Changes in Soil and Eutrophic Component Losses due to Deforestation in Sloping Area
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Accession number;03A0395289
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| Title;Changes in Soil and Eutrophic Component Losses due to Deforestation in Sloping Area |
| Author;
MIHARA M
(Tokyo Univ. Agriculture, Tokyo, Jpn)
CHEN Y
(Tokyo Univ. Agriculture, Tokyo, Jpn)
KOMAMURA M
(Tokyo Univ. Agriculture, Tokyo, Jpn)
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Journal Title;Transactions of the Japanese Society of Irrigation, Drainage and Reclamation Engineering
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Journal Code:S0345A
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ISSN:0387-2335
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VOL.;NO.224;PAGE.167-173(2003)
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| Figure&Table&Reference;FIG.7, TBL.5, REF.6 |
| Pub. Country;Japan |
| Language;English |
| Abstract;This study dealt with the changes in soil and eutrophic component losses due to deforestation. The bared and forested plots of 33 slope degrees were set up in sloping area of Tama hill. After clearing woods and weeds for bared plot, soil and eutrophic component losses from bared plot were compared with those from forested plot. Also, the effects of A0 layer and of plant cover in forest on the reduction of soil loss were evaluated on the basis of the cover and plant management factor in the universal soil loss equation using the slope models under the artificial rainfall simulator. The results indicated that nitrogen and phosphorus losses from forested plot were higher than from bared plot in the range of soil loss from forested plot. However, soil loss from forested plot was obviously lower than from bared plot, so consequently total nitrogen and phosphorus losses from forested plot became lower than from bared plot. It follows that soil conservation measures have an important role for reducing soil and eutrophic component losses in deforested area. Additionally, the experimental results using the artificial rainfall simulator indicated that the plant cover was approximately 1.5 times more effective than the A0 layer in forested plot from the viewpoint of soil conservation. (author abst.) |
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