| 摘要: |
| 半地下建筑覆土绿化是中国大城市应对土地资源匮
乏和城市绿化率低的特色举措之一。通过构建半地下建筑进行
顶板绿化，开展不同覆土厚度的生态效益研究，结果表明：
1)覆土后，绿化生态效益显著优于不覆土对照，且土层越厚，
生态效益越好，其中1.5m覆土生态效益最佳；2)覆土厚度
与建筑屋顶内外能量流动负相关，与土壤蓄水能力正相关，
0.5m以上覆土厚度处理可将屋顶热量交换降低80%~90%，
可蓄积90%以上的雨水；3)覆土0.5m以上即可达到夏季降
温、冬季保暖的显著效果，相比不覆土对照，夏季室温可降低
2~3℃，冬季室温可升高1~3℃。研究结果可为我国地下空间
覆土绿化土层厚度的确定和应用提供科学依据。 |
| 关键词: 风景园林 半地下建筑覆土绿化 覆土厚度 生态
效益 蓄积雨水 室内温度 热通量 |
| DOI： |
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| 基金项目: |
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| A Study on the Ecological Benefits of Greenings with Different Thicknesses of Covering Soil on the Top of Semi-underground Building Roofs |
| SUN Hongyan,XIE Junfei,SHU Jianhua,LI Yanming |
| Abstract: |
| Semi-underground building covered with greening
soil is a characteristic measure to deal with the shortage of land
resources and the low greening rate of cities in China. In this study,
the ecological benefits of different thickness of covering greening
soil were studied by constructing semi-underground buildings. The
results showed that: 1) the ecological benefit of building covered
with soil is significantly better than that without soil covering; and
the thicker the soil layer was, the better the ecological benefit was.
The ecological benefit of 1.5m soil covering was the best; 2) the
thickness of covering soil was negatively correlated with energy
flow inside and outside the building roof, but positively correlated
with soil water storage capacity, and when the thickness of covering
soil was more than 0.5m, the heat exchange of roof can be reduced
by 80% - 90%, while more than 90% of rainwater can be stored;
3) covering soil with thickness over 0.5m can reduce the building
indoor temperature in summer and keep warm in winter, and the
room temperature was 2-3℃ lower in summer and 1-3℃ higher
in winter than that without soil covering. This study can provide a
scientific basis for formulating the thickness standard of greening
soil layer on semi-underground spaces. |
| Key words: landscape architecture greening of semi-underground
building covered with soil thickness of covering soil ecological
benefit rainwater storage indoor temperature heat flux |
