Hardscape & Grading第 66 / 100 题
On a steep planted slope, which practice BEST controls erosion during establishment?
a.Erosion-control blankets, mulch, and quick-establishing groundcover
b.Bare soil left exposed
c.Smooth compaction with no plants
d.Frequent heavy flood irrigation
解析
Covering a slope with erosion-control blankets or netting, mulch, and fast-establishing groundcover protects the soil surface from rain impact and runoff until roots hold it. Bare or heavily flooded slopes erode and rill quickly. Vegetation and surface protection together stabilize the slope.
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