Soil health: conceptual and methodological approaches
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JIGĂU, Gheorghe, FRUNZE, Nina, CIOLACU, Tatiana, TURCHIN, Boris, DOBROJAN, Sergiu. Soil health: conceptual and methodological approaches. In: Present Environment and Sustainable Development, Ed. 17, 3 iunie 2022, Iași. Iași: 2022, Ediția 17, pp. 63-64.
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Present Environment and Sustainable Development
Ediția 17, 2022
Simpozionul "Present Environment and Sustainable Development"
17, Iași, Romania, 3 iunie 2022

Soil health: conceptual and methodological approaches


Pag. 63-64

Jigău Gheorghe, Frunze Nina, Ciolacu Tatiana, Turchin Boris, Dobrojan Sergiu
 
Moldova State University
 
Proiecte:
 
Disponibil în IBN: 9 iunie 2022


Rezumat

The end of the 20th century the beginning of the 21st century was marked by the formulation of the basic principles and categories of the concept of “soil health” in many publications of a series of pedologists-ecologists in which soil is examined in the context of: a) supporting plant and animal productivity agronomy); b) supporting and promoting soil biodiversity, water and air quality, sequestration and stabilization of organic carbon (environmental approach); c) ensuring human health (socio-economic approach) (Doran et al., 1996; Doran Zeiss, 2000; Van Bruggen, Semenov, 2000; Kinyangi, 2007). Among the priorities of this concept we mention a turning point in the examination of soils from utilitarian positions to the biospheric examination as a central link of both natural and anthropogenic terrestrial ecosystems. In this context, the concept of “soil health” implies the systemic, real objective evaluation of both bioproductive capacity of soils and their unidirectional functioning capacity in relation to the other components of ecosystems, but also to the related geosystems (hydrosphere, atmosphere, lithosphere). In this sense, within the concept of “soil health” the latter is no longer considered only an inert environment of providing the plants with the necessary ones (water, air, heat, nutrition, etc.), lifeless, which modern intensive agriculture (including so-called conservative, which is based on the same intensive elements, except tillage) tends to represent it, but a living, dynamic environment in constant change, reproduction and evolution. In the context of the above, we consider that "soil health" is a biospheric category, which examines the soil as a bioroutine / parabiotic system quantitative expression of the state and dynamics of biotic component activity within the soil bioorganomineral complex. In this sense, “soil health” implies examination of soil as: a) a stable-functional factor to ensure the bioproductivity of natural and anthropogenic biogeocenoses, as well as the diversity and evolution of soil biota; b) energy storage and biophilic elements, which ensure the stability of the potential bioproductivity of terrestrial ecosystems, their continuous operation; c) the link between the large geological circuit and the small biological circuit of substances; d) unique biosystem that modelate, protect and reproduce the quality of the environment. Quantitatively, this category is characterized by biopedofunctional parameters appropriate to concrete land conditions, biological, biochemical, biophysical processes materialized in the degree of closure of carbon circuits and biophilic elements and their stability to the pedoturbation impact of biotic and abiotic stressors. In terms of the concept of “soil health”, its functions in terrestrial ecosystems are to be divided into three categories responsible for: 1. Environmental safety - extended reproduction of the functions responsible for the health of environmental components and extended self-reproduction of the pedogenetic process; 2. Food security - extended reproduction of the functions responsible for the quantity and health of plant and animal production; 3. Human health - extended reproduction of the functions responsible for the health of people's living environment. At hierarchically lower levels, soil functions are divided according to biopedofunctional mechanisms and effects. Based on the above, a first variant of the soil health management model was elaborated by biologicalizing the anthropo-natural pedogenesis.