Soils As A Key Component Of The Critical Zone 6
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Soils as a Key Component of the Critical Zone 6
Author: Philippe Lemanceau
language: en
Publisher: John Wiley & Sons
Release Date: 2019-02-06
Soils are environments where a myriad of different organisms evolve, determining a series of functions which translate into ecosystem services that are essential for humanity. Improving our understanding of these organisms, their biodiversity and their interactions with each other, as well as with the environment, represents a major challenge. Soil ecology has its roots in natural history. The ecological approach focused on soils is notable for integrating, at least partially, the contributions of soil sciences (physics, chemistry, biochemistry). By renewing methods of observation and analysis (especially molecular ones) and through the development of experimental approaches and modeling, an ecology connected with other soil-based disciplines emerges and begins to influence aboveground ecology. Soils as a Key Component of the Critical Zone 6 presents an updated vision of knowledge and research in soil ecology as a complex system from the best French specialists.
Soils as a Key Component of the Critical Zone 5
Author: Christian Valentin
language: en
Publisher: John Wiley & Sons
Release Date: 2019-02-06
One third of the world's soils have already been degraded. The burden on the land continues to grow under the combined pressures of demography, urbanization, artificialization and mining, and there are increased demands on agricultural land: changing dietary preferences, land speculation, as well as new demands for agroenergy, fiber, green chemistry, and more. Resulting issues such as soil crusting, water and wind erosion, soil salinization and soil acidity therefore constitute a major threat. The authors of this book present the main processes and factors of soil degradation, different ways to prevent it and methods of rehabilitation. The book also deals with the origin and processes of metallic and organic soil pollution as well as methods of phytoremediation and restoration. It is one of the few books to explore the issue of soil artificialization and urban soil management and to highlight how agricultural and urban waste can be used to amend and fertilize cultivated soils.
Soils as a Key Component of the Critical Zone 4
This book provides the most up-to-date knowledge on water in soils and applications for the best use of our water resources. It first addresses the influence of soils on water quality, which is linked to rock weathering, soil formation, acidity and waterlogging. Here, the constituents of soils – such as clay minerals and iron oxides – play a major role. These modifications also have an impact on biogeochemical processes at the global scale, including the carbon cycle and the composition of the atmosphere. Secondly, this book discusses soil salinity, alkalinity and sodification in climates spanning from Mediterranean to arid. Here, water quality results from the concentration of solutes by evaporation and the transpiration of plants. The proper management of irrigation both protects soils against acidification and ensures sustainable agroecological development, while improper management leads to soil degradation and groundwater overexploitation. Lastly, the book describes how excess transfer of phosphorus in lakes results from a cascade of liberation and immobilization in the structure of the surrounding landscape. This leads to a general integrative method to limit eutrophication and restore the quality of water bodies.