Water and Thermal Regime of Extensive Green Roof Test Beds Planted with Sedum Cuttings and Sedum Carpets

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F21%3A00342998" target="_blank" >RIV/68407700:21720/21:00342998 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21110/21:00342998

Result on the web

<a href="https://doi.org/10.1007/s11368-020-02778-x" target="_blank" >https://doi.org/10.1007/s11368-020-02778-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11368-020-02778-x" target="_blank" >10.1007/s11368-020-02778-x</a>

Result language

angličtina

Original language name

Water and Thermal Regime of Extensive Green Roof Test Beds Planted with Sedum Cuttings and Sedum Carpets

Original language description

Implementation of green roofs could help to reduce rapid runoff and help cities to mitigate heat islands. The aim of the study is to assess the water and temperature regimes of four experimental green roof test beds having different growing media and plant coverage during the vegetation season 2018. Experiments were conducted in four test beds (1 x 1 m) established on a flat roof. Two types of growing media were used. The first (A) was a substrate composed of crushed spongolite, crushed expanded clay, and peat. The second (B) was a coarser substrate, composed of crushed expanded clay, crushed bricks, peat, and compost. Two test beds, hereafter designated ACu and BCu, were filled with substrates A and B respectively and planted with a mixture of Sedum spp. cuttings with approximately 10% coverage. The substrate thickness was 6 cm. Two other test beds, designated ACa and BCa, were filled to a depth of 4 cm with A and B growing media, respectively, and planted with a carpet of Sedum spp. with approximate coverage of 100%. The experiment was conducted over one growing season. Continuous monitoring of substrate temperature, water content, and outflow was conducted on each test bed. The lowest runoff coefficient was observed in test bed ACu, while the highest runoff occurred in test bed BCu, with twice the amount of outflow as ACu. The total runoff coefficient of ACa was more than one-third higher than that of ACu. The lowest maximum substrate temperature on the hottest day of the season was observed in bed ACa with a temperature of 40.6 °C, while the highest temperature was seen in bed BCu, 7.9 °C higher. The analysis of the rainfall-runoff relationship calculated for individual rainfall events demonstrated that runoff coefficients depended on initial water content, rainfall intensity, rainfall depth, substrate type, and vegetation cover. Beds planted with sedum carpets and having more extensive vegetation coverage were superior at moderating extremes of temperature.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Soils and Sediments

ISSN

1439-0108

e-ISSN

1614-7480

Volume of the periodical

21

Issue of the periodical within the volume

5

Country of publishing house

DE - GERMANY

Number of pages

13

Pages from-to

2089-2101

UT code for WoS article

000572318500001

EID of the result in the Scopus database

2-s2.0-85088822140