Soil erosion on alfisols in Western Nigeria: I. Effects of slope, crop rotation and residue management
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Cited by (61)
From hillslopes to watersheds: Variability in model outcomes with the USLE
2021, Environmental Modelling and SoftwareCitation Excerpt :However, Barrow (1991) estimate is derived from Lal et al. (1989; Table III) using a synthesis of research from 24 countries that includes the following disclaimer: “The data used in this table comes from a wide range of sources and is derived through a wide range of sampling methodologies; it is therefore not standardized and serves as only a general indication” (Table, 10.6; Barrow, 1991). While this synthesis of research is useful and informative, the soil erosion rates found in Table, III of Lal et al. (1989) are sourced from eight different documents (Barber 1983; Fournier 1967; Humphreys 1984; Lal 1976a, 1976b; Ngatunga et al., 1984; Roose 1977; World Resources Institute 1986) which are mostly inaccessible, and the few that are available were based on small plot-based studies (e.g., Tanzania; Ngatunga et al., 1984). Lal et al. (1989) warn that “the data obtained from small plots are often not comparable … misinterpretation and erroneous conclusions are major worries when using such data” (p. 58).
Variable scale effects on hillslope soil erosion during rainfall-runoff processes
2021, CatenaCitation Excerpt :Understanding the influence of scale on soil erosion processes is an important, crosscutting issue in hydrological, geomorphological, and ecological sciences (Lal, 1984; Cammeraat, 2002; Yair and Raz-Yassif, 2004; Newman et al., 2006; Polyakov and Lal, 2008; Bagarello and Ferro, 2010; Xing et al., 2016; Sidle et al., 2017; Poesen, 2018; Wu et al., 2019). In particular, widely applied soil erosion models, e.g., the Universal Soil Loss Equation (USLE) and the Revised Universal Soil Loss Equation (RUSLE), use the scaling law of erosion to predict soil loss, geomorphic evolution, which allows formulating soil conservation strategies in plots of different sizes (Lal, 1976; Wischmeier and Smith, 1978; Renard et al., 1991; Heung et al., 2013; Fernández and Vega,2016; Karamesouti et al., 2016; Di Stefano et al., 2017b; Zhang et al., 2017; Bagarello et al., 2018a; Zerihun et al., 2018). Moreover, the spatial variability in soil loss due to the effect of scale is critical for understanding ecosystem functions and degradation processes in water-restricted environments, where ecological and hydrological processes are tightly coupled (Okin et al., 2009; Moreno-de las Heras et al., 2010; Prats et al., 2016).
Accelerated Soil erosion as a source of atmospheric CO<inf>2</inf>
2019, Soil and Tillage ResearchCitation Excerpt :In general, the eroded material has a high CER since it is preferentially removed because of its low density (0.6–0.8 Mg/m3) and that it is concentrated in vicinity of soil surface. High CER has been reported for eroded sediments from soils of the tropics (Lal, 1976a; Wan and El-Swaify, 1998) and temperate regions (Schiettecatte et al., 2008). Among several factors, the CER also depends on slope length, and decreases with increase in slope length (Müller-Nedebock et al., 2016).
On-farm gains and losses of soil organic carbon in terrestrial hydrological pathways: A review of empirical research
2016, International Soil and Water Conservation ResearchSoil erosion under teak (Tectona grandis L.f.) plantations: General patterns, assumptions and controversies
2014, CatenaCitation Excerpt :According to the FAO (1980) classification of soil erosion rates, moderate soil and litter accumulation was observed under secondary forests, while low rates of soil loss were recorded in plantations of mature teak and young teak clones, and moderate rates of soil loss in coppiced young teak plantations (Table 2). The reported results (Fig. 1) agree with the theory which states that annual erosion rates are mainly originated by a few individual storms of higher intensity than normal (e.g. Lal, 1976; Zimmermann et al., 2012). In these extreme rain events, rain intensity largely exceeds soil infiltration and hydraulic conductivity, generating overland flow and runoff (eg.
Soil organic carbon fraction losses upon continuous plow-based tillage and its restoration by diverse biomass-C inputs under no-till in sub-tropical and tropical regions of Brazil
2013, GeodermaCitation Excerpt :The primary driving forces for decline of SOC under CT are the disruption of soil aggregates, and marked changes in soil environment (i.e., temperature, moisture, and oxygen) thus affecting microbial activity, and the attendant greater access of SOC to microbial processes. In addition, to accelerated soil erosion (Lal, 1976), the bare soil surface under CT is exposed to frequent wet–dry cycles enhancing the turnover rate of aggregates (Beare et al., 1994b). In contrast, adoption of no-till (NT) with no soil disturbance, and where inputs of plant residues (aboveground biomass and roots) and associated turnover of soil biological activity are enhanced, can increase the SOC pool and its stability by physical protection within stable aggregates (Beare et al., 1994a; Six et al., 2000).