水保所知识产出(1956---)知识库

The widespread construction of photovoltaic power stations within northwest China
poses an environmental threat because of severe increased wind erosion and land
degradation. Engineering, plant, and biocrust treatments were evaluated in this study
for their effectiveness in the reduction of wind erosion. The placement of solar
panels caused wind speed variation and resulted in distinct abrasion and deposition
zones between the rows of the solar panels and the formation of deflation zones
under the solar panels. Combined treatments (gravel and red clay mulch were applied
within the abrasion and deposition zones, respectively) and moss-crust were the opti-
mal choices within the engineering and biocrust treatments, respectively. We found
that for engineering treatments, the combined procedures led to treatments had sand
transport rate reductions of 87%, while the straw checkerboard, gravel, and red clay
treatments gave reductions of 51, 78, and 74%, respectively. Within the biocrust
treatments, the moss-crust decreased the sand transport rates and the sand erosion–
deposit budget by 71 and 114%, respectively, while the cyanobacteria crust caused
reductions of 65 and 109%, respectively, in comparison to the control. Both plant
treatments decreased the sand transport rates and the sand erosion–deposit budgets,
but were inferior to other optimal treatments with the best plant treatment depen-
dent on the placement pattern used for plant establishment. All the treatments had
effects on reducing wind erosion, and we strongly recommend the use of moss-crust
and combined treatments in the deflation zones and between the rows of the solar
panels, respectively, to significantly reduce the severe wind erosion occurring at
these photovoltaic power stations located in sandy areas.