Zhenghuan Zhou’s research while affiliated with Nanjing Tech University and other places

A Living wall system (LWS) is a biophilic design element that has been introduced into indoor environments in recent years. Previous studies have demonstrated that the LWS improves indoor visual comfort and air quality. However, studies on its psychological effects on occupants are still scarce. In this paper, the psychological effects were investigated by recording and analyzing the parameters of occupants’ physiological responses including an electroencephalogram (EEG) and heart rate variability (HRV). A cross-over experiment was conducted among 43 participants under three different desk work environments based on various materials involving an LWS, a fake LWS, and a bare white wall. The results conclude that LWSs effectively reduce the accumulation speed of negative psychological states caused by desk work to about 1/3, compared with a regular office environment without an LWS. However, occupants tend to be less excited and focused after resting in the LWS environment. Therefore, it is recommended to place LWSs in the rest area rather than close to the desk area in an office building, considering the balance between mental health and work efficiency.

Sustainable cities are increasingly requiring local food systems. On the contrary, food self-sufficiency rate in many cities is continuously decreasing. In recent years, the concept of vertical farming (VF) has begun to show its advantages in providing a promising hope for alleviating this contradiction. However, there are few studies on the potential of VF on a city scale. This paper aims to assess the economic feasibility of an urban family vertical farming (UFVF) in Shanghai newly-built residential by modeling typical family planting mode, and using the evaluation software of vertical farms (VFer) software for calculation. Meanwhile, the influence of UFVF on the self-sufficiency rate of vegetables and fruits of households and the whole city is investigated. The results demonstrate that the UFVF contributes to increasing the self-sufficiency rate of vegetables and fruits by 20.68 % and 2.54 %, respectively, which could be important to enhance the resilience of local food system. Additionally, the return on investment of UFVF could achieve approximately 30 %. The proposed techno-economic model can assist to better predicting the small-scale VF on the urban scale, which provides a basis for decision-making on development of sustainable urban agriculture.

Vertical farming is a new branch of urban agriculture using indoor vertical space and soil-less cultivation technology to obtain agricultural products. Despite its many advantages over traditional farming, it still faces some challenges and obstacles, including high energy consumption and costs, as well as uncertainty and a lack of social acceptance. This study aims to investigate the influence of public acceptance on micro-vertical farming based on the deconstructed theory of planned behavior model. This model is adopted for statistical analysis to reveal the factors and their weights in influencing people’s behavioral intentions. The results indicate that the overall mean of the public’s behavioral intentions to use vertical farming is 3.9, which is above neutral (M = 3.00) but less than positive (M = 4.00). Differences in age, education level, and the living area of the public have significantly impacted behavioral intentions. Meanwhile, the statistical results support the hypotheses concerning the behavioral attitudes, subjective norms, and perceived behavioral control of the model, and also demonstrate that their decomposed belief structures considerably influence the public’s behavioral intentions to use vertical farming. Notably, perceived usefulness is the most critical driving factor in planting using vertical farming. The findings of this study contribute to better predictions of the effects of different elements of behavioral intention on vertical farming at the urban scale, which may provide a basis for decision making in the development of sustainable urban agriculture.