Qinghai–Tibet solar array created cooler, wetter ground with more vegetation and pika-and-zokor activity
The solar panel is supposed to harvest the energy from sunlight, yet its physical presence affects much more than the electrical grid. On the plateau of Qinghai-Tibet, wide areas of dark glass panels create dense shades on delicate alpine grasslands.
One half of a metal pole remains hidden in the moist shade, while only several meters away, soil dries up with all the sunlight and wind.
While studying a gigantic solar power station with a capacity of 40 megawatts, scientists found out that such man-made structures do not just prevent the sunlight from reaching the surface; they completely transform it.
Results showed that the solar field was overall cooler, wetter, and less windy and had lower rates of evaporation compared to the adjacent grazed or fenced pastures.
The panels altered the ground first
The study was carried out in the Nima Town Photovoltaic Station in Maqu County, at a height of 11,316 feet above sea level. In this area, the solar panels are raised about 5.9 feet from the ground, have 11.5-foot intervals between the rows, and follow the sun’s movement along the north-south axis.
This geometry creates three different micro-habitats in the open grassland: the shaded ground under the center of the panels, the drip lines at the edge of the panels, and the open areas between the rows.
Results showed that the solar field was overall cooler, wetter, and less windy and had lower rates of evaporation compared to the adjacent grazed or fenced pastures.
Most importantly, the soil was highly moistened along the edges of the panels, whereas the inter-panel spaces were bright, warm, and windy.
What could grow there was affected by the shade
Plant life adjusted to the artificially created environment. The vegetation in the solar park was taller, greener, and more diversified compared to the heavily grazed grasslands located beyond the boundary fence.
The vegetation growing around the edges of the solar panels was the most prolific, as the plants benefited from the water flowing from the glass panels.
Unshaded spaces located between rows of panels were associated with greater plant diversity.
Instead of forming a uniform oasis, the solar array divided the grassland into a checkered landscape of microhabitats.
Every thin strip of land provided a specific combination of lighting, moisture, soil temperature, and wind cover.
Different elements of the array were utilized by pikas and zokors
The native animals showed great selectivity regarding these microclimate variations. The plateau pika, an important animal to the plateau ecosystem which is small and diurnal, made burrows directly under panel centers.
The underground plateau zokors, on the other hand, created entirely new physical evidence. Fresh piles of soil appeared near the edges of panels; locations where moisture content was maximum and digging would be easiest.
Burrowing activity for both mammals was noticeably less in unshaded, over-grazed areas beyond the array.
The change in the ground brought additional feed sources and softer, moistened soil, attracting mammals to certain areas within the solar park.
Burrows are signs of activity but not of population
The authors advise that one should be careful interpreting these results. This research involved measurements of active burrow entrances and soil mounds, indicating animal activity; therefore, an increase in the number of mounds does not necessarily imply a bigger animal population.
Additionally, the research was conducted in July 2023 after five years of facility operation.
Since the researchers compared neighboring solar, fenced, and grazed areas and did not follow the area prior to construction, the presented results are good examples of strong ecological connections but not direct causation.
Nevertheless, the physical connection between microclimate modification and animal activity is evident and irrefutable.
A solar farm turned into a diverse habitat mosaic
It has been demonstrated by statistical models that microclimate variations were acting as the main factor throughout the whole food chain.
Different microclimates with regard to temperature, humidity, and winds have impacted the development of soil composition, mammals’ activities, and even microorganisms inhabiting the soil.
The greatest microbial diversity and population have been found in the areas between panels, whereas panels provided an opportunity for the development of specific microbial communities.
And the ultimate truth here is that renewable energy facilities are not only occupying lands but also becoming effective architects of ecology.
Thanks to the creation of various microhabitats on a previously homogenous high-altitude meadow, solar power facilities create hotspots of multi-trophic diversity in industrial locations.
All the details of the study can be found here: Guo, Y., Sun, W., Xue, F., Zhu, X., Yang, H., & Hua, L. (2026). Photovoltaic arrays reshape multitrophic biodiversity through spatial heterogeneity in Qinghai Tibet Plateau alpine meadows. iScience, 29(8).
Kelly is an experienced writer with 15 years of experience exploring the big stories that shape our world, from tech breakthroughs and space exploration to climate, energy, and the fascinating quirks of science. She has a talent for turning complex ideas into sharp, memorable insights that stay with readers long after they’ve finished reading.
