Fig 1.
Runoff plots of SWCMs in the experimental area.
The bottom half of each actual picture is the schematic diagram.
Table 1.
Design of runoff plots for different conservation measures under citrus trees.
Fig 2.
Characteristics of rainfall distribution from 2001 to 2015.
(a) is Monthly distribution, (b) is the depth of rainfall grade, (c) is the frequency of rainfall grade (d) is the maximum 30-min intensity of rainfall grade.
Table 2.
Water erosion in different individual rainfall grades for the four SWCM treatments.
Fig 3.
Annual runoff and sediment yield for the four treatments.
CT: Clean-tillage, GS: Grass strips, IC: Intercropping, LT: Level terrace.
Table 3.
Annual runoff coefficient (RC) and rainfall erosivity coefficient (REC) of the four treatments in the different periods.
Table 4.
Mann–Kendall trend analysis for runoff (R), runoff coefficient (RC), sediment erosion modulus (SEM), average sediment content (ASC) and rainfall erosivity coefficient (REC).
Fig 4.
Annual runoff coefficient (RC) and rainfall erosivity coefficient (REC) for the SWCMs experimental plots during 2001–2015.
ZR and ZM: Mann–Kendall rank correlation of RC and REC during 2005–2015, respectively.
Fig 5.
Relationship between runoff amount and sediment yield at the monthly scale.
Fig 6.
Variation detection of relationship between runoff and sediment based on moving correlation analysis.
Fig 7.
Double accumulation curves of runoff and sediment on different plots.
Fig 8.
Change of sediment content with time.
The first year series is 2001.