| Study on relationship between plant roots and soil anti-erodibility of different land utilization types |
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| DOI：10.7606/j.issn.1000-7601.2013.02.21 |
| Key Words: roots length roots biomass anti erodibility aggregate purple soil |
| Author Name | Affiliation | | LU Gang | College of Environment Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China | | WEI Zhongping | The Liaoning Academy of Forestry, Shenyang, Liaoning 110032, China | | GAO Yingxu | The Liaoning Academy of Forestry, Shenyang, Liaoning 110032, China | | LI Hongwei | College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Based on the quantitative analysis of plant roots distribution characteristics of tilth soil under four land utilization types in Purple Soil, this paper revealed the internal relation between roots distribution and indicators of soil anti-erodibility, and made clear the influence mechanism of root on soil anti-erodibility. Results showed that root of minor diameter class, especially ＜1 mm roots, had promotion effect on formation of ＞0.25 mm ＆ ＞0.5 mm water stable aggregate. The length of ＜0.5 mm roots had remarkable correlation with rate of structure deterioration, the reunion situation, ＜0.001 mm granule content, and ＜0.01 mm granule content. Due to the richest root content, the longest ＜0.5 mm roots and the best soil granular structure, anti erodibility of bamboo forest land was strongest. Roots of traditional farmland were scarcity, and the anti-erodibility of it was the weakest. |
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