Table 6 Spatiotemporal area, trends and quantified each soil loss rate in the Zoa watershed during 1985–2021
Mean soil loss rate (t ha−1 year−1) | 1985 | 2000 | 2021 | 1985–2000 | 2000–2021 | 1985–2021 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Area (ha) | % | Area (ha) | % | Area (ha) | % | Area (ha) | % | Area (ha) | % | Area (ha) | % | |
0–5 | 39,547.91 | 66.02 | 38,710.10 | 64.62 | 23,424.19 | 39.10 | − 837.81 | − 2.12 | − 15,285.91 | − 39.49 | − 16,123.72 | − 40.77 |
5–11 | 10,394.15 | 17.35 | 9382.03 | 15.66 | 12,470.63 | 20.82 | − 1012.11 | − 9.74 | 3088.60 | 32.92 | 2076.48 | 19.98 |
11–30 | 7385.82 | 12.33 | 6798.10 | 11.35 | 14,259.50 | 23.80 | − 587.72 | − 7.96 | 7461.40 | 109.76 | 6873.68 | 93.07 |
30–50 | 1336.93 | 2.23 | 1822.94 | 3.04 | 3553.40 | 5.93 | 486.01 | 36.35 | 1730.46 | 94.93 | 2216.47 | 165.79 |
> 50 | 1236.99 | 2.07 | 3188.63 | 5.32 | 6194.08 | 10.34 | 1951.63 | 157.77 | 3005.45 | 94.26 | 4957.09 | 400.74 |
Total | 59,901.8 | 100 | 59,901.8 | 100 | 59,901.8 | 100 | − | − | − | − | − | − |