Red soil saline-alkali planting under photovoltaic panels

About Red soil saline-alkali planting under photovoltaic panels

This experiment of adding organic fertilizer on saline–alkali-degraded grassland with photovoltaic panels showed that the two restoration measures increased plant diversity and community composition, improved the physical and chemical properties of soil, and directly and indirectly changed the diversity of soil bacteria.

For this purpose, the soil under photovoltaic panels was compared with the GAP area between the panels' arrays and with an adjacent soil not affected by the plant. The main results showed that seven years of soil coverage modified soil fertility with the significant reduction of water holding capacity and soil temperature, while electrical .

In this study, organic fertilizer addition was carried out at saline-and-alkaline-degraded Songnen grassland sites with photovoltaic panels, and we investigated the effects of organic fertilizer treatments on the vegetation and soil bacteria in these areas.

The gap between the upper and lower layers in each photovoltaic panel is approximately 4 cm, causing rainfall to wash away the underlying saline-alkali soils due to gravity at the gap and forming a water area with a width of 3–4 cm. Moss is abundant in these stagnant areas, and the vegetation around the stagnant areas (under the photovoltaic .

Our specific hypotheses were: 1) under control conditions, PSB inoculation would increase the diversity of rhizosphere microorganisms in the soils; 2) under saline and alkaline stress, PSB addition would decrease soil pH and increase available P and N levels; mediate changes in bacterial and fungal diversity and composition within the .

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6 FAQs about [Red soil saline-alkali planting under photovoltaic panels]

Do photovoltaic panels affect soil chemistry 7 years after installation?

The aim of this study was to assess changes of soil physical, chemical and biochemical properties seven years after the installation of the panels. For this purpose, the soil under photovoltaic panels was compared with the GAP area between the panels' arrays and with an adjacent soil not affected by the plant.

How does a photovoltaic power plant improve vegetation growth?

The vegetation has grown well due to the shading, wind-sheltering, and water accumulation effects of the panels. Photovoltaic Power Plant can promote biological soil crusts and improve vegetation growth. The Ca, S and Cl inside the Photovoltaic Power Plant were higher than those outside.

Does a photovoltaic plant increase soil electrical conductivity?

The photovoltaic (PV) plant increased soil electrical conductivity and pH at 20 cm depth. Under PV panels, SOM and microbial activity were lower than between panels rows (GAP). Almost all biochemical properties were increased in GAP soil with respect to the control. The land use change resulted in a striped pattern of soil properties.

Do solar panels promote vegetation growth?

The greater amount of soil moisture under the panels can promote vegetation growth (Makaronidou 2020). Specifically, under rainfall conditions, PV panels concentrate rainfall along the lower edge, thus causing a heterogeneous spatial distribution of soil moisture.

Are ground mounted photovoltaic power plants reversible?

The installation of ground mounted photovoltaic power plants is considered a reversible form of land consumption ( ISPRA, 2018 ). However, even if this transitory soil consumption will last until the panels will be kept on site (on average 20–25 years), the setback on soil quality will certainly have future consequences on agronomic practices.

What is the vegetation around a photovoltaic system (PPP)?

The vegetation around the PPP mainly includes Tamarix elongata, Agropyron desertorum, Suaeda glauca, and Cirsium segetum as well as small distributions of Peganum harmala, Festuca glauca, Nitraria tangutorum and Lycium chinense. The photovoltaic panels have upper and lower layers with an inclination angle of 37°.