Identification and classification of expansive soils in arid and semi-arid regions

1989 ◽  
Vol 26 (3-4) ◽  
pp. A130
Keyword(s):  
Arid Regions ◽  
Expansive Soils ◽  
Semi Arid

The Australian Approach to Residential Footing Design on Expansive Soils

2013 ◽  
Vol 438-439 ◽  
pp. 593-598
Author(s):  
Jie Li ◽  
An Nan Zhou
Keyword(s):  
Arid Regions ◽  
Current Practice ◽  
Expansive Soils ◽  
Residential Buildings ◽  
Expansive Soil ◽  
Site Classification ◽  
Residential House ◽  
Semi Arid ◽  
Soil Movements

Expansive soils in semi-arid regions are of great concern to design and geotechnical engineers. Damage to residential buildings resulting from expansive soil movements has been widely reported in Australia. This paper describes the current practice in Australia, which includes the site classification, laboratory tests and residential footing design. A case study of a residential house damaged by expansive soils is also presented.

scholarly journals Compatibilidade geomórfica e identificação dos padrões de uso e cobertura da terra da Bacia do riacho do Tigre

GeoTextos ◽  
2018 ◽  
Vol 14 (2) ◽  
Author(s):  
Fábio Vitorino Gomes ◽  
Jonas Otaviano Praça de Souza
Keyword(s):  
Land Use ◽  
Arid Regions ◽  
Northeastern Brazil ◽  
Use Patterns ◽  
Production Activity ◽  
Agricultural Potential ◽  
Agricultural Use ◽  
Semi Arid

Atualmente muitas pesquisas são desenvolvidas na busca de um acompanhamento mais próximo dos problemas detectados nas regiões semiáridas do nordeste brasileiro. O acompanhamento de áreas com potencial agrícola, ou qualquer outro tipo de atividade produtiva nessas regiões vem se tornando mais frequente uma vez que essas regiões necessitam de um monitoramento mais presente deste tipo de atividade e também um melhor planejamento do manejo adequado da terra. Baseado nisto, o zoneamento ambiental torna-se um instrumento importante para classificação de áreas, com procedimentos diversos quanto à análise do uso e da cobertura da terra e dos comportamentos geomórficos. No geral o que se objetiva nesse artigo é destacar a relação entre o uso e o relevo da Bacia do riacho do Tigre - PB, dando ênfase em como os compartimentos do relevo interagem com os tipos de uso do solo e identificar os níveis de compatibilidade geomórfica através da predisposição litológica interpolada com os elementos topográficos. Os resultados mostraram uma área de uso agrícola 80% compatível, 18% moderadamente compatível e 2% incompatível de acordo com o gradiente do terreno encontrado na região. Abstract GEOMORPHIC COMPATIBILITY AND IDENTIFICATION OF USE PATTERNS OF THE BASIN LAND COVER TIGER RILL Many researches are developed in search of a closer follow-up of the problems detected in the semi-arid regions of northeastern Brazil. The monitoring of areas with agricultural potential, or any other type of production activity in these regions where they become more frequent since the regions need a monitoring and present this type of activity and also a better planning of the land management. Based on this, the environmental zoning becomes an important instrument for the classification of areas, where there are different procedures regarding the analysis of land use and coverage and geomorphic behaviors. In general, what refers to this aspect is a relationship between the use and relief of the tiger creek basin - PB, given as the relief comparisons that interact with the types of soil use and identify the levels of compatibility Geomorphic by means of the lithological predisposition interpolated with the topographic elements. The results showed an agricultural use area 80% compatible 18% moderately compatible and 2% incompatible according to the terrain found in the region.

THE CLASSIFICATION OF LAND ACCORDING TO THE DEGREE OF RABBIT INFESTATION IN CENTRAL OTAGO

1987 ◽  
pp. 65-70
Author(s):  
I.G.C. Kerr ◽  
J.M. Williams ◽  
W.D. Ross ◽  
J.M. Pollard
Keyword(s):  
Carrying Capacity ◽  
Mediterranean Climate ◽  
Natural Habitat ◽  
Public Funding ◽  
Soil Survey ◽  
European Rabbit ◽  
Cultural Modification ◽  
Classification Information ◽  
Semi Arid

The European rabbit (Oryctolagus cuniculus) introduced into New Zealand in the 183Os, has consistently flourished in Central Otago, the upper Waitaki, and inland Marlborough, all areas of mediterranean climate. It has proved difficult to manage in these habitats. The 'rabbit problem' is largely confined to 105,000 ha of low producing land mostly in semi arid areas of Central Otago. No field scale modifications of the natural habitat have been successful in limiting rabbit numbers. The costs of control exceed the revenue from the land and continued public funding for control operations appears necessary. A system for classifying land according to the degree of rabbit proneness is described. Soil survey and land classification information for Central Otago is related to the distribution and density of rabbits. This intormation can be used as a basis for defining rabbit carrying capacity and consequent land use constraints and management needs. It is concluded that the natural rabbit carrying capacity of land can be defined by reference to soil survey information and cultural modification to the natural vegetation. Classification of land according to rabbit proneness is proposed as a means of identifying the need for, and allocation of, public funding tor rabbit management. Keywords: Rabbit habitat, rabbit proneness, use of rabbit prone land.

BIODIVERSITY OF HALOPHYTES IN SEMI-ARID REGIONS CASE OF ZAHREZ GHARBI AND ZAHREZ CHERGUI (ZAAFRANE-DJELFA) IN ALGERIA

2020 ◽  
Vol 76 (11) ◽  
Author(s):  
Senni Rachida ◽  
De Belair Gerard ◽  
Abdelkrim Hacene
Keyword(s):  
Arid Regions ◽  
Semi Arid

Water Resources Management in the Semi-Arid Central Valley of California

1987 ◽  
Vol 19 (9) ◽  
pp. 97-106
Author(s):  
J. J. Vasconcelos
Keyword(s):  
Resource Management ◽  
Ground Water ◽  
Water Resource ◽  
Water Resource Management ◽  
Arid Regions ◽  
Central Valley ◽  
The United States ◽  
Policy Makers ◽  
Ground Water Resource ◽  
Semi Arid

Hater resource managers in semi-arid regions are faced with some unique problems. The wide variations in precipitation and stream flows in semi-arid regions increase man's dependence on the ground water resource for an ample and reliable supply of water. Proper management of the ground water resource is absolutely essential to the economic well being of semi-arid regions. Historians have discovered the remains of vanished advanced civilizations based on irrigated agriculture which were ignorant of the importance of proper ground water resource management. In the United States a great deal of effort is presently being expended in the study and control of toxic discharges to the ground water resource. What many public policy makers fail to understand is that the potential loss to society resulting from the mineralization of the ground water resource is potentially much greater than the loss caused by toxic wastes discharges, particularly in developing countries. Appropriations for ground water resource management studies in developed countries such as the United States are presently much less than those for toxic wastes management and should be increased. It is the reponsibility of the water resource professional to emphasize to public policy makers the importance of ground water resource management. Applications of ground water resource management models in the semi-arid Central Valley of California are presented. The results demonstrate the need for proper ground water resource management practices in semi-arid regions and the use of ground water management models as a valuable tool for the water resource manager.

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