Effectiveness of Conservation Measures in Reducing Runoff and Soil Loss Under Different Magnitude–Frequency Storms at Plot and Catchment Scales in the Semi-arid Agricultural Landscape

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

In this study, multi-year stormflow data collected at both catchment and plot scales on an event basis were used to evaluate the efficiency of conservation. At the catchment scale, soil loss from YDG, an agricultural catchment with no conservation measures, was compared with that from CZG, an agricultural catchment with an implementation of a range of conservation measures. With an increase of storm recurrence intervals in the order of <1, 1–2, 2–5, 5–10, 10–20, and >20 years, the mean event sediment yield was 639, 1721, 5779, 15191, 19627, and 47924 t/km2 in YDG, and was 244, 767, 3077, 4679, 8388, and 15868 t/km2 in CZG, which represented a reduction effectiveness of 61.8, 55.4, 46.7, 69.2, 57.2, and 66.8 %, respectively. Storm events with recurrence intervals greater than 2 years contributed about two-thirds of the total runoff and sediment in both YDG and CZG catchments. At the plot scale, soil loss from one cultivated slopeland was compared with that from five conservation plots. The mean event soil loss was 1622 t/km2 on the cultivated slopeland, in comparison to 27.7 t/km2 on the woodland plot, 213 t/km2 on the grassland plot, 467 t/km2 on the alfalfa plot, 236 t/km2 on the terraceland plot, and 642 t/km2 on the earthbank plot. Soil loss per unit area from all the plots was significantly less than that from the catchments for storms of all categories of recurrence intervals.

Original languageEnglish (US)
Pages (from-to)671-682
Number of pages12
JournalEnvironmental management
Volume57
Issue number3
DOIs
StatePublished - Mar 1 2016

Keywords

  • Catchment and plot
  • China
  • Loess Plateau
  • Recurrence interval
  • Soil conservation measures
  • Soil loss and runoff

Fingerprint Dive into the research topics of 'Effectiveness of Conservation Measures in Reducing Runoff and Soil Loss Under Different Magnitude–Frequency Storms at Plot and Catchment Scales in the Semi-arid Agricultural Landscape'. Together they form a unique fingerprint.

Cite this