Photosynthetic and Transpiration Rates of Three Sedum Species Used for Green Roofs
Photosynthetic and Transpiration Rates of Three Sedum Species Used for Green Roofs
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三种用于屋顶绿化的景天属植物的光合和蒸腾速率
DOI：
10.2525/ecb.55.137
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发表时间：
2017
影响因子：
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通讯作者：
Hitoshi Watanabe
中科院分区：
文献类型：
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作者：
Takanori Kuronuma;Hitoshi Watanabe
景天属植物是世界范围内广泛应用于绿色屋顶的营养植物。绿色屋顶技术提供了若干环境益处，例如，建筑物的冷却和隔热（Wong等人，2003; Sailor，2008），缓解城市热岛效应（Susca等人，2011年），雨水管理（Villarreal和Bengtsson，2005年; Getter等人，2007; Rowe，2011）、碳封存和减少空气污染（Yang等人，2008; Getter等人，2009），以及为其他生物提供栖息地（Kadas，2006）。这些好处是由于绿色屋顶上有活的植物和生长介质。研究绿色屋顶植物的生理特性是了解绿色屋顶环境效益的关键。景天属物种使用景天科酸代谢（CAM）光合途径，这在干旱条件下它们的生长中起着至关重要的作用（Yamori等人，2014; Way and Yamori，2014）.此外，几种景天属物种已被描述为“诱导型”CAM植物（Lee和Griffiths，1987; Gravatt和Martin，1992）。它们实际上是C3植物，具有将其碳代谢转换为CAM途径以响应干旱胁迫的能力（Sayed，2001）。这表明景天属植物对土壤水分的生理反应严重影响景天属绿色屋顶的固碳和降温效果。然而，对绿色屋顶中的景天属物种的研究倾向于主要集中在它们的耐旱性上（Dallusso等人，2005; VanWoert等人，2005; Nagase和Dunnett，2010; Thuring等人，2010年），和较少的关注，他们在潮湿条件下的生理特性。研究了3种景天属植物对不同土壤水分状况的生理响应，并与其它2种常用的绿色屋顶植物的光合和蒸腾速率进行了比较。此外，我们还讨论了土壤水分状况对景天属绿色屋顶环境效益的影响。
Sedum species are the most commonly used vegetative plants in extensive green roofs worldwide. Green roof technology provides several environmental benefits, for example, cooling and insulation of buildings (Wong et al., 2003; Sailor, 2008), mitigation of the urban heat-island effect (Susca et al., 2011), stormwater management (Villarreal and Bengtsson, 2005; Getter et al., 2007; Rowe, 2011), carbon sequestration and reduction of air pollution (Yang et al., 2008; Getter et al., 2009), and habitat provision for other organisms (Kadas, 2006). These benefits result from the presence of living plants and growth medium on green roofs. Studying the physiological traits of green roof plants is the key to understanding the environmental benefits of green roofs. Sedum species use the crassulacean acid metabolism (CAM) photosynthetic pathway, which plays a crucial role in their growth under drought conditions (Yamori et al., 2014; Way and Yamori, 2014). In addition, several Sedum species have been described as “inducible” CAM plants (Lee and Griffiths, 1987; Gravatt and Martin, 1992). They are actually C3 plants with an ability to switch their carbon metabolism to the CAM pathway in response to drought stress (Sayed, 2001). This suggests that the physiological responses of Sedum species to soil water regimes severely affect the carbon sequestration and the cooling effect of a Sedum green roof. However, the investigation of Sedum species in green roofs has tended to focus primarily on their drought tolerance (Monterusso et al., 2005; VanWoert et al., 2005; Nagase and Dunnett, 2010; Thuring et al., 2010), and less attention has been paid to their physiological traits in wet conditions. The aim of the present study was to investigate the physiological responses of three Sedum species to different soil water regimes, and compare their photosynthetic and transpiration rates with those of two other commonly used green roof plants. In addition, we discuss the influence of soil water regimes on the environmental benefits of the Sedum green roofs.
DOI：
10.1111/j.1365-313x.2012.05041.x
发表时间：
2012-09
期刊：
The Plant journal : for cell and molecular biology
影响因子：
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作者：
W. Yamori;Chisato Masumoto;H. Fukayama;A. Makino
通讯作者：
W. Yamori;Chisato Masumoto;H. Fukayama;A. Makino
上田，S.：J. Mol。
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