Physical Sciences and Mathematics Commons^™

Land Evaluation For Sustainable Land Use By Remote Sensing And Gis Case Study: Assessment Of Soil Erosion In Pakistan, Y Yamamoto, S Uchida, T Suyama, A Shoji

IGC Proceedings (1993-2023)

In the northern part of Punjab in Pakistan, severe soil erosion has caused land degradation and has disturbed sustainable land use systems. Since much of this erosion has been marked near rivers, watersheds and topography are considered to be related to soil erosion. We applied the Geographic Information System (GIS) and Remote Sensing to the assessment of an erodible area. GIS is very useful for conducting spatial data analysis using map data. Remotely sensed data provides the information about land surfaces. In this study, the distance from the river, weighted by the slope estimated by GIS, and the standard deviations …

Monitoring The Stabilization Of Semi-Arid Grassland In The Bridge Creek Watershed Of Central Oregon, R Demmer, L Andrews, B Keller

IGC Proceedings (1993-2023)

Using land exchanges the Bureau of Land Management (BLM) in central Oregon consolidated its land base in the Bridge Creek Watershed between 1987 and 1992 to obtain a 64,500 acre land block. The uplands had been grazed and the valley bottoms farmed since the middle 1800s. Due to improper grazing, primitive irrigation, fire suppression and juniper invasion, the native vegetation was sparse. Weeds were ubiquitous, and soils were eroded. The results of actions taken after baseline inventories of riparian and range communities were monitored. This feedback prompted further actions. Monitoring confirms that increasing native vegetation and decreasing erosion is stabilizing …

Nutrient Leaching And Runoff In The Mediterranean Dairy Sheep Farming Systems, C Porqueddu, S Caredda, G Fara

IGC Proceedings (1993-2023)

Three years of research were carried out in Sardinia (Italy) to evaluate the environmental impact on the soil and water from intensification of the dairy sheep farming systems. An extensive rainfed system based on permanent pasture was compared with an intensive irrigated system based on a three year rotation (double cropping/lucerne). Runoff, soil erosion and nutrient losses were negligible. Nutrient losses by leaching had more important results with clear differences between forage crops. In terms of system losses, the differences were less marked.

Micro-Field Assessment Of Soil Erosion And Surface Runoff Using Mini Rainfall Simulator In Upper River Njoro Watershed In Kenya, J. O. Onyando, M. O. Okelo, C. M. Gichaba, W. A. Shivoga, S. N. Miller

IGC Proceedings (1993-2023)

Soil erosion and surface runoff are consequences of integration of several factors and processes within a catchment. The use of a rainfall simulator and run off plots provides a valuable research tool and are often used in soil erosion and surface runoff studies. Cheruiyot (1984) used this approach to study infiltration rates and sediment yield in Kiboko, Kenya. The present study used the same method but with a mini-rainfall simulator (Kamphorst, 1987) to study the effects of different land use treatments on soil loss and surface runoff.

Soil And Water Conservation: An Annotated Bibliography, Colby J. Moorberg

NPP eBooks

Soil and Water Conservation: An Annotated Bibliography highlights freely-available online resources covering various aspects of soil and water conservation, and is designed to be a resource for conservation students and practitioners. The thirteen chapters in the annotated bibliography are grouped into four sections, including History and Fundamentals, Conservation Practices, Conservation Implementation, and Careers. Types of cited resources include extension bulletins, USDA NRCS conservation practice standards, and other government reports and resources. Cited resources are generally concise, easily read, and meant for general audiences. Annotations and images are used to provide context for each resource. Many contributors made Soil and Water …

Pastoral Resources And Their Management In The Pilbara Region Of Western Australia, A M E Van Vreeswyk, Alan Payne, K A. Leighton

Agriculture reports

This report is a product of the rangeland survey of the Pilbara area of Western Australia which was conducted jointly by the Department of Agriculture and the Department of Land Administration ... in 1995-1999. This report is primarily intended to be used to assist pastoralists in station management and to assist others involved with the pastoral industry. The survey area includes all of the De Grey, East Pilbara and Roebourne/Port Hedland Land Conservation Districts, part of the Ashburton Land Conservation District.

Storm : [Wind Erosion In The Great Southern], Dan Carter

Journal of the Department of Agriculture, Western Australia, Series 4

On Thursday 11 May 1995, a low pressure system with central barometric pressure of 990 hPa formed of south-western Australia. This depression directed gale force winds over the South-West Land Division for some seven hours.

Dan Carter reports on the widespread damage to soils and property, and management practices that would have reduced the problem.

Lupin Stubbles : Getting The Best With Weaner Sheep, Keith Croker, Colin Mcdonald, Jeremy Allen

Journal of the Department of Agriculture, Western Australia, Series 4

Sweet lupins are now grown on about a million hectares in Western Australia each year. If half of the State's seven million weaners were grazed as recommended on half of the lupin stubbles, it could generate about $15 million from reduced supplementary feeding, greater wool production and other advantages. But correct management is important, particularly knowing when to take weaners out. Research by the Department over the last five years is now indicating how this should be done.

Evaluation Of Risk Factors Leading To Soil Destabilisation On The South Coastal Sandplain Of Western Australia, R V R Gwynn, P A. Findlater, J R. Edwards

Resource management technical reports

The problems of wind erosion in part of the south coast of Western Australian sandplain area were described previously (Gorddard et al, 1981) with 7.3 per cent of cleared and 18.3 per cent of the cropped area showing evidence of sand blasting. Department of Agriculture trials have shown that the loss of the top four millimetres of top soil from pastured paddocks can reduce following crop yields by up to 20 per cent (Marsh and Carter, 1983). Animal production problems associated with wind erosion of soils have not been quantified, but a number of problems such as reduced carrying capacity …

Water Erosion On Potato Land During The 1983 Growing Season Donnybrook, D J. Mcfarlane

Resource management technical reports

Soil losses over a three month period varied from 10 to 49 mm.. Soil loss was most highly correlated with length of slope of the plots. Other important factors appeared to be slope angle and soil textures. Grade furrows appear to be the best method of breaking-up long slope lengths. The low capacity of the furrows requires them to be on grades of about 4 to 4 per cent to prevent siltation and overtopping during high density storms.

A Proposed Method For Classifying And Evaluating Soils On The Basis Of Productivity And Use Suitabilities, Arthur Anderson, A. P. Nelson, F. A. Hayes, I. D. Wood

Nebraska Agricultural Experiment Station: Historical Research Bulletins

It is the object of this paper to present a method for classifying and evaluating the soils as mapped in regular soil surveys on the basis of land types, which are here defined as areas having reasonably similar productivity and use suitabilities. The standards used to differentiate land types will vary according to the desired objectives, but any material difference in yield, or in practices necessary to maintain a desirable level of productivity will justify recognition of land types. The proposed procedure involves a more detailed study of the influence which soils, slope, erosion, and drainage have on specific crops …