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Enhancing performance of soil using lime and precluding landslide in Benin(West Africa)

Journal of Central South University 2019年第11期26卷 3066-3086页

作者： Quirin Engelbert Ayeditan ALAYE LING Xian-zhang Yvette Sèdjro KIKI TANKPINOU Marx Ferdinand AHLINHAN LUO Jun Michel Hadilou ALAYE School of Civil Engineering Harbin Institute of TechnologyHarbin 150001China National University of Sciences TechnologiesEngineering and Mathematics(UNSTIM)Abomey 133Benin(West Africa Ministry of Public Works and Transport 01 BP 351 CotonouBenin(West Africa

The past decade has been characterized by the development of infrastructure in the main cities in West *** requires more comprehensive studies of geotechnical properties of the soil in the region with an aim of creating sustainable *** paper examined the performance of the soil in Benin(West Africa).In this research,three objectives have been adopted in-depth on the performance characteristics of West Africans soil and aim to(i)accessing characteristics of soil types in the region;(ii)assessing the performance of these soils with 2%,3%and 5%of lime and(iii)characterizing landslide to evaluate the damage and potential *** methods used to examine these objectives are experimental tests according to standard French *** particle size test,Proctor test,and Atterberg limits test which are physical tests and the mechanical tests such as dynamic penetration test,direct shear test,and oedometer test,were used to assess the first *** Proctor test and California bearing ratio test were examined for the second objective and geological,environmental,social and safety study of the river bank slide were evaluated for the third *** paper firstly reveals the unstable and stable areas in southern Benin(West Africa)with the presence of clays soil and gives an equation for predicting the unstable and stable area,and secondly shows that the proportion of percentage lime leading to the best performances varying between 2%and 3%.Finally,this paper shows that the sliding of a bank could be the consequence of the sudden receding water recorded in a valley.

关键词： soil characterization soil performance clay soil lime landslide

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Indicators for the definition of land quality as a basis for the sustainable intensification of agricultural production

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International soil and Water Conservation Research 2015年第1期3卷 42-49页

作者： Jasmin Schiefer Georg J.Lair Winfried E.H.Bluma Institute of soil Research University of Natural Resources and Life SciencesPeter-Jordan-Strasse 821190 ViennaAustria Institute of Ecology University of InnsbruckSternwartestrasse 156020 InnsbruckAustria

Sustainable intensification(SI)is a concept for increasing agricultural production under sustainable conditions to meet the needs of the growing population of the *** achieve this goal,the intrinsic potential of soils for SI has to be *** report aims at identifying indicators for arable soils in Germany,which have the best natural resilience and performance and therefore can be used for *** intrinsic land and soil characteristics(organic C content,clayþsilt,pH,CEC,soil depth and slope)were selected as indictors for defining the resilience and performance of *** data from arable sites from LUCAS topsoil survey 2009 were used and attributed to arable land,applying the Arc Geographical Information System(ArcGIS).The results of this investigation reveal that 39%of the actual analyzed arable land can be recommended for SI in Germany.A comparison with the Muencheberg soil Quality Rating shows that most of this land reflects the highest potential for agricultural *** 61%of the analyzed agricultural land is not suitable for intensification,about 1.5%should be reduced in intensity with a possible conversion to avoid environmental *** most frequent limitation factor for SI is a too low cation exchange capacity in German soils.

关键词： Agriculture soil resilience soil performance soil properties Environmental protection

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