Root distribution characteristics of two cuttage plants on bank slope and its effects on soil aggregates

SUN Yi-hui; MA Lan; ZHANG Dong; XIA Xiao-ping; XUE Meng-jun; MIAO Xin-yun

doi:10.13332/j.1000-1522.20170076

Journal of Beijing Forestry University > 2017 > 39(7): 54-61. > DOI: 10.13332/j.1000-1522.20170076

SUN Yi-hui, MA Lan, ZHANG Dong, XIA Xiao-ping, XUE Meng-jun, MIAO Xin-yun. Root distribution characteristics of two cuttage plants on bank slope and its effects on soil aggregates[J]. Journal of Beijing Forestry University, 2017, 39(7): 54-61. DOI: 10.13332/j.1000-1522.20170076

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Root distribution characteristics of two cuttage plants on bank slope and its effects on soil aggregates

1.
Beijing Engineering Research Center of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, P. R. China
2.
Beijing Shenghailin Ecological Environmental Technologies Corp., Beijing Forestry University, Beijing, 100083, P. R. China

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Received Date: March 13, 2017
Revised Date: March 29, 2017
Published Date: June 30, 2017

Graphical Abstract

Abstract

Abstract

The root distribution characteristics of two cuttage plants(five-year-old Salix alba var. tristis and Populus tomentosa)were measured by soil column method. The stability of water-stable aggregates and erodibility characteristics in different-layer soil under two cuttage plants were measured by rapid wetting treatment in Le Bissonnais method, and the measuring index included water-stable aggregates (>0.25 mm) content (R_0.25), mean weight diameter of aggregates (MWD) and factor of soil erodibility (K). Root distribution characteristics of two cuttage plants on the slope and their effects on soil aggregates were analyzed. The results showed that: 1) the roots of two cuttage plants mainly distributed in the 0-40 cm soil layer around the trunk, with >5 mm thick roots as the main components. 2) In the 0-100 cm soil layer, the root content, soil aggregate stability and soil erosion resistance decreased with the increase of soil depth. 3) In the aspect of increasing soil aggregate stability and erosion resistance through root system, Salix alba var. tristis was better than Populus tomentosa. 4) R_0.25 and < 1 mm root content showed a significantly positive correlation, indicating that the performance of roots in improving soil aggregate structure was mainly determined by < 1 mm root content.
- cuttage,
- Salix alba var. tristis,
- Populus tomentosa,
- root distribution,
- soil aggregate

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References

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Root distribution characteristics of two cuttage plants on bank slope and its effects on soil aggregates

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