Evapotranspiration measurement and estimation of crop coefficient for native plant species of green roof in the tropics
Crops; Evapotranspiration; Moisture control; Soil moisture; Tropics; Wind; Different substrates; Environmental parameter; Extensive green roofs; Reference evapotranspiration; Soil moisture sensors; Tropical climates; Urban stormwater management; Water retention capacity; Roofs; absorption coefficien...
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my.uniten.dspace-261502023-05-29T17:07:13Z Evapotranspiration measurement and estimation of crop coefficient for native plant species of green roof in the tropics Chow M.F. Bakar M.F.A. Wong J.K. Ling L. 57214146115 57199742143 57194870148 56203785300 Crops; Evapotranspiration; Moisture control; Soil moisture; Tropics; Wind; Different substrates; Environmental parameter; Extensive green roofs; Reference evapotranspiration; Soil moisture sensors; Tropical climates; Urban stormwater management; Water retention capacity; Roofs; absorption coefficient; estimation method; evapotranspiration; grass; measurement method; native species; roof; runoff; soil moisture; tropical region; wastewater treatment; Axonopus compressus Extensive green roof is one of the sustainable urban stormwater management alternatives to manage and mitigate the urban surface runoff. In order to implement green roofs more effectively, suitable plant species and substrate components for tropical climate must be identified. The aim of this study is to investigate the evapotranspiration (ET) behaviors in extensive green roofs based on different substrate types and local native plant species. Four green roof test beds containing pro-mixing pot and burn soils were each vegetated with Axonopus Compressus (grass) and Portu-laca Grandiflora (sedum). A weather station with soil moisture sensors was installed to measure the weather and soil moisture data. The results showed that the mean ET rates for grass-pot soil, sedum-pot soil, grass-burn soil and sedum-burn soil were 1.32 � 0.41 mm/day, 2.31 � 0.72 mm/day, 1.47 � 0.39 mm/day and 2.31 � 0.43 mm/day, respectively. It is noted that environmental parameters such as ambient temperature, solar radiation and wind speed showed significantly positive relationship (p value <0.01) with ET rates of green roofs except relative humidity. The crop coefficients (Ks ) for the studied green roof plant species are estimated based on actual and reference evapotranspiration rates. The sedum planted in burn soil showed the highest crop coefficient (0.64), followed by sedum in pot soil (0.62), grass in burn soil (0.39) and grass in pot soils (0.37), respectively. The findings in this study also showed that substrate with better water retention capacity generally improved the Ks values. � 2021 by the authors. Licensee MDPI, Basel, Switzerland. Final 2023-05-29T09:07:13Z 2023-05-29T09:07:13Z 2021 Article 10.3390/w13121669 2-s2.0-85108991821 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108991821&doi=10.3390%2fw13121669&partnerID=40&md5=232f6e87995e1aa0ff3007a124b07171 https://irepository.uniten.edu.my/handle/123456789/26150 13 12 1669 All Open Access, Gold MDPI AG Scopus |
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| description |
Crops; Evapotranspiration; Moisture control; Soil moisture; Tropics; Wind; Different substrates; Environmental parameter; Extensive green roofs; Reference evapotranspiration; Soil moisture sensors; Tropical climates; Urban stormwater management; Water retention capacity; Roofs; absorption coefficient; estimation method; evapotranspiration; grass; measurement method; native species; roof; runoff; soil moisture; tropical region; wastewater treatment; Axonopus compressus |
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57214146115 |
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57214146115 Chow M.F. Bakar M.F.A. Wong J.K. Ling L. |
| format |
Article |
| author |
Chow M.F. Bakar M.F.A. Wong J.K. Ling L. |
| spellingShingle |
Chow M.F. Bakar M.F.A. Wong J.K. Ling L. Evapotranspiration measurement and estimation of crop coefficient for native plant species of green roof in the tropics |
| author_sort |
Chow M.F. |
| title |
Evapotranspiration measurement and estimation of crop coefficient for native plant species of green roof in the tropics |
| title_short |
Evapotranspiration measurement and estimation of crop coefficient for native plant species of green roof in the tropics |
| title_full |
Evapotranspiration measurement and estimation of crop coefficient for native plant species of green roof in the tropics |
| title_fullStr |
Evapotranspiration measurement and estimation of crop coefficient for native plant species of green roof in the tropics |
| title_full_unstemmed |
Evapotranspiration measurement and estimation of crop coefficient for native plant species of green roof in the tropics |
| title_sort |
evapotranspiration measurement and estimation of crop coefficient for native plant species of green roof in the tropics |
| publisher |
MDPI AG |
| publishDate |
2023 |
| _version_ |
1806427896586174464 |
| score |
13.211869 |