Open Access
Subscription or Fee Access
A Statistical Approach to the Evaluation and Modelling Of Contamination in an Agro-Ecosystem
S. Taibi-Hassani, P. Lepelletier, A. Blot, J.C. Thoisy-Dur
Abstract
Soil protection and preservation are crucial to continuing sustainable development of our society. Multidisciplinary research on bioindicators is under way to better understand the impact of chemical or physical stress on communities of soil organisms. In this context, our purpose is to develop a statistical discriminant approach to evaluate and analyse the stability of soil ecosystems in a farming context in northern France. Thirty-six physical, chemical, microbiological and biochemical parameters were measured, on two sites with conventional farming and pasture. In order to mimic the conditions of agricultural practices, soil microcosms were contaminated with minute quantities of copper and the same parameters were measured. The impact of agricultural practices and the analysis of relations between the microbiological, biochemical and physicochemical soil parameters indicated strong overlapping of the fungal, bacterial and functional soil descriptors. The results show that the Random Forests method is most appropriate for the available experimental data in this analysis. This statistical approach is scalable to a wider panel of variables and is applicable to situations with heavier contamination and more human presence.
Keywords
bioindicators, soil, logistic regression, Random Forests.
Full Text:
PDF
Disclaimer/Regarding indexing issue:
We have provided the online access of all issues and papers to the indexing agencies (as given on journal web site). It’s depend on indexing agencies when, how and what manner they can index or not. Hence, we like to inform that on the basis of earlier indexing, we can’t predict the today or future indexing policy of third party (i.e. indexing agencies) as they have right to discontinue any journal at any time without prior information to the journal. So, please neither sends any question nor expects any answer from us on the behalf of third party i.e. indexing agencies.Hence, we will not issue any certificate or letter for indexing issue. Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies website to get the authentic information. Also: DOI is paid service which provided by a third party. We never mentioned that we go for this for our any journal. However, journal have no objection if author go directly for this paid DOI service.