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Asia-Pacific Network for Global Change Research

Asia-Pacific Network for Global Change Research

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Guide for selecting plants for Constructed Floating Wetlands (CFWs) in Sri Lanka

Selecting suitable emergent plant species is a crucial aspect of the success of constructed floating wetlands (CFWs). These plants are pivotal in water purification, pollutant removal, and overall ecosystem health within CFWs. The appropriateness of a plant species is influenced by a range of factors, encompassing both plant-specific characteristics and other non-plant considerations.

The process of selecting plants for CFWs involves three fundamental stages (1) Systematic Literature Review: A comprehensive exploration of existing literature on CFWs contributes to the informed selection of plant species; (2) Preliminary Screening: This step involves assessing whether the plant is locally available, non-invasive, perennial, terrestrial, and adaptable to submerged conditions; and (3) Weighted Scoring: Different plants are assigned weighted scores based on factors such as their contribution to water quality improvement, enhancement of biodiversity, aesthetics, and economic value. The validation of these scores is achieved through on-site data collection.

In Sri Lanka, the guide utilizes the example of Canna Indica, which emerged with a high score during the preliminary screening process among the nine plants assessed.

Complementing this guide is a video that elucidates the significance of CFWs in upholding water cleanliness in Sri Lanka’s lakes, benefiting various applications. Take a moment to watch the video and delve deeper into this innovative and sustainable approach to water management.

Video Link: 

To explore the questionnaire and delve into the details of effective water resource management in Sri Lanka, please follow this link: Questionnaire for Sri Lanka

The project team is delighted to share these valuable resources, hoping they prove to be beneficial and insightful.