Cooling and humidifying effect of plant communities in subtropical urban parks |
| |
| Authors: | Zhe Zhang Yingmin Lv Huitang Pan |
| |
| Institution: | 1. Department of Ornamental Horticulture, College of Landscape Architecture, Beijing Forestry University, Beijing 100083, China;2. National Engineering Research Center for Floriculture, Beijing 100083, China;1. School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, Durban 4000, South Africa;2. School of Life Sciences, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, Durban 4000, South Africa;3. Randles Nursery, eThekwini Municipality, 62 Burnwood Road, Sydenham, Durban 4091, South Africa;1. Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Aomori, Japan;2. Arid Land Research Center, Tottori University, Hamasaka 1390, Tottori, Japan;3. Department of Ecoregion Science, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan;1. School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, China;2. Faculty of Environmental Engineering, The University of Kitakyushu, Japan;3. Beijing Building Technology Development Co., Ltd, China;1. Hydrospheric Atmospheric Research Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan;2. Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan;1. School of Civil Engineering, Architecture and Urban Design, State University of Campinas, Rua Saturnino de Brito, 224, 13083-850 Campinas, Brazil;2. Faculty of Environment and Natural Resource, Albert-Ludwigs-University Freiburg, Werthmannstrasse 10, D-79085 Freiburg, Germany;1. Department of Geography, Johannes-Gutenberg University, Mainz, Germany;2. Swiss Federal Research Institute WSL, Birmensdorf, Switzerland |
| |
| Abstract: | Urban vegetation has been proved to play an important role in mitigating the heat island effect. However, it is not clear how independent small-scale plant communities affected the microclimate. In this paper, the effects of fifteen plant communities on temperature and relative humidity were investigated from November 2010 to October 2011 in urban parks in subtropical Shenzhen City, China. The canopy density, canopy area, tree height and the background climate conditions under plant communities were measured. The effects of small-scale plant communities on temperature and relative humidity were the most significant at 1400–1500 h during the day. The temperature reduction and relative humidity increase due to small-scale plant communities were higher in summer, followed by autumn, spring and winter. As compared to the control open sites, the temperature reduction due to plant communities ranged from 2.14 °C to 5.15 °C, and the relative humidity increase ranged from 6.21% to 8.30%. We found that multilayer plant communities were the most effective in terms of their cooling and humidifying effect, while bamboo groves were the least effective. Regression results revealed that four factors, namely canopy density, canopy area, tree height and solar radiation, had significant influence on temperature reduction and relative humidity increase. |
| |
| Keywords: | Microclimate Plant community structure Small-scale plant landscape Urban greening |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
