The soil properties and water conservation function of main forest types were conducted in eastern mountainous region of northeast China

the results show as the follows: organic matter content and soil total porosity from high to low were all Larix sp.plantation>secondary forest>Pinus koraiensis plantation>mixed wood.The soil bulk desity(0~40 cm) was mixed wood>secondary forest>Pinus koraiensis plantation>Larix sp.plantation.The saturation holding capacity of Larix sp.plantation was 2 326.24 t/hm~2

2 258.6 t/hm~2 in secondary forest

2 252.29 t/hm~2 in Pinus koraiensis plantation

and 1851.11 t/hm~2 in mixed wood.The water-holding capacity of litter was 136.63 t/hm~2 in Larix sp.plantation

56.08 t/hm~2 in mixed wood

54.29 t/hm~2 in Pinus koraiensis plantation

and 40.1 t/hm~2 in secondary forest.The order of the water conservation function was: Larix sp.plantation(2 462.87 t/hm~2)>Pinus koraiensis plantation(2 306.58 t/hm~2) >secondary forest((2 298.87) t/hm~2)>mixed wood(1 907.19 t/hm~2).