Temporal Variation of Leucaena Leucocephala Seedlings in Soil Conservation and Slope Protection

DOI

10.2991/ap3er-15.2015.97How to use a DOI?

Keywords

Soil conservation and slope stabilization; Leucaena leucocephala seeding; ecological restoration; soil root system; Biomass.

Abstract

Leucaena leucocephala has been widely used in the ecological restoration and protection of engineering slopes in southwest hydropower projects. It is one of the key issues in slope ecological restoration that how to determine seeding age for transplantation. The erosion resistance, scour resistance, shear strength of soil-fibrous root systems and tensile strength of root systems were tested to evaluate the effects of L. leucocephala seedlings on soil conservation and slope protection and its temporal variation within 12 months after being planted. The results showed that the average height and root biomass of L. leucocephala seedlings reached 208.1cm and 46.6g. The erosion resistance, scour resistance and shear strength of its soil-root system were increased by 288.4 %, 198.6% and 226.4% contrast with that of the control, respectively. The effects of its soil-root system on soil conservation and slope stabilization increased with the prolonging of plant growth time constantly, and during six month to seven, it grow the fastest. Correlation analysis indicated that the performance of soil root systems had significant positive correlation with root system biomass. It suggested that the differences in root system biomass caused the changes of root systems in soil conservation and slope stabilization. L. leucocephala seedlings over seven month old had very obvious effects on soil conservation and slope stabilization with good ability to establish, can be used practically for the ecological restoration of engineering slopes.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ling Bai
AU  - Fangqing Chen
AU  - Yu Huang
PY  - 2015/06
DA  - 2015/06
TI  - Temporal Variation of Leucaena Leucocephala Seedlings in Soil Conservation and Slope Protection
BT  - Proceedings of the 2015 Asia-Pacific Energy Equipment Engineering Research Conference
PB  - Atlantis Press
SP  - 413
EP  - 416
SN  - 2352-5401
UR  - https://doi.org/10.2991/ap3er-15.2015.97
DO  - 10.2991/ap3er-15.2015.97
ID  - Bai2015/06
ER  -