Effects of land use types on soil quality dynamics in a tropical sub-humid ecosystem, western Ethiopia

Leul, Yitayh; Assen, Mohammed; Damene, Shimeles; Legass, Asmamaw

doi:10.1016/j.ecolind.2023.110024

Cited by 37 publications

(21 citation statements)

References 43 publications

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“…Both intensive grazing and cultivation can reduce grass cover (Porensky et al, 2020), and promote highly competitive plant species, such as encroaching shrubs, which are the first to establish in disturbed areas (Bond, 2008). Alternatively, previous grazing activities may , 1999;Filipovi et al, 2023;Leul et al, 2023). Soil Mg is easily washed out of the soil by infiltrating water (Mengel & Appel, 2001), and soil P can strongly adsorb onto soil particles, resulting in depletion from the soil due to soil erosion and crop removal (Nortjé & Laker, 2021;Reijnders, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Against our hypothesis, most soil nutrients in KNP did not differ significantly among the zones of historical land use, except for Mg, P and Ca, which were lower in the grazed and cultivated zones compared to historically less disturbed ‘wild’ land‐use zones. Soil disturbance and crop harvesting may have contributed to the loss of soil Mg, P and Ca, which are susceptible to depletion through leaching and crop removal (Allsopp, 1999; Filipovi et al., 2023; Leul et al., 2023). Soil Mg is easily washed out of the soil by infiltrating water (Mengel & Appel, 2001), and soil P can strongly adsorb onto soil particles, resulting in depletion from the soil due to soil erosion and crop removal (Nortjé & Laker, 2021; Reijnders, 2014).…”

Section: Discussionmentioning

confidence: 99%

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The interplay between historical land‐use and the distribution of Helichrysum shrubs in an African‐protected grassland

Mgimba,

Smith,

Ngondya

et al. 2024

Afr J Ecol

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Human land use can have lasting impacts on landscape characteristic, yet there remains a lack of information on how former land use affects plant communities in protected African grasslands. In this study, we investigated how land uses prior to the creation of Kitulo National Park, Tanzania, shaped the presence and abundance of the native shrub, Helichrysum species. We evaluated both plant species composition and soil properties across the park by dividing our sample into three different zones of historical land use based on participatory mapping. We divided the park into three former land uses: (1) livestock grazed and cultivated; (2) grazed only and (3) wild grazing with limited human impact. We observed that former grazed cultivated land use had five times higher Helichrysum abundance than former ‘wild’ land use. Soil pH, magnesium and phosphorus levels varied significantly across zones of historical land use but not between sites with and without Helichrysum species. Helichrysum splendidum was more abundant in soils with low soil phosphorus and magnesium concentrations. Our study demonstrates that historic grazing and cropping land uses through changes in soil nutrient properties can explain current Helichrysum species spread in protected areas. As such, conservation management plans would benefit from integrating mapping of former land uses to target interventions for problematic encroaching shrubs.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The interplay between historical land‐use and the distribution of Helichrysum shrubs in an African‐protected grassland

Mgimba,

Smith,

Ngondya

et al. 2024

Afr J Ecol

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“…We used one-way ANOVA to check if there was a significant difference in geographical features among various farmlands and converted lands. One-way ANOVA is a filter to select the relevant factor and is used in most landscape studies [45][46][47][48]. One-way ANOVA has proven its effectiveness in solving the problem of high dimensionality in the feature space [49,50].…”

Section: Analysis Of Motives For Farmland Diversionmentioning

confidence: 99%

From Crops to Kilowatts: An Empirical Study on Farmland Conversion to Solar Photovoltaic Systems in Kushida River Basin, Japan

Xie,

Ullah,

Takatori

2024

Geographies

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In Japan, rural areas are grappling with population decline and aging, leading to a shortage of labor for farmland maintenance. This has resulted in the abandonment of farmland or its conversion for solar photovoltaic (PV) use. However, this unplanned conversion raises concerns about agricultural productivity decline, landscape degradation, biodiversity loss, water resource maintenance, and disaster prevention. This study focuses on the Kushida watershed, examining (1) accurate farmland classification using remote sensing data, (2) the geographical distribution of farmland converted to PV systems from 2016 to 2021 and concentrated along the river, especially on north-facing slopes, (3) the highest conversion rates in wheat fields, followed by legume fields, tea fields, and paddy fields, and (4) no clear correlation between farmland conversions and changes in the number of farmers, but associations with farmland geography and solar radiation levels. These findings contribute to a nuanced understanding of sustainable rural development in Japan, emphasizing the importance of considering geographical factors in the conversion of farmland to PV.

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“…The surge in demand for urban space has fragmented vast areas of forest and transformed vegetated landscapes into a heterogeneous continuum of native (plantations and grasslands), slightly modified (agriculture), and artificial (roads and bare sites) land uses [ 4 ]. As of 2019, 60–85% of the world’s forests had been exposed to destructive anthropogenic activities, bringing adverse effects to soil quality, mineral nutrient storage, and ecosystem functions [ 5 , 6 , 7 ]. Soil physicochemical traits, such as moisture, pH, organic matter content, and nutrient concentration, are likely affected by land-use intensification due to surface soil depletion and deep soil layer exposure [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Fine-Root Distribution and Soil Physicochemical Property Variations in Four Contrasting Urban Land-Use Types in South Korea

Tran,

An,

Carayugan

et al. 2024

Plants

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Urbanization and associated forest conversions have given rise to a continuum of native (forest fragments) and modified (artificial grasslands and perennial ecosystems) land-use types. However, little is known about how these shifts affect soil and fine-root compartments that are critical to a functioning carbon and nutrient circulation system. In this study, soil physicochemical properties, fine-root mass, and vertical distribution patterns were investigated in four representative urban land-use types: grassland (ZJ), perennial agroecosystem (MP), broadleaf deciduous forest patch (QA), and coniferous evergreen forest patch (PD). We quantified the fine-root mass in the upper 30 cm vertical profile (0–30 cm) and at every 5 cm depth across three diameter classes (<2 mm, 2–5 mm, and <5 mm). Soil physicochemical properties, except for phosphorus, nitrogen, ammonium nitrogen, and sodium cations, varied significantly across land-use types. The total root biomass (<5 mm) decreased in the order of QA (700.3 g m−2) > PD (487.2 g m−2) > ZJ (440.1 g m−2) > MP (98.3 g m−2). The fine-root mass of ZJ and MP was correlated with soil nutrients, which was attributed to intensive management operations, while the fine-root mass of QA and PD had a significant relationship with soil organic matter due to the high inputs from forest litter. Very fine roots (<2 mm) presented a distinct decremental pattern with depth for all land-use types, except for MP. Very fine roots populated the topmost 5 cm layer in ZJ, QA, and PD at 52.1%, 49.4%, and 39.4%, respectively. Maintaining a woody fine-root system benefits urban landscapes by promoting soil stabilization, improving ground infiltration rates, and increasing carbon sequestration capacity. Our findings underscore the importance of profiling fine-root mass when assessing urban expansion effects on terrestrial ecosystems.

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Effects of land use types on soil quality dynamics in a tropical sub-humid ecosystem, western Ethiopia

Cited by 37 publications

References 43 publications

The interplay between historical land‐use and the distribution of Helichrysum shrubs in an African‐protected grassland

The interplay between historical land‐use and the distribution of Helichrysum shrubs in an African‐protected grassland

From Crops to Kilowatts: An Empirical Study on Farmland Conversion to Solar Photovoltaic Systems in Kushida River Basin, Japan

Fine-Root Distribution and Soil Physicochemical Property Variations in Four Contrasting Urban Land-Use Types in South Korea

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