Full Text:   <2122>

Summary:  <1852>

Suppl. Mater.: 

CLC number: 

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2019-06-18

Cited: 0

Clicked: 4818

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Chung Fai Chiu

https://orcid.org/0000-0002-6591-7130

-   Go to

Article info.
Open peer comments

Journal of Zhejiang University SCIENCE A 2019 Vol.20 No.7 P.546-552

http://doi.org/10.1631/jzus.A1800145


Effects of shrub on one-dimensional suction distribution and water infiltration in a three-layer landfill cover system


Author(s):  Sandar Lin, Charles W.W. Ng, Jie Xu, Rui Chen, Jian Liu, Zhong-kui Chen, Chung Fai Chiu

Affiliation(s):  Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; more

Corresponding email(s):   acf_chiu@stu.edu.cn

Key Words:  Shrub, 1D suction, Water infiltration, Landfill cover, Soil column


Share this article to: More <<< Previous Article|

Sandar Lin, Charles W.W. Ng, Jie Xu, Rui Chen, Jian Liu, Zhong-kui Chen, Chung Fai Chiu. Effects of shrub on one-dimensional suction distribution and water infiltration in a three-layer landfill cover system[J]. Journal of Zhejiang University Science A, 2019, 20(7): 546-552.

@article{title="Effects of shrub on one-dimensional suction distribution and water infiltration in a three-layer landfill cover system",
author="Sandar Lin, Charles W.W. Ng, Jie Xu, Rui Chen, Jian Liu, Zhong-kui Chen, Chung Fai Chiu",
journal="Journal of Zhejiang University Science A",
volume="20",
number="7",
pages="546-552",
year="2019",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1800145"
}

%0 Journal Article
%T Effects of shrub on one-dimensional suction distribution and water infiltration in a three-layer landfill cover system
%A Sandar Lin
%A Charles W.W. Ng
%A Jie Xu
%A Rui Chen
%A Jian Liu
%A Zhong-kui Chen
%A Chung Fai Chiu
%J Journal of Zhejiang University SCIENCE A
%V 20
%N 7
%P 546-552
%@ 1673-565X
%D 2019
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1800145

TY - JOUR
T1 - Effects of shrub on one-dimensional suction distribution and water infiltration in a three-layer landfill cover system
A1 - Sandar Lin
A1 - Charles W.W. Ng
A1 - Jie Xu
A1 - Rui Chen
A1 - Jian Liu
A1 - Zhong-kui Chen
A1 - Chung Fai Chiu
J0 - Journal of Zhejiang University Science A
VL - 20
IS - 7
SP - 546
EP - 552
%@ 1673-565X
Y1 - 2019
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1800145


Abstract: 
Generally, landfill caps are covered with plants to prevent erosion and maintain a natural environment attractive to birds and other wildlife. Plants extract moisture from landfill cover soils during transpiration, and increase soil matric suction, consequently reducing water permeability and influencing the performance of the landfill cover during wetting. However, the effects of plants on suction distribution during drying and their consequent effect on the performance of a landfill cover system during wetting have not been investigated thoroughly. In this study, two soil column tests (one planted with the shrub Schefflera arboricola and the other one bare) were carried out to investigate the effects of shrub on 1D suction distribution in a three-layer landfill cover system during drying and wetting, and on the effectiveness of the landfill cover system in preventing water infiltration upon wetting. Despite the planted column having a higher infiltration rate, the shrub enhanced the effectiveness of the three-layer landfill cover system in preventing water percolation because of its higher induced suction from drying, leading to a higher water storage capacity.

This paper presented the effects of shrub on the suction distribution in a three-layer landfill cover during drying and wetting, and examined the effectiveness of such a system to prevent water infiltration upon wetting via soil column testing. Novelty of this study lied on the plants' hydraulic effects on three-layer system. In general the paper was well-written.

灌木对三层填埋场覆盖系统一维吸力分布和水分入渗的影响

目的:研究灌木对干燥和湿润过程中三层土质覆盖系统的吸力分布的影响.
创新点:发现对于三层土质覆盖系统,干燥过程中植物蒸腾作用不仅提高了土的吸力,同时也增加了土层之间的吸力梯度(图3).
方法: 通过土柱试验模拟干燥和湿润过程,并测量吸力的变化.
结论:1. 植物蒸腾作用导致植有灌木的土在干燥过程中所产生的吸力较没有植物的土高60%~200%. 2. 植物蒸腾作用提高了植有灌木的土的持水能力; 在湿润过程中水分穿透植有灌木的土所需时间比没有植物的土长50%(图3~4).

关键词:灌木; 填埋场覆盖系统; 吸力; 土柱试验

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1]Albright WH, Benson CH, Waugh WJ, 2010. Water Balance Covers for Waste Containment: Principles and Practice. ASCE Press, Reston, USA.

[2]Barley KP, 1954. Effects of root growth and decay on the permeability of a synthetic sandy loam. Soil Science, 78(3):205-210.

[3]Feddes RA, Kowalik P, Kolinska-Malinka K, et al., 1976. Simulation of field water uptake by plants using a soil water dependent root extraction function. Journal of Hydrology, 31(1-2):13-26.

[4]Garg A, Leung AK, Ng CWW, 2015a. Comparisons of soil suction induced by evapotranspiration and transpiration of S. heptaphylla. Canadian Geotechnical Journal, 52(12):2149-2155.

[5]Garg A, Coo JL, Ng CWW, 2015b. Field study on influence of root characteristics on soil suction distribution in slopes vegetated with Cynodon dactylon and Schefflera heptaphylla. Earth Surface Processes and Landforms, 40(12):1631-1643.

[6]Huat BBK, Ali FHJ, Low TH, 2006. Water infiltration characteristics of unsaturated soil slope and its effect on suction and stability. Geotechnical and Geological Engineering, 24(5):1293-1306.

[7]Ishak MF, Ali N, Kassim A, 2013. The influence of tree induce suction on soil suction profiles. IJRET: International Journal of Research in Engineering and Technology, 2(9):187-193.

[8]Jotisankasa A, Sirirattanachat T, 2017. Effects of grass roots on soil-water retention curve and permeability function. Canadian Geotechnical Journal, 54(11):1612-1622.

[9]Khire MV, Benson CH, Bosscher PJ, 1997. Water balance modeling of earthen final covers. Journal of Geotechnical and Geoenvironmental Engineering, 123(8):744-754.

[10]Leung AK, Garg A, Coo JL, et al., 2015. Effects of the roots of Cynodon dactylon and Schefflera heptaphylla on water infiltration rate and soil hydraulic conductivity. Hydrological Processes, 29(15):3342-3354.

[11]Li JH, Li L, Chen R, et al., 2016. Cracking and vertical preferential flow through landfill clay liners. Engineering Geology, 206:33-41.

[12]Mitchell AR, Ellsworth TR, Meek BD, 1995. Effect of root systems on preferential flow in swelling soil. Communications in Soil Science and Plant Analysis, 26(15-16):2655-2666.

[13]Ng CWW, Woon KX, Leung AK, et al., 2013a. Experimental investigation of induced suction distribution in a grass-covered soil. Ecological Engineering, 52:219-223.

[14]Ng CWW, Leung AK, Garg A, et al., 2013b. Soil suction induced by grass and tree in an atmospheric-controlled plant room. Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, p.1167-1170.

[15]Ng CWW, Leung AK, Woon KX, 2014. Effects of soil density on grass-induced suction distributions in compacted soil subjected to rainfall. Canadian Geotechnical Journal, 51(3):311-321.

[16]Ng CWW, Ni JJ, Leung AK, et al., 2016a. Effects of planting density on tree growth and induced soil suction. Géotechnique, 66(9):711-724.

[17]Ng CWW, Ni JJ, Leung AK, et al., 2016b. A new and simple water retention model for root-permeated soils. Géotechnique Letters, 6(1):106-111.

[18]Ng CWW, Coo JL, Chen ZK, et al., 2016c. Water infiltration into a new three-layer landfill cover system. Journal of Environmental Engineering, 142(5):04016007.

[19]Ni JJ, Leung AK, Ng CWW, et al., 2017. Investigation of plant growth and transpiration-induced matric suction under mixed grass–tree conditions. Canadian Geotechnical Journal, 54(4):561-573.

[20]Pollen-Bankhead N, Simon A, 2010. Hydrologic and hydraulic effects of riparian root networks on streambank stability: is mechanical root-reinforcement the whole story? Geomorphology, 116(3-4):353-362.

[21]Sinnathamby G, Phillips DH, Sivakumar V, et al., 2014. Landfill cap models under simulated climate change precipitation: impacts of cracks and root growth. Géotechnique, 64(2):95-107.

[22]Woon KX, Leung AK, Ng CWW, et al., 2011. An experimental investigation on suction influence zone induced by plant transpiration. Proceedings of the 5th Asia-Pacific Conference on Unsaturated Soils, p.861-866.

[23]Zhan TLT, Ng CWW, Fredlund DG, 2007. Field study of rainfall infiltration into a grassed unsaturated expansive soil slope. Canadian Geotechnical Journal, 44(4):392-408.

Open peer comments: Debate/Discuss/Question/Opinion

<1>

Please provide your name, email address and a comment





Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - 2024 Journal of Zhejiang University-SCIENCE