scholarly journals Soil type and land use effects on tensorial properties of saturated hydraulic conductivity in northern Germany

2019 ◽  
Vol 71 (2) ◽  
pp. 179-189 ◽  
Author(s):  
Rainer Horn ◽  
Anneka Mordhorst ◽  
Heiner Fleige ◽  
Iris Zimmermann ◽  
Bernd Burbaum ◽  
...  
Keyword(s):  
Land Use ◽  
Hydraulic Conductivity ◽  
Soil Type ◽  
Saturated Hydraulic Conductivity ◽  
Northern Germany ◽  
Land Use Effects

Vegetation, soil hydrophysical properties, and grazing relationships in saline-sodic soils of Central Argentina

1999 ◽  
Vol 79 (3) ◽  
pp. 399-409 ◽  
Author(s):  
J. M. Cisneros ◽  
J. J. Cantero ◽  
A. Cantero
Keyword(s):  
Land Use ◽  
Hydraulic Conductivity ◽  
Bulk Density ◽  
Soil Profile ◽  
Saturated Hydraulic Conductivity ◽  
Water Dynamics ◽  
Soil Conditions ◽  
Salt Accumulation ◽  
Sodic Soils ◽  
Central Argentina

Land use and grazing regime can influence the dynamic of soil water and salt in humid areas. In Central Argentina, more than 2 ×106 ha are subjected to either permanent or cyclical processes of land salinization, alkalinization, flooding and sedimentation. In this region, the natural vegetation is the principal resource on which most systems of animal production are based. The objective of this study was to evaluate the effects of plant cover and grazing over some hydrophysical properties of three saline-sodic soils (two Gleic Solonetz in duripan phase and one Mollic Solonetz in fragipan phase), within a catena sequence. The effects on bulk density, saturated hydraulic conductivity, infiltration runoff, superficial salt accumulation and soil salinity distribution were determined in both bare and covered soil conditions, inside and outside of grazing exclosures. The results showed increased bulk density of topsoil for bare conditions, while saturated hydraulic conductivity did not show significant differences. In soils without any cover, the infiltration decreased significantly. Consequently, the runoff coefficient and salinity were greater, as indicated by significant salt accumulation in the topsoil. The soil profile salinity was reduced as a function of exclosure time, showing a trend toward desalinization resulting from a combined effect of soil cover and changes in intensity of land use. A conceptual model of salt and water dynamics in the soil profile for the landscape scale is postulated. The role of vegetation in regulating water and salt movement in poorly drained areas is emphasised as a basis for the development of management strategies. Key words: Saline and sodic soils, infiltration, runoff, grazing, exclosure, model

scholarly journals Land use effects on soil erodibility and hydraulic conductivity in Akure, Nigeria

2018 ◽  
Vol 13 (7) ◽  
pp. 329-337
Author(s):  
Habeeb Ajibola Yusuf ◽  
Philip Gbenro Oguntunde ◽  
Abosede Khadijah Lawal
Keyword(s):  
Land Use ◽  
Hydraulic Conductivity ◽  
Soil Erodibility ◽  
Land Use Effects

scholarly journals Understanding saturated hydraulic conductivity under seasonal changes in climate and land use

Geoderma ◽  
2018 ◽  
Vol 315 ◽  
pp. 75-87 ◽  
Author(s):  
Mohamed Elhakeem ◽  
A.N. Thanos Papanicolaou ◽  
Christopher G. Wilson ◽  
Yi-Jia Chang ◽  
Lee Burras ◽  
...  
Keyword(s):  
Land Use ◽  
Hydraulic Conductivity ◽  
Seasonal Changes ◽  
Saturated Hydraulic Conductivity

Effects of soil structural properties on saturated hydraulic conductivity under different land-use types

Soil Research ◽  
2014 ◽  
Vol 52 (4) ◽  
pp. 340 ◽  
Author(s):  
Yanli Jiang ◽  
Ming'an Shao
Keyword(s):  
Land Use ◽  
Hydraulic Conductivity ◽  
Water Supply ◽  
Organic Matter Content ◽  
Aggregate Stability ◽  
Saturated Hydraulic Conductivity ◽  
Soil Columns ◽  
Undisturbed Soil ◽  
Land Use Types ◽  
The Impact

Soil structure has important influences on edaphic conditions and environment, is often related to aggregate stability. The saturated hydraulic conductivity (Ks) is an important soil hydraulic property that affects water flow and transport of dissolved solutes. The objective of this study was to analyse the impact of water-stable aggregate stability on Ks under different land-use types. Using a range of aggregate stabilities in disturbed soil columns, Ks was measured and relationships between the mean weight diameter (MWD) of aggregates and Ks for three different conditions (three soil layers, four land use types, two water supply methods) were determined. Differences between soil aggregate characteristics and organic matter content among the land use types were significant. Using both both top and bottom water supply methods, MWD was related to Ks by a non-linear function (coefficient of determination >0.95), and land-use type and water supply method were significant factors. When undisturbed soil columns were investigated, the relationship between MWD and Ks was obscured by other soil environmental factors.

Transportation Economic and Land Use System

1998 ◽  
Vol 1617 (1) ◽  
pp. 84-89 ◽  
Author(s):  
Louis J. Pignataro ◽  
Joseph Wen ◽  
Robert Burchell ◽  
Michael L. Lahr ◽  
Ann Strauss-Wieder
Keyword(s):  
Land Use ◽  
Information System ◽  
Management Tool ◽  
Improvement Program ◽  
Transportation Projects ◽  
Accessible Information ◽  
Surface Transportation ◽  
Land Use System ◽  
Land Use Effects ◽  
Computer Based

The purpose of the Transportation Economic and Land Use System (TELUS) is to convert the transportation improvement program (TIP) into a management tool. Accordingly, the system provides detailed and easily accessible information on transportation projects in the region, as well as their interrelationships and impacts. By doing so, TELUS enables public-sector agencies to meet organizational, Intermodal Surface Transportation Efficiency Act, state, and other mandates more effectively. The objectives are accomplished by providing the computer-based capability to analyze, sort, combine, and track transportation projects in or under consideration for a TIP; assessing the interrelationships among significant transportation projects; estimating the regional economic and land use effects of transportation projects; and presenting project information in an easily understood format, including geographic information system formats.

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