Zhou Hongxuan, Hu Dan, Wang Xiaolin, Han Fengsen, Li Yuanzheng, Wu Xiaogang, Ma Shengli
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.
College of Urban and Rural Construction, Shanxi Agricultural University, Taigu County, Shanxi Province, 030801, PR China.
Sci Rep. 2016 Jan 5;6:18790. doi: 10.1038/srep18790.
The temperature of the surface soil layer around different orientation walls was investigated horizontally along several construction-soil micro-gradients in Beijing, China. On a diurnal scale, similar fluctuating trends in T0 and T50 (temperature of surface soil layer, 0 and 0.5 m from the building baseline) adjacent to the external walls of buildings with the same orientation usually appeared under similar micrometeorological conditions. The difference between T0 and T50 (ΔT 0-50) can be considered an indicator of the intensity of the horizontal heat effects: higher ΔT 0-50 values correspond to greater intensities. The values of ΔT 0-50 for south-, north-, east- and west-facing sides of buildings were highest on sunny days in summer and exhibited values of 6.61 K, 1.64 K, 5.93 K and 2.76 K, respectively. The scope of horizontal heat impacts (Sh) changed on a diurnal scale between zero and the maximum, which fluctuated with the micrometeorological conditions. The maximum values of Sh were 0.30, 0.15, 0.20 and 0.20 m for south-, north-, east-, and west-facing walls. The ΔT 0-50 was related to solar radiation, horizontal heat flux, relative humidity, wind speed, soil moisture differences and air temperature; the relative importance of these factors was 36.22%, 31.80%, 19.19%, 2.67%, 3.68% and 6.44%, respectively.
在中国北京，沿着几个建筑 - 土壤微梯度水平方向研究了不同朝向墙体周围表层土壤层的温度。在昼夜尺度上，在相似的微气象条件下，同一朝向建筑物外墙附近的T0和T50（表层土壤层温度，距离建筑物基线0米和0.5米处）通常呈现相似的波动趋势。T0和T50之间的差值（ΔT 0 - 50）可被视为水平热效应强度的一个指标：ΔT 0 - 50值越高，强度越大。建筑物朝南、北、东、西各面的ΔT 0 - 50值在夏季晴天时最高，分别为6.61 K、1.64 K、5.93 K和2.76 K。水平热影响范围（Sh）在昼夜尺度上在零和最大值之间变化，其随微气象条件波动。朝南、北、东、西各面墙体的Sh最大值分别为0.30米、0.15米、0.20米和0.20米。ΔT 0 - 50与太阳辐射、水平热通量、相对湿度、风速、土壤湿度差异和气温有关；这些因素的相对重要性分别为36.22%、31.80%、19.19%、2.67%、3.68%和6.44%。
