湖北林业科技

Forestland is the principal part of forest to conserve water. The soil properties and water conservation function of 10 types of converting land for forest were studied in Zigui county, the results showed:(1)The total soil porosity and non-capillary soil porosity increased from 4.3% to 20.2% and 6.8% to 494.2% respectively after converting land for green; (2) and the soil saturation water capacity increased from 5.7% to 118.8%, the non-capillary water capacity was over 2.58~19.13 times to sloping field; (3)the soil capacity of converting land for green in Zigui county was 171.6 ten thousand m~ 3 /a,it was 3.21 times to cultivated slope with similar site condition.