A pilot study of hydrological effect s of litters layer and soil layer was carried out in four kinds of forest stands in Beigou forest farm,Hebei province.The result showed:(1)The litter total storage capacity of Larix principis-rupprechti mixed Chinese pine was 12.28 t/hm2,the maximum water capacity was 24.60 t/hm2,the modified interception amount was 27.19 t/hm2;the litter total storage capacity of Chinese pine was 11.74 t/hm2,the maximum water capacity was 19.30 t/hm2,the modified interception amount was...