alexa Effect of Vegetation Structure on Carbon Assimilation Capacity of Mangrove Ecosystems in the East Coast of Sri Lanka
ISSN: 2473-3350

Journal of Coastal Zone Management
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Research Article

Effect of Vegetation Structure on Carbon Assimilation Capacity of Mangrove Ecosystems in the East Coast of Sri Lanka

KARS Perera1,2* and MD Amarasinghe1

1Department of Botany, University of Kelaniya, Kelaniya, Sri Lanka

2The Open University of Sri Lanka, Nawala, Nugegoda, Sri Lanka

*Corresponding Author:
KARS Perera
Department of Botany
University of Kelaniya, Kelaniya, Sri Lanka
Tel: +817-272-9067
E-mail: [email protected]

Received Date: March 20, 2014; Accepted Date: April 14, 2014; Published Date: April 23, 2014

Citation: KARS Perera and MD Amarasinghe(2014) Effect of Vegetation Structure on Carbon Assimilation Capacity of Mangrove Ecosystems in the East Coast of Sri Lanka. J Coast Dev 17:382. doi:10.4172/ 1410-5217.1000382

Copyright: © 2014 Perera KARS 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

Mangroves are proven as highly potential of providing an efficient carbon sink, both on short and longer time scales. Capacity of carbon sequestration abilities of mangroves is not only a trait that is governed by their genetic make-up, but also by environmental conditions. Total capacity of carbon retention by mangrove ecosystems therefore is partly determined by their vegetation structure.
Vegetation sampling was carried out at six (6) randomly selected locations in mangrove areas of Batticaloa and Uppar lagoons on the east coast of Sri Lanka. Vegetation structure was determined by adopting standard methods and allometric relationships were used to determine mangrove plant biomass. Carbon content was determined by K2Cr2O7 oxidation method.
Rhizophora apiculata and Excoecaria agallocha were the predominant species in Batticaloa mangroves, with representing high IVI values, 83.03 and 174.58 respectively, while Rhizophora mucronata and Avicennia marina were dominant Uppar lagoon with IVI values were 87.73 and 63.94 respectively, may reason of dissimilarities of soil salinity and nature of inundations. Chemical analysis revealed that nearly half of the biomass of wood and roots mangrove species (5) encountered in study area contained organic carbon. Accordingly higher TOC stock was retained by Batticaloa mangroves (149.71 t/ha) than Uppar lagoon mangroves (135.20 t/ha). Positive correlations (p<0.05) were revealed between TOC in mangrove trees with vegetation structural complexity (CI) and leaf area index (LAI), which easily quantify in the field.

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