雾灵山典型林分枯落物和土壤水文效应

通过标准地调查、枯落物持水能力测定、土壤物理性质及持水能力测定和入渗实验对雾灵山5种林分类型枯落物和土壤水文效应做了初步研究,结果表明:1)华北落叶松林(Larix principic-rupprechtii)枯落物储量最大,为45.73 t·hm~(-2);核桃楸林(Juglans mandshurica)最大持水量最高,为118.73 t·hm~(-2),相当于11.87 mm的水深;华北落叶松林有效持水量最大,为112.68t·hm~(-2),相当于11.27 mm的水深.2)5种不同林分类型土壤层持水能力相差很大,山杨林(Populus davidiana)的有效持水量最大,为122.80t·hm~(-2),相当于12.28 mm的水深,利用幂函数对土壤入渗速率与入渗时间进行拟合,结果显示相关系数都在0.94以上.

Hydrological effects of forest litters and soil in Wuling mountain

A pilot study of hydrological effects of litters layer and soil layer was carried out in five kinds of forest stands in Wuling mountain, through investigating standard spotss determining litter water-holding capacity, determining soil physical characteristics and water-holding capacity,and experimenting on soil infiltration, the result shows: l)The litter total storage capacity of L arix princi-pis-rupprechtii is the largest to 45.73t·hm~(-2); the maximum water capacity of Manchurian walnut is the largest to 118.7 t·hm~(-2), equivalent to the depth water of 11.87 mm; the available water capacity of L arixprincipis-rupprechtii is the largest tol 12.68t·hm~(-2), equivalent to the depth of 11.27 mm water. 2) The soil water-holding capacity of five kinds of different forest types differ greatly,the available water capacity of Asian white birch is the largest to 122.80t·hm~(-2), equivalent to the depth water of 12.28mm.using power function of infiltration rate and infiltration fitting time,the correlation coefficient was above 0.94.