Studies on the canopy precipitation interception

litter layer water-holding capacity

soil physical property and water holding capacity of main types of artificial forests and waste grassland were made in Lianhua lake reservoir area.The results indicated that the canopy interception were 34.83%

13.05%

19.61%

the stem-flow were 6.79%

0.58%

4.01%

the throughfall were 58.37%

86.18%

77.66% of Pinus koraiensis

Larix gmelinii

weed trees

respectively.The canopy interception

stemflow and throughfall was positively correlated with precipitation amount

the experiential models between canopy interception

stemflow

throughfall and rainfall were given.The maximum water-holding capacity of the whole litter layer ranged from 12.0 to 24.0 t/hm~2

being in the declined order of Pinus koraiensis

Larix gmelinii

weed trees

waste grassland.The modified interception varied from 2.94 to 45.97 t/hm~2

in the declined order of Pinus koraiensis

Larix gmelinii

weed trees

waste grassland.The modified interception rate varied from 53.45% to 65.95%

in the declined order of Pinus koraiensis

weed trees

Larix gmelinii

and waste grassland.The maximum water storage in different forest type varied from 1 838.6~2 186.3 t/hm~2

and the order wasLarix gmelinii>weed trees>Pinus koraiensis>waste grassland;the water holding capacity of non-capillary porosity varied from 16.26~25.28 mm

being in the declined order of Larix gmelinii

Pinus koraiensis

weed trees

waste grassland.The soil infiltration rate in forest land is obviously higher than that in waste grassland.In the matter of soil layer thickness

it manifested a tendency of lowering in soil infiltration rate with the drop layer.In other words

the spatial characteristics of soil infiltration rate along the soil layer is upper layer>middle layer>lower layer. The important scientific proofs for the study of the water and soil conservation functions of the forests and further comprehensive evaluation of ecological function of forests were provided here.