Assessing growth performance and deficiency of climber species on tropical greenwalls

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Vertical greening can contribute to urban green infrastructure, urban heat-island amelioration and climate adaptation. Tropical greenwall practice, hindered by inadequate scientific knowledge and experience, can benefit from objective assessment of species performance and growth deficiency. Comprehensive survey of critical climber-plant traits shortlisted 20 potentially suitable species. A climber-selection matrix was established to facilitate species selection and greenwall design. Perennial woody climbers with ornamental flower or foliage and biological potential to reach 13-m height were preferred. They represented two attachment modes, namely mesh-climber and concrete-(bare-wall)climber groups. A field study was designed to monitor their growth from seedlings in experimental plots. Growth conditions were optimized by providing high-quality soil mix and irrigation. The 32-month study period included three active-growing seasons with two interspersed slow-growing seasons. Field assessment methods were developed to acquire systematic data on plant performance indicators and deficiency symptoms. Key attributes were selected to compute climber performance index (CPI) and climber deficiency index (CDI) as synoptic representation of greenwall-application suitability. Mesh-climbers performed much better than concrete-climbers across all key performance indicators, and with notably better CPI. They demonstrated faster establishment and growth rates and more ornamental flowers. The two groups had similar CDI mainly due to insufficient foliage density and foliage loss. For mesh-climbers, Quisqualis indica, Wisteria sinensis and Lonicera japonica had excellent performance, and the remaining species were good to fair. For concrete-climbers, only Parthenocissus dalzielii was rated good and Campsis grandiflora fair, with the rest poor to very poor. Copyright © 2015 Elsevier B.V. All rights reserved.


Original languageEnglish
Pages (from-to)107-121
JournalLandscape and Urban Planning
Volume137
Early online date04 Feb 2015
DOIs
Publication statusPublished - May 2015

Fingerprint

foliage
flower
growing season
heat island
assessment method
soil quality
remediation
infrastructure
seedling
irrigation
matrix
index
climate
indicator
loss
urban green
attribute
field study

Citation

Jim, C. Y. (2015). Assessing growth performance and deficiency of climber species on tropical greenwalls. Landscape and Urban Planning, 137, 107-121. doi: 10.1016/j.landurbplan.2015.01.001

Keywords

  • Greenwall design
  • Vertical greening
  • Climber species selection
  • Stem and foliage density
  • Climber performance index
  • Climber deficiency index