The microclimatic and ecohydrological effects of photovoltaic facilities in arid/semi-arid regions of China: An integrated modeling study.

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ID: 282013
2025
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Abstract
Photovoltaic (PV) facilities play a pivotal role in restructuring energy systems and mitigating carbon emissions. However, they also alter local microclimates and ecohydrological conditions, especially in arid and semi-arid regions. Most existing studies focus on individual environmental factors and overlook the coupled interactions among soil, vegetation, atmosphere, and PV infrastructure. To address this, we developed a novel soil-plant-PV-atmosphere continuum (SPPVAC) model that integrates airflow, heat, and moisture transport processes with vegetation dynamics. The model was validated with field observations and applied to a representative PV site in Zhangjiakou, northern China. Results show that PV facilities reduce wind speed by 27.6-42.3 %, increase air temperature by 2.31 °C, and raise humidity by 35.8 % in sheltered areas. These microclimatic changes enhance biomass productivity of soybean, alfalfa, and parsnip by 48.3 %, 42.9 %, and 26.7 %, respectively. Crops with higher leaf area density exhibited stronger transpiration and microclimate regulation. This study provides an integrated simulation framework to evaluate microclimate-vegetation feedback under PV systems and offers crop-specific insights for optimizing agrivoltaic design. The findings highlight the potential of PV infrastructure to support both renewable energy generation and ecological restoration.
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Authors Sun, Jingbo; Cui, Wenrui; Wang, Wenhui; Yang, Xiaofan
Journal Journal of environmental management
Year 2025
DOI
10.1016/j.jenvman.2025.125395
URL
Keywords
computational fluid dynamics numerical simulations ecohydrological effects microclimate photovoltaic facilities

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