不同封育时间闽粤栲群落凋落物特征研究

分析了不同封育时间闽粤栲群落的凋落物特征随不同立地条件的变化规律.结果表明:不同封育时间闽粤栲群落每hm2凋落物干重、每t干物质持水量及每hm2凋落物持水量随立地因子变化较小,t检验结果表明:每hm2凋落物持水量达到显著水平.从不同封育时间来看,封育20年后闽粤栲群落的凋落物每hm2凋落物干重、每t干物质持水量及每hm2凋落物持水量比封育10年后闽粤栲群落均有较大幅度提高,其中封育20年后凹形每hm2凋落物干重、每hm2凋落物持水量与封育10年后凹形每hm2凋落物持水量差异达到显著水平,凸形每hm2凋落物干重、每hm2凋落物持水量则达到极显著水平.

Study on Litters Character in Castartopsis fissa Communities Under the Condition of Different Periods of forest Enclosing and Tending

The character of litter in the community of Castartopsis fissa under the different site were analyzed in this paper.Results show that,in the communities of Castartopsis fissa in different periods of forest enclosing and tending,the varies of the dry mass of litters per hectare,the water-holding capacities of dry mass per ton and the water-holding capacities of litters per hectare under conditions of different habitat factors seem little. And it is demonstrated that the water-holding capacities of litters per hectare seems notable by means of T verify.Meanwhile,it seems that figures of the dry mass of litters per hectare,the water-holding capacities of dry mass per ton and the water-holding capacities of litters per hectare in the communities of Castartopsis fissa with forest enclosing and tending for twenty years were more rapidly improved than that of ten years.Among them,in the shape of concave slope,the varies of the dry mass of litters per hectare,the water-holding capacities of litters per hectare in the communities of Castartopsis fissa with forest enclosing and tending for twenty years and the water-holding capacities of litters per hectare for ten years seem notable while in the shape of convexity slope,the varies of the dry mass of litters per hectare,the water-holding capacities of litters per hectare seem notable.