+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Erosion processes on arid minespoil slopes

, : Erosion processes on arid minespoil slopes. Soil Science Society Of America Journal. 57(5): 1341-1347

Surface wash and dry ravel erosion rates from minespoil were measured for 4.7 yr after initial reclamation at a site in western Nevada. Average annual total erosion from all 15 plots ranged from 0.48 to 1.10 Mg ha-1. Neither mulching treatment nor slope gradient (3:1 vs. 2:1) significantly affected surface wash from reclaimed minespoils. About 70% of the total wash load from the entire study period occurred during two midsummer to autumn periods (1989 and 1990) in which the most intense storms occurred. Southwest-facing slopes (windward) had significantly higher surface erosion compared with northeast-facing slopes (leeward). The higher surface roughness encountered on 2:1 slopes appeared to more effectively control surface wash than gentler (3:1) slope gradients or early-stage vegetative cover. Straw mulch significantly reduced ravel erosion from the relatively smooth 3:1 slopes. Mulch treatment was not effective in reducing ravel erosion from rougher, 2:1 slopes. Windward (southwest-facing) slopes had significantly higher ravel erosion than northeast-facing slopes. Ravel rates were not as directly affected by rainfall intensity as were surface wash rates. Regressions of surface wash with EI (rainfall energy-intensity factor) were best with short-term intensities (i.e., EI5, R2 = 0.94); regressions of ravel with EI were best using longer term intensities (EI30; R2 = 0.83). Except for very dry collection periods (including autumn to spring), surface wash exceeded ravel.


DOI: 10.2136/sssaj1993.03615995005700050030x

Other references

Bearden, S.; Uthman, B., 2009: Cerebral hemodynamic compromise associated with limb shaking TIA and focal EEG slowing. We report four cases of cerebral hemodynamic compromise identified over a five year period. Cerebral hemodynamic compromise is characterized by reversible attacks of regional cerebral ischemia affecting patients with occlusive disease of main arte...

Severance, G.; Walsh, L., 2014: Rehabilitation after bilateral hand transplantation in the quadrimembral patient: review and recommendations. The hand transplantation is a unique entity in the fields of medicine and rehabilitation. Hand therapy and rehabilitation programs are consistently reported as essential to a successful functional outcome for the hand transplant patient. In Septem...

Haddad, F.; Baldwin, K.M., 1991: Effect of increased carbohydrate utilization potential on cardiac isomyosin in thyroidectomized rats. Previous studies have shown that dietary carbohydrates (CHO) can impact on cardiac isomyosin expression in hormonally deficient animals. The primary objective of this study was to determine whether a high-CHO diet alters cardiac isomyosin expressi...

Spier, H.W.; Meyer, W.F., 1970: Expedient microscopic fungi demonstration. Zeitschrift für Haut- und Geschlechtskrankheiten 45(17): 601-604

Barbarini, G.; Lopez, S.; Strepparola, G.; Monolo, G.; Bissolati, M.; Patruno, S.F.A.; Filice, C., 1994: Combined therapy with zidovudine plus alpha interferon 2b R A controlled study on 200 asymptomatic HIV positive IVDA. AIDS (Philadelphia) 8(SUPPL 4): S24

Cohen, S.Z.; Reid, W.J.; Berg, L.K., 1975: Measuring agency investment in community mental health. This paper reports a study of the extent to which essential elements of community mental health are part of mental health agencies' practices. A sample of 263 social workers reported on the nature of programming and services of 19 mental heal...

Uchoa Manoel A.; Caires, C.S.; Nicacio, J.N.; Duarte, M., 2012: Frugivory of neosilba species diptera lonchaeidae and thepytus echelta lepidoptera lycaenidae on psittacanthus santalales loranthaceae in ecotonal cerrado-south pantanal, brazil. This paper presents a survey of the insects that feed on fruits of Psittacanthus Martius (Santalales: Loranthaceae), a hemiparasitic mistletoe genus that infects trees in Brazil and other neotropical countries. The aim of the study was to identify...

Segal S.; Dmitrovsky E., 1986: The involvement of the c myc gene in differentiation of f 9 teratocarcinoma stem cells. Journal of Cellular Biochemistry Supplement (10 PART A): 26

Adler, B.A.; Crowley, W.R., 1986: Evidence for gamma-aminobutyric acid modulation of ovarian hormonal effects on luteinizing hormone secretion and hypothalamic catecholamine activity in the female rat. Recent evidence suggests that gamma-aminobutyric acid (GABA)-containing neurons may inhibit LH release under certain circumstances. The present experiments tested whether GABA agonists block the LH surge induced in ovariectomized rats by estradiol...

Djordjevic; Hetherington; Thorpe, 1996: Spectral function for a conducting sheet containing circular inclusions. Physical Review. B, Condensed Matter 53(22): 14862-14871