Prediction of soil erosion in a Lake Victoria basin catchment using a GIS-based Universal Soil Loss model

Lufafa, Abel; Tenywa, Moses; Isabirye, Moses; Mwanjalolo, Majaliwa; Woomer, Paul L.

doi:10.1016/s0308-521x(02)00012-4

Cited by 270 publications

(157 citation statements)

References 5 publications

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“…where A is the average annual soil loss (t ha −1 y −1 ); A v and A o are the soil loss with and without vegetation cover separately; R is the rainfall-runoff erosivity (MJ mm ha −2 ha −1 y −1 ) based on monthly rainfall; K is the soil erodibility (t ha MJ −1 mm −1 ) derived from Soil Survey Office of Shaanxi Province; L is the slope length; S is the steepness calculated by ARCGIS 9.3; C v is the cover management practice following (Cai et al, 2000); and P v is the support practice adopting slope-based Wener's method (Lufafa et al, 2003) (both ranges between 0 and 1). The latter four parameters are all dimensionless.…”

Section: Soil Conservationmentioning

confidence: 99%

The tradeoff and synergy between ecosystem services in the Grain-for-Green areas in Northern Shaanxi, China

Jia

Feng

et al. 2014

Ecological Indicators

328

162

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a b s t r a c tAs an important part of the strategy of Western development, the Grain-for-Green Program (GFGP) was initiated to protect the environment and mitigate disasters. Ecosystem services and their dynamics are considered emerging features of ecological quality and the change in direction by many scholars and practitioners. Extending from ecosystem services (ESs) modeling, we propose a simple and feasible framework for quantitatively assessing the benefits and equilibrium of the consequences of the GFGP. Our starting evaluation shows that ESs has changed dramatically in the GFGP area. By fitting pair-wise ESs' spatial concordances at the grid-cell level, we have revealed the tradeoffs between provisioning and regulating services and the synergies between the regulating services. The analysis of the variability of the relationship between ESs on different land cover types clearly identifies the vegetation that has produced exceptionally strong ESs. Our findings suggest that quantifying the interactions between ESs may improve the ecosystem-based management practices and support policy-making to address the challenges of the sustainable use of natural resources. The framework designed for regional-scale analysis can help in clearly understanding the interrelations of ESs and make natural resources related decisions more effective and efficient, although this framework still needs to move beyond these fundamental and illustrative analyses to more fully explain the synergies and tradeoffs.

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Section: Soil Conservationmentioning

confidence: 99%

The tradeoff and synergy between ecosystem services in the Grain-for-Green areas in Northern Shaanxi, China

Jia

Feng

et al. 2014

Ecological Indicators

328

162

View full text Add to dashboard Cite

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“…The degree of soil conservation can be described as the difference between soil erosion without vegetation cover and soil erosion under the current land cover pattern and soil erosion control practice (Fu et al, 2011). The function of soil conservation based on USLE (Wischmeier and Smith, 1978;Lufafa et al, 2003) can be expressed as:…”

Section: Soil Conservationmentioning

confidence: 99%

Optimizing hotspot areas for ecological planning and management based on biodiversity and ecosystem services

Xiao

Ouyang

et al. 2016

Chin. Geogr. Sci.

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Abstract:The significance of biodiversity and ecosystem services are gradually recognized by human as an approach towards sustainability, so it is important to understand relationships and congruence between them to support conservation planning, especially in the hotspot areas with a prominent role in conservation. However, the management of most conservation hotspots mainly focused on biodiversity, and rarely concerned with ecosystem services. With the aim of proposing criteria for conservation strategies that contribute to the optimization of biodiversity and ecosystem services, in this study, a Geographic Information System (GIS)-based approach was designed to estimate and map the biodiversity and ecosystem services in Chongqing Municipality of China. Furthermore, the distributions of hotspot areas for biodiversity and ecosystem services were mapped based on the relationship between cumulative ecosystem services and areas. Finally the statistical analysis was processed focused on specific conservation objectives. The results showed that hotspot areas can conserve the most biodiversity but with the least ecosystem services under the conservation plans target to biodiversity conservation. In contrast, depending on the ecosystem services of interest, hotspot areas can conserve the largest ecosystem services but with the least biodiversity. By integrating biodiversity and ecosystem services into conservation plan, we found that the conservation and regeneration of these small areas, would contribute to a conservation of 44% of the biodiversity hotspot and 14%-42% of the ecosystem services hotspot. Moreover, the current nature reserve selection was not maximize the biodiversity and ecosystem services compared to integration strategy, indicating that hotspot areas conservation and selection is vital for optimization protection of biodiversity and ecosystem services, and has practical significance for natural resources and ecosystem management. Keywords: biodiversity; ecosystem services; hotspot; nature reserve; Chongqing Municipality, China Citation: Xiao Yang, Ouyang Zhiyun, Xu Weihua, Xiao Yi, Zheng Hua, Xian Chaofan, 2016. Optimizing hotspot areas for ecological planning and management based on biodiversity and ecosystem services.

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“…Therefore, by going through some literatures, an experimental equation ( 4) was found to calculate the P factor in such situations. This method has been named as the Wenner method (Fu et al 2005;Lufafa et al 2003) in the literature and it only requires slope layer (in percentage unit), which can be easily extracted from available DEM.…”

Section: Soil Erodibility Factor (K)mentioning

confidence: 99%

Spatio-temporal assessment of soil erosion at Kuala Lumpur metropolitan city using remote sensing data and GIS

Khosrokhani

Pradhan

2013

Geomatics, Natural Hazards and Risk

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The main purpose of this paper is to assess and predict soil erosion and its dynamism observation at Kuala Lumpur metropolitan city using universal soil loss equation (USLE). To acquire USLE factors, multi-source datasets such as rainfall data of the past 20 years, DEM map, SPOT5 image and geological map of the study area were used to calculate spatial soil erosion of Kuala Lumpur metropolitan city. Results indicated that the highest spatial coverage (61.9%) occurred in very low and the lowest spatial coverage (3.8%) in severe soil loss class. Furthermore, a landslide inventory map of the same area was overlaid on the resultant soil erosion layer to demonstrate their correlation. A frequency ratio (FR) method was applied to determine the relationship between occurred landslides and each soil erosion class. The results indicated that the highest and the lowest FR equal to 0.8 and 2.1 and observed in very low and severe soil loss classes, respectively. Temporal assessment of soil erosion indicated that there is a decrement of soil loss content in severe class from 2000 to 2010. The result of the prognosis analysis showed that the spatial coverage of the study area in severe soil loss class equals to 48%. This result proved the significance of land use/land cover to curb soil erosion. The resultant maps may help the planners and managers to take proper decision for the conservation of soil as a noteworthy natural resource.

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Prediction of soil erosion in a Lake Victoria basin catchment using a GIS-based Universal Soil Loss model

Cited by 270 publications

References 5 publications

The tradeoff and synergy between ecosystem services in the Grain-for-Green areas in Northern Shaanxi, China

The tradeoff and synergy between ecosystem services in the Grain-for-Green areas in Northern Shaanxi, China

Optimizing hotspot areas for ecological planning and management based on biodiversity and ecosystem services

Spatio-temporal assessment of soil erosion at Kuala Lumpur metropolitan city using remote sensing data and GIS

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