Integration of linear programming and a watershed-scale hydrologic model for proposing an optimized land-use plan and assessing its impact on soil conservation—A case study of the Nagwan watershed in the Hazaribagh district of Jharkhand, India

2004 ◽  
Vol 18 (1) ◽  
pp. 73-98 ◽  
Author(s):  
Ravinder Kaur ◽  
Rajesh Srivastava ◽  
Rajeev Betne ◽  
Kamal Mishra ◽  
D. Dutta
Keyword(s):  
Land Use ◽  
Linear Programming ◽  
Soil Conservation ◽  
Hydrologic Model ◽  
Watershed Scale ◽  
Land Use Plan

Considerations for targeting soil conservation investments in southern Honduras

2004 ◽  
Vol 9 (6) ◽  
pp. 781-802 ◽  
Author(s):  
AMY P. THUROW ◽  
THOMAS L. THUROW ◽  
HECTOR R. SANTOS
Keyword(s):  
Land Use ◽  
Information System ◽  
Geographic Information System ◽  
Soil Conservation ◽  
Export Earning ◽  
Conservation Priorities ◽  
Watershed Scale ◽  
Vetiver Grass ◽  
System Mapping

Honduras is vulnerable to catastrophic losses associated with landslides and flooding in the aftermath of hurricanes (Fifi in 1974 and Mitch in 1998, most recently). Taking a watershed-scale approach to targeting conservation programs to promote stability on cropped steeplands in rural southern Honduras would reduce landslide and flooding risks, thus protecting export-earning downstream industries and investments. A case study of the Land Use and Productivity Enhancement project (1990–1998) was conducted to estimate the costs of extension programming to promote three conservation technologies – mulching, vetiver grass barriers, and rock walls – and to assess their efficacy (i.e., cost per ton of soil saved). Geographic Information System mapping tools were applied to suggest conservation priorities for steepland sites that are the most prone to landslides, both to maximize the soil saved per hectare protected and to minimize downstream damages.

Distribution of heavy metals in topsoils affected by land use patterns at a small watershed scale: a case study in the Bantou Reservoir watershed in Xiamen, China

2015 ◽  
Vol 35 (16) ◽  
Author(s):  
李清良 LI Qingliang ◽  
吴倩 WU Qian ◽  
高进波 GAO Jinbo ◽  
马军 MA Jun ◽  
徐秋芳 XU Qiufang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Land Use ◽  
Watershed Scale ◽  
Small Watershed ◽  
Land Use Patterns ◽  
Use Patterns ◽  
Reservoir Watershed

scholarly journals USTED: a methodology for a quantitative analysis of land use scenarios

1995 ◽  
Vol 43 (1) ◽  
pp. 5-18 ◽  
Author(s):  
J.J. Stoorvogel ◽  
R.A. Schipper ◽  
D.M. Jansen
Keyword(s):  
Land Use ◽  
Linear Programming ◽  
Agricultural Land ◽  
Programming Model ◽  
Computer Software ◽  
Simulation Models ◽  
Linear Programming Model ◽  
Chemical Compositions ◽  
Attribute Data

Scenarios are a useful tool to study the effects of changes in the socio-economic and/or biophysical environment on agricultural land use. For the analysis of these scenarios an operational methodology, USTED, has been developed. The methodology is based on a linear programming model in combination with GIS, crop growth simulation models, and expert systems. The data requirements include quantitative descriptions of land use systems and technologies, attribute data on such features as prices and chemical compositions, and georeferenced data on farms and soils. Sustainability is incorporated in the methodology by a limited number of quantified sustainability parameters. The linear programming model analyses, on the basis of different farm types, the effect of different scenarios on land use. Customized computer software (MODUS) is used to integrate the different models. The methodology is illustrated with a case study for the Neguev settlement in the Atlantic Zone of Costa Rica.

scholarly journals Isolating the impacts of land use and climate change on streamflow

2015 ◽  
Vol 12 (2) ◽  
pp. 2201-2242 ◽  
Author(s):  
I. Chawla ◽  
P. P. Mujumdar
Keyword(s):  
Climate Change ◽  
Land Use ◽  
River Basin ◽  
General Circulation ◽  
General Circulation Models ◽  
Hydrologic Model ◽  
Combined Effect ◽  
Infiltration Capacity ◽  
Ganga Basin

Abstract. Streamflow regime is sensitive to changes in land use and climate in a river basin. Quantifying the isolated and integrated impacts of land use and climate change on streamflow is challenging as well as crucial to optimally manage water resources in the river basin. This paper presents a simple hydrologic modelling based approach to segregate the impacts of land use and climate change on streamflow of a river basin. The upper Ganga basin in India is selected as the case study to carry out the analysis. Streamflow in the river basin is modelled using a calibrated variable infiltration capacity hydrologic model. The approach involves development of three scenarios to understand the influence of land use and climate on streamflow. The first scenario assesses the sensitivity of streamflow to land use changes under invariant climate. The second scenario determines the change in streamflow due to change in climate assuming constant land use. The third scenario estimates the combined effect of changing land use and climate over streamflow of the basin. Based on the results obtained from the three scenarios, quantification of isolated impacts of land use and climate change on streamflow is addressed. Future projections of climate are obtained from dynamically downscaled simulations of six general circulation models (GCMs) available from the Coordinated Regional Downscaling Experiment (CORDEX) project. Uncertainties associated with the GCMs and emission scenarios are quantified in the analysis. Results for the case study indicate that streamflow is highly sensitive to change in urban area and moderately sensitive to change in crop land area. However, variations in streamflow generally reproduce the variations in precipitation. Combined effect of land use and climate on streamflow is observed to be more pronounced compared to their individual impacts in the basin. It is observed from the isolated effects of land use and climate change that climate has a more dominant impact on streamflow in the region. The approach proposed in this paper is applicable to any river basin to isolate the impacts of land use change and climate change on the streamflow.

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