Title: Effect on Soil and Water Conservation from Different Models of Conversion of Farmland to Forest in Huangshui River at Qinghai
Abstract: Based on field investigation and experimental data,soil and water conservation effect was studied in Huangshui river at Qinghai province.The results showed that the sequence of water and soil holding capacity is 41 a Populus cathayana41 a Picea crassifolianatural scrub forest9 a mixture of Picea crassifolia and Hippophae rhamnoides9 a Hippophae rhamnoides9 a Picea crassifolia(lower slope)9 a Picea crassifolia(upper slope)4 a mixture of Picea crassifolia and Hippophae rhamnoidesfarmland.Campared with farmland soil,after 5 years of conversion of farmland to forest,the index of physical and chemical characters and microbial characteristic in soil,takes on obvious changes,and it is stable infiltration velocity of natural scrub forest9 a mixture of Picea crassifolia and Hippophae rhamnoides4 a mixture of Picea crassifolia and Hippophae rhamnoidesfarmland.And soil erodible factor,K is determined to 0.483 in natural scrub forest from 0.773 in farm.And water holding of little per unit of 41 a Populus cathayana was 2.6 times than that of 41a Picea crassifolia.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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Cited By Count: 1
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