Composition and stability of soil aggregates in hedgerow-crop slope land

Based on a long-term experiment of using hedgerow to control soil and water loss, this paper studied the composition and stability of soil aggregates in a hedgerow-crop slope land. Compared with those under routine contour cropping, the contents of > 0.25 mm soil mechanical-stable and water-stabl...

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Bibliographic Details
Published inYing yong sheng tai xue bao Vol. 24; no. 1; p. 122
Main Authors Pu, Yu-Lin, Lin, Chao-Wen, Xie, De-Ti, Wei, Chao-Fu, Ni, Jiu-Pai
Format Journal Article
LanguageChinese
Published China 01.01.2013
Subjects
Agriculture - methods
China
Conservation of Natural Resources
Crops, Agricultural - growth & development
Ecosystem
Soil - chemistry
Tropical Climate
Water - analysis
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Summary:Based on a long-term experiment of using hedgerow to control soil and water loss, this paper studied the composition and stability of soil aggregates in a hedgerow-crop slope land. Compared with those under routine contour cropping, the contents of > 0.25 mm soil mechanical-stable and water-stable aggregates under the complex mode hedgerow-crop increased significantly by 13.3%-16.1% and 37.8% -55.6%, respectively. Under the complex mode, the contents of > 0.25 mm soil water-stable aggregates on each slope position increased obviously, and the status of > 0.25 mm soil water-stable aggregates being relatively rich at low slope and poor at top slope was improved. Planting hedgerow could significantly increase the mean mass diameter and geometric mean diameter of soil aggregates, decrease the fractal dimension of soil aggregates and the destruction rate of > 0.25 mm soil aggregates, and thus, increase the stability and erosion-resistance of soil aggregates in slope cropland. No significant effects of slope and he
ISSN:1001-9332