The water-holding capacity of the litter of Castanopsis fissa communities and its correlation analysis with community structure

Dominance in each layer，species numbers in each layer and characteristics of water-holding capacity of the litter of Castanopsis fissa communities at different stages under forest enclosing and tending were analyzed in this paper．The results show that dominances in tree layer and in herb layer at near-mature stage are larger than those at young stand stage，but the dominance in shrub layer at young stand stage is larger than that at near-mature stage，the t indexes show that they all reach a prominent level；the dry litter weights and water-holding capacities per hectare of the community of Castanopsis fissa at near-mature stage under forest enclosing and tending are larger than those at young stand stage，the t indexes show that they both reach a significant level；correlation analysis indicates that the water-holding capacities and the dry litter weight per hectare are both outstandingly，significantly and positively correlated with the dominance in tree layer．are both outstandingly，significantly and negatively correlated with the dominance in shrub layer，under 90％ reliability，there is a significant and positive correlation between the dominance in herb layer and the water-holding capacities per hectare，between the water-holding capacity of dry litter per ton and species numbers in tree layer；the dominance in shrub layer is outstandingly，significantly and negatively correlated with the dominance in tree layer，there is an outstanding，significant and positive correlation between the dominance in herb layer and the dominance in tree layer，between the water-holding capacities per hectare and the dry litter weight per hectare．