Is it reasonable to use existing outside soil spray seeding technology
to prepare artificial soil under slope aspect and landslide in alpine
area?
Abstract
Knowledge about artificial soil nutrient of cut-slopes associated with
slope aspect and landslide attributes is vital for understanding
cut-slopes environmental ecosystem and establishing sustainable
artificial soil management practices. Our study focuses on cut-slopes
recovered by slope protect technology in alpine region, where slope
aspect (east-, south-, west-, and north-facing slope) and landslide
(non- and landslide) are dominant environment factors. Integrated
matter-element model and path analysis were adopted to investigate the
effects of slope aspect and landslide on the selected soil properties:
pH, soil organic matter (SOM), alkali-hydrolysable nitrogen (AN), total
phosphorus (TP), available phosphorus (AP), and available potassium
(AK). Both slope aspect and landslide had no significant effect on
artificial soil pH (p > 0.05). Statistically significant
differences were found for artificial SOM, AN, TP, AP, and AK between
the slope aspect and landslide (p < 0.05). SOM, nitrogen (N),
and potassium (K) were limiting factors for artificial soil nutrients on
all slope aspect under landslide. N was a limiting factor for artificial
soil nutrients on all slope aspect under non-landslide. K was a limiting
factor for artificial soil nutrients on all slope aspect under
non-landslide, except for non-landslide-north-facing slope, while SOM
was a limiting factor for artificial soil nutrients on
non-landslide-north-facing slope. Landslide and slope aspect had a
highly significant positive correlation with AN and AK, but negative
correlation with AP. Therefore, it is necessary to formulate different
artificial soil management measures for different slope aspect and
landslide to achieve the most effective slope ecological restoration.