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Soil Health and Intensification of Agroecosystems examines the climate, environmental, and human effects on agroecosystems and how the existing paradigms must be revised in order to establish sustainable production. The increased demand for food and fuel exerts tremendous stress on all aspects of natural resources and the environment to satisfy an ever increasing world population, which includes the use of agriculture products for energy and other uses in addition to human and animal food. The book presents options for ecological systems that mimic the natural diversity of the ecosystem and can have significant effect as the world faces a rapidly changing and volatile climate. The book explores the introduction of sustainable agroecosystems that promote biodiversity, sustain soil health, and enhance food production as ways to help mitigate some of these adverse effects. New agroecosystems will help define a resilient system that can potentially absorb some of the extreme shifts in climate. Changing the existing cropping system paradigm to utilize natural system attributes by promoting biodiversity within production agricultural systems, such as the integration of polycultures, will also enhance ecological resiliency and will likely increase carbon sequestration.

Soil biology. --- Soil management. --- Soils and nutrition.

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Soil management --- Soil microbiology --- Soil conservation

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Soil Health and Intensification of Agroecosystems examines the climate, environmental, and human effects on agroecosystems and how the existing paradigms must be revised in order to establish sustainable production. The increased demand for food and fuel exerts tremendous stress on all aspects of natural resources and the environment to satisfy an ever increasing world population, which includes the use of agriculture products for energy and other uses in addition to human and animal food. The book presents options for ecological systems that mimic the natural diversity of the ecosystem and can have significant effect as the world faces a rapidly changing and volatile climate. The book explores the introduction of sustainable agroecosystems that promote biodiversity, sustain soil health, and enhance food production as ways to help mitigate some of these adverse effects. New agroecosystems will help define a resilient system that can potentially absorb some of the extreme shifts in climate. Changing the existing cropping system paradigm to utilize natural system attributes by promoting biodiversity within production agricultural systems, such as the integration of polycultures, will also enhance ecological resiliency and will likely increase carbon sequestration.

Soil biology. --- Soil management. --- Soils and nutrition.

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The soils of different agrosystems are studied simultaneously with termite activity in the context of long-term restoration project. The aim is to highlight the positive impact of termites on soil physicochemical properties. Previous studies have mainly focused on permanent structures built by those insects such as mounds, punctually impacting the landscape. In order to study a more widespread impact of termites, the temporary structures built for food foraging are compared to the underlying soil. It is assumed that, after rainfall or watering, these structures will return to the soil surface. The three sites are a fallow land (permanent pasture), a tilled field and agroecological raised beds. Termites only show up where there is organic matter, irrespective of its type. In the three sites, clay content, available K, Mg and P, organic carbon, pH, cation exchange capacity (except in the fallow) and exchangeable bases are increased in the biogenic constructions. The increase is generally lower in the beds because the reference soil already has higher values. In the field and the fallow, the aggregation is improved in termite sheetings, as the macroaggregates in both sites and the protected microaggregates in the field increase whereas the free microaggregates decrease. In the beds, the reference soil already has a better physical stability, with more macroaggregates and protected microaggregates. Our results demonstrate that agricultural conservation practices are able to improve most of the soil properties in the same way that for ecosystem engineers such as termites.

Termitidae --- SOM --- Soil management --- Soil chemicophysical properties --- Sciences du vivant > Sciences de l'environnement & écologie

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Soil Reinforcement for Anchor Plates and Uplift Response presents a comprehensive and rigorous review of the current knowledge in soil improvement for anchor plates, and is based on original research that includes experimental data on how to enhance uplift response of soil anchor plates by using several soil reinforcement methods. Divided into 6 chapters, the author makes an introduction to both Ancho Plates and Soil Reinforcement in chapter one, then providing a comprehensive literature review on the topic in chapter 2. Chapter 3 presents how the experiment was set up, the different types of geotextiles used, and the types of soil tested. Chapter 4 presents experimental data, along with data provided by simulation softwares, including Plaxis. Chapter 5 compares the experimental results to the numerical simulation data, providing researchers and geotechnical engineers with tools they can apply to their own projects. In chapter 6, the author presents his conclusions and recommendations on the usage of soil reinforcement to maximize uplift response to anchor plates. Researchers in geotechnical engineering can use the methods and experimental data presented in the book on their own projects, and practicing engineers will benefit from the comparisons between experimental and simulation data provided to make appropriate selection of soil reinforcement techniques that can be applied to their projects. Presents techniques for improving uplift response by 40% or more Discusses the uplift capacity of symmetrical anchor plates in several scenarios Provides a complete review of soil reinforcement for anchor plates Includes numerical analyses methods for validating experimental test results

Soil conservation. --- Conservation of soil --- Erosion control, Soil --- Soil erosion --- Soil erosion control --- Soils --- Agricultural conservation --- Soil management --- Control --- Prevention --- Conservation