几种生态公益林土壤物理性质及其水源涵养功能

Physical Properties of Soil and Water Conservation Function of Some Types of Non-commercial Forest

对几种生态公益林的土壤物理性质及其水源涵养功能进行了研究，结果表明：营造生态公益林后，土壤的生态功能得到改善；生态公益林地的土壤容重明显低于杉木林地，降低幅度为10％～12％；土壤毛管孔隙度、非毛管孔隙度和总孔隙度均有增加；土壤自然含水量和毛管持水量分别较杉木林地提高了13％～28％和23％～27％；不同林地土壤的蓄水量为风景林地〉水源涵养林地〉水土保持林地〉杉木林地，而凋落物持水量和林地蓄水量为水源涵养林地〉风号林地〉水土保持林地〉杉木林地．

The physical properties of soil and water conservation function of several types of non - commercial forests were studied. The results showed that the ecological functions of the tested soil were improved after the land was planted as non -commercial forest. Compared to the soil of Cunninghamia lanceolata plantation, the bulk densities of the non - commercial forest soil were reduced by 10% - 12%, both the capillary and non - capillary porosities and the total porosities of the soil increased. The natural soil water content and the capillary moisture were 13% -28% and 23% -27% respectively higher than those of the soil in C. lanceolata plantation. The order of water holding capacity of the different plantation soils was the landscape woodland 〉 water conservation woodland 〉 water and soil conservation woodland 〉 C. lanceolata plantation. The order of water holding capacity of the litter and forest land was water conservation woodland 〉 landscape woodland 〉 water and soil conservation woodland 〉 C. lanceolata plantation.