alexa Canopy Rainfall Intercepted by Nineteen Tree Species Gr
E-ISSN: 2252-5211

International Journal of Waste Resources
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Research Article

Canopy Rainfall Intercepted by Nineteen Tree Species Grown on a Phytocapped Landfill

Kartik Venkatraman1* and Nanjappa Ashwath2

1East Gippsland Shire Council, 273 Main Street, Bairnsdale, Victoria 3875, Australia

2School of Medical and Applied Science, CQ University, Rockhampton, Qld 4702, Australia

*Corresponding Author:
Kartik Venkatraman
East Gippsland Shire Council, 273 Main Street
Bairnsdale, Victoria 3875, Australia
Tel: 03 5153 9500
E-mail: [email protected]

Received date: December 28, 2015; Accepted date: March 14, 2016; Published date: March 21, 2016

Citation: Venkatraman K, Ashwath N (2016) Canopy Rainfall Intercepted by Nineteen Tree Species Grown on a Phytocapped Landfill. Int J Waste Resour 6:202. doi: 10.4172/2252-5211.1000202

Copyright: © 2016 Venkatraman K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.

 

Abstract

“Phytocapping” is an alternative landfill capping technique that consists of two components, viz. soil cover and vegetation. The soil cover stores water during rainfall events and the vegetation; in this study, trees remove stored water via transpiration and reduce the amount of rain reaching the ground surface via canopy rainfall interception. These attributes contribute significantly to hydrological balance of the phytocap thereby preventing rainwater from entering the buried waste. Canopy rainfall interception was studied for the first time in 19 tree species grown in a landfill environment. Various parameters contributing to canopy interception were monitored over 2 years using 19 tree species that were established on two types of phytocaps (Thick cap 1400 mm soil and Thin cap 700 mm soil). Stemflow and throughfall were determined during 50 rainfall events over two years. Results showed that the established species were able to intercept up to 50% of the rainfall on a per storm basis, with an overall average of 30%. Stemflow also varied between species, but its overall contribution to site water balance was only 4.5% of the total rainfall received.

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