Variation in soil properties under different land use types managed by smallholder farmers along the toposequence in southern Ethiopia

Negasa, Tariku; Ketema, Haile; Legesse, Abiyot; Sisay, Mulugeta; Temesgen, Habtamu

doi:10.1016/j.geoderma.2016.11.021

Cited by 92 publications

(62 citation statements)

References 24 publications

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“…This was probably due to lateral movement of soil particles as affected by runoff since the area receives high rainfall intensity (annual rainfall > 3000 mm) and steep slope (39 %), especially at the beginning of crop planting or after forest clearance. Negasa, Ketema, Legesse, Sisay, & Temesgen (2017) found that slope affected the distribution of sand, silt, and clay of soil particles under different types of land management. Furthermore, they stated that clay particles showed an increasing tendency in the sequential topography.…”

Section: Particle Size Distributionmentioning

confidence: 99%

“…Total organic carbon was found to be the best key determinant for soil conditions besides mineralizable N and basal respiration, while C derived from biomass of microorganisms as well as labile N was important to differentiate the types of land use (Liu et al, 2018). Then, at sloping farming area, soil physicochemical properties were found to be variated under different types of land management (Negasa, Ketema, Legesse, Sisay, & Temesgen, 2017).…”

Section: Introductionmentioning

confidence: 98%

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Effects of Slope Position on Soil Physico-chemical Characteristics Under Oil Palm Plantation in Wet Tropical Area, West Sumatra Indonesia

Yasin

Yulnafatmawita

2018

Agrivita.J.Agr.Sci

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This research was aimed to study soil physico-chemical properties at four slope positions under oil palm plantation in Dharmasraya, West Sumatra, Indonesia. Soils were sampled at 0-20 cm soil depth from 4 different slope positions (upper, middle, lower slope, and the bottom or flat area). The parameters analyzed were soil texture, SOM, bulk density, total pore, hydraulic conductivity, soil water potential (physical characteristics) as well as soil pH, CEC, Al-exchangeable, basic cations (Ca, Mg, K), N, and P (chemical characteristics). The results showed that the bottom area had better soil physicochemical properties than the others. SOM increased by 33%, total pore by 19%, void ratio by 47%, plant available water (PAW) by 28%, soil pH-H 2 O by 41%, CEC by 171 %, total-N by 170 %, and P-potential by 114 %, in contrast, soil BD and exchangeable-Al were lower (20 % and 96 %, respectively) in the bottom than in the sloping land. The middle slope had the poorest soil physico-chemical properties after 26 years of forest conversion into oil palm plantation. All sites had clay texture, the clay content increased (R 2 =0.93) by lowering slope position, and so did SOM content (R 2 =0.86), soil CEC (R 2 =0.93), and soil total-N values (R 2 =0.76).

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Section: Particle Size Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Effects of Slope Position on Soil Physico-chemical Characteristics Under Oil Palm Plantation in Wet Tropical Area, West Sumatra Indonesia

Yasin

Yulnafatmawita

2018

Agrivita.J.Agr.Sci

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“…Generally, previous studies have focused on the effects of land use on the quantity of OC in soil (Celik, ; Fiener, Gottfried, Sommer, & Steger, ; Li et al., ; Negasa, Ketema, Legesse, Sisay, & Temesgen, ; Wang et al., ). However, the quality of SOC is also important for proper soil functioning.…”

Section: Introductionmentioning

confidence: 99%

Characterization of organic matter fractions in the top layer of soils under different land uses in Central‐Eastern Europe

Ukalska‐Jaruga

Klimkowicz‐Pawlas

Smreczak

2019

Soil Use and Management

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The objective of this study was to investigate differences in organic matter fractions, such as dissolved organic carbon and humic substances, in soils under different land uses. Soil samples were collected from the upper layer of arable lands and grasslands. Humic substances (HS) were chemically fractionated into fulvic acids (FA), humic acids (HA) and humins (HUM), and based on the separated fractions, the humification index (HI) and the degree of HS transformation (DT) were calculated. Dissolved organic carbon (DOC) was determined by cold (CWE) and hot water (HWE) extractions. Regardless of land use, the results indicated significant differences in soil organic carbon (SOC) and HS composition, with HA and HUM as the dominant fractions. Total SOC was higher in grassland (median = 17.51 g kg−1) than arable soils (median = 9.98 g kg−1); the HI and DT indices did not differ significantly between land uses (HI = 0.3–10.3 and DT = 0.2–6.2 for grasslands, p > 0.05; HI = 0.3–3.9 and DT = 0.2–20.1 for arable lands, p > 0.05). This indicates the relatively high stability of organic carbon and efficient humification processes in both land uses. Additionally, in arable soils lower CWE‐C (0.75 g kg−1) and higher HWE‐C (2.59 g kg−1) than in grasslands (CWE‐C = 1.13 g kg−1, HWE‐C = 1.60 g kg−1) can be related to farming practice and application of soil amendments. The results showed that both labile and humified organic matter are better protected in grassland soils and are consequently less vulnerable to mineralization.

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“…Increasing the content of soil organic carbon and soil available nutrients is the common approach to improve soil productivity and agricultural sustainability. Land use changes could significantly alter the inputs and outputs of soil organic matter, thus resulting in the variations in the content and circulation of soil labile carbon and soil nutrients [32,33]. The present study showed that conversion of cropland to revegetation land increased the LOC content in the 0-50 cm depth ( Figure 4A).…”

Section: Discussionmentioning

confidence: 51%

Short Term Effects of Revegetation on Labile Carbon and Available Nutrients of Sodic Soils in Northeast China

Tang

Liu

et al. 2020

Land

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In response to land degradation and the decline of farmers’ income, some low quality croplands were converted to forage or grassland in Northeast China. However, it is unclear how such land use conversions influence soil nutrients. The primary objective of this study was to investigate the influences of short term conversion of cropland to alfalfa forage, monoculture Leymus chinensis grassland, monoculture Leymus chinensis grassland for hay, and successional regrowth grassland on the labile carbon and available nutrients of saline sodic soils in northeastern China. Soil labile oxidizable carbon and three soil available nutrients (available nitrogen, available phosphorus, and available potassium) were determined at the 0–50 cm depth in the five land uses. Results showed that the treatments of alfalfa forage, monoculture grassland, monoculture grassland for hay, and successional regrowth grassland increased the soil labile oxidizable carbon contents (by 32%, 28%, 15%, and 32%, respectively) and decreased the available nitrogen contents (by 15%, 19%, 34%, and 27%, respectively) in the 0–50 cm depth compared with cropland, while the differences in the contents of available phosphorus and available potassium were less pronounced. No significant differences in stratification ratios of soil labile carbon and available nutrients, the geometric means of soil labile carbon and available nutrients, and the sum scores of soil labile carbon and available nutrients were observed among the five land use treatments except the stratification ratio of 0–10/20–30 cm for available phosphorus and the values of the sum scores of soil labile carbon and available nutrients in the 0–10 cm depth. These findings suggest that short term conversions of cropland to revegetation have limited influences on the soil labile carbon and available nutrients of sodic soils in northeastern China.

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Variation in soil properties under different land use types managed by smallholder farmers along the toposequence in southern Ethiopia

Cited by 92 publications

References 24 publications

Effects of Slope Position on Soil Physico-chemical Characteristics Under Oil Palm Plantation in Wet Tropical Area, West Sumatra Indonesia

Effects of Slope Position on Soil Physico-chemical Characteristics Under Oil Palm Plantation in Wet Tropical Area, West Sumatra Indonesia

Characterization of organic matter fractions in the top layer of soils under different land uses in Central‐Eastern Europe

Short Term Effects of Revegetation on Labile Carbon and Available Nutrients of Sodic Soils in Northeast China

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