ORIGINAL RESEARCH
Spatial Heterogeneity of Vegetation Communities
and Soil Properties in a Desert Solar Photovoltaic
Power Station of the Hexi Corridor,
Northwestern China
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1
College of Management, Northwest Minzu University, Lanzhou, 730030, China
2
State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating,
Gansu Desert Control Research Institute, Lanzhou 730070, China
3
Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources,
Chinese Academy of Sciences, Lanzhou, Gansu 730000, China
4
College of Urban Environment, Lanzhou City University, Lanzhou, Gansu 730070, China
Submission date: 2022-10-15
Final revision date: 2023-01-31
Acceptance date: 2023-02-02
Online publication date: 2023-03-08
Publication date: 2023-05-18
Pol. J. Environ. Stud. 2023;32(3):2795-2807
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ABSTRACT
Arid sandy areas have great potential for producing solar power, so many solar photovoltaic (PV)
systems have been constructed in desert regions. Hexi corridor, a typical and broadly representative
desert ecosystem in northwestern China, is well-known for its abundant sunshine and great numbers of
solar PV systems. However, spatial heterogeneity in vegetation and soil properties across different PV
panel locations in Hexi Corridor remain unclear to date. To address this gap, we evaluated the spatial
heterogeneity of the vegetation community, and soil properties in and near a PV station in a desert
region of the Hexi corridor. Measurements were conducted at six locations under and around the panels,
and at distances of 200 to 600 m from the panels. Results show that the aboveground biomass (AGB)
and three plant diversity indices differed from locations inside and outside the PV station. Soil water
contents to a depth of 30 cm were greatest under the panels. Soil organic carbon (SOC) inside the PV
station was higher than outside the PV station, and was increased with increasing distance from the
panels. On the contrary, total nitrogen (TN) contents inside the PV station was lower than those outside
the PV station. The differences in plant diversity indices, SOC, and TN between inside and outside
were generally not significant. Our results indicate that solar PV construction on sandy land of the Hexi
Corridor impact the spatial distribution of vegetation and soil properties, and the positive effects of PV
panels on vegetation and soil may outweigh the negative effects.