关键词: 天童国家森林公园, 枯落物层, 土壤层, 生态水文功能, 天童国家森林公园, 枯落物层, 土壤层, 生态水文功能

Abstract: To study the ecohydrological functions of the litter and soil, we selected shrubland ( Lithocarpus glaber + Loropetalum chinense community), secondary and young evergreen broadleaved forest (EBLF) ( Schima superba community) and mature EBLF ( Castanopsis fargesii community) as research stands. The results showed that the storage of litter layer was as follows: Lithocarpus glaber + Loropetalum chinense community (6.66 t·hm^-2)＞mature Castanopsis fargesii community (6.43 t·hm^-2) ＞ Schima superba community (6.1 t·hm-²). The water holding capacity in mature EBLF, secondary and young EBLF, shrubs were 10.58，11.29 and 13.88 t·hm^-2, and the corresponding effective water holding depth of litter layer in these three types were 0.49，0.55 and 0.73 mm respectively. During the process in water holding of litter layer, the water holding capacity and absorption speed in the first 2 hours were superior to the rest of time. The equations of water holding capacity and water absorption speed with immersed time are Q=alnt+b and V=ktⁿ . Compared with Castanopsis fargesii community and Schima superba community, the physical properties and water holding capacity of soil of Lithocarpus glaber + Loropetalum chinense community didn’t drop behind the other two types of forests. During the studying period, the water storage of three forest soil within the depth of 30 cm was 67.2~150.0 mm. These results suggested that the soil layer had a better water holding capacity than that of the litter layer in different types of the forest.

Key words: forest litter layer, soil layer, ecohydrological function, Tiantong National Forest Park (TNFP), forest litter layer, soil layer, ecohydrological function