚育和林下植被的恢复及枯枝落叶的分解 ,不同栽植代数对土壤孔隙状况的影响不甚明显 ;不同栽植代数对土壤水分性能的影响主要表现在中龄林和成熟林时期。表层土壤的持水能力一般随栽植代数增加而下降 ,土壤的渗透性能趋于降低 ,地位指数愈高 ,这种下降趋势愈明显
In the forestland of granite parent material in Nanping City of Fujian Province, the ecological characters of the series of Chinese fir plantations with different planting algebra, different site conditions and different stand age were studied by using ecological series method. The results showed that the continuous planting Cunninghamia lanceolata on soil bulk density and pore conditions in the main stand in the middle-aged forest period. With the increase of planting algebra, the soil bulk density tended to increase. For young and mature forests, the effect of different planting algebra on the soil pore condition was not obvious due to soil preparation, tending and the restoration of understory vegetation and litter decomposition. The effect of different planting algebra on soil moisture performance is mainly manifested in the middle-aged forest and mature forest period. The water holding capacity of topsoil generally decreases with the increase of planting algebra, and the permeability of soil tends to decrease. The higher the status index, the more obvious the downward trend