5 research outputs found

    Indice de qualité des sols ::un outil d'aide à la décision pour la prise en compte de la qualité des sols pour la régulation hydrique d'un territoire

    No full text
    Les fonctions de rĂ©gulations hydriques fournies par les sols sont trĂšs reconnues aujourd’hui et sollicitĂ©es pour contenir le ruissellement, en milieu urbain ou agricole. L’indice de qualitĂ© des sols (IQS) a pour ambition de pouvoir noter et reprĂ©senter spatialement les fonctions des sols, dont celle de rĂ©gulation hydrique, sur la base de l’analyse de propriĂ©tĂ© des sols. Cependant, la quantification des propriĂ©tĂ©s des sols n’est pas aisĂ©e principalement en raison du manque de donnĂ©es sur les propriĂ©tĂ©s des sols ou du coĂ»t de leur acquisition. La dĂ©marche IQSM ici prĂ©sentĂ©e, rĂ©sout cette difficultĂ© en s’affranchissant de l’étape de campagne de mesure Ă  l’échelle d’un territoire entier mais en tirant partie des informations gĂ©orĂ©fĂ©rencĂ©es existantes sur le territoire. De ces informations territoriales, des estimations de qualitĂ© des propriĂ©tĂ©s des sols sont attribuĂ©es par avis d’expert. Les informations analytiques sur les sols qui seraient dĂ©jĂ  acquises sont intĂ©grĂ©es. Un logigramme dĂ©finit la prĂ©dominance d’une information sur une autre. Pour tenir compte des diffĂ©rents niveaux de fiabilitĂ©s des informations dĂ©livrĂ©es, une note de fiabilitĂ© est associĂ©e Ă  l’estimation, dont le calcul est liĂ© au logigramme. Une reprĂ©sentation de la qualitĂ© fonction de rĂ©gulation hydrique des sols est ainsi quantifiĂ©e Ă  l’échelle d’un amĂ©nagement ou du territoire et permet l’aide Ă  la dĂ©cision quant aux amĂ©nagements futurs ou le renseignement d’un modĂšle hydrologique en l’absence de donnĂ©es d’infiltration ou de ruissellement.The water regulation functions provided by soils are very well recognised today and are called upon to contain runoff in urban and agricultural environments. The soil quality index (SQI) aims to record and spatially represent soil functions, including water regulation, on the basis of soil property analysis. However, the quantification of soil properties is not easy, mainly because of the lack of data on soil properties or the cost of acquiring them. The IQSM approach presented here solves this difficulty by avoiding the stage of a measurement campaign on the scale of an entire territory but by taking advantage of existing georeferenced information on the territory. From this territorial information, quality estimates of soil properties are assigned by expert opinion. Analytical soil information which has already been acquired is integrated. A flow chart defines the predominance of one piece of information over another. In order to take into account the different levels of reliability of the information provided, a reliability score is associated with the estimate, the calculation of which is linked to the flowchart. A representation of the quality function of soil water regulation is thus quantified at the scale of a development project or territory and allows decision support for future developments. It also allows coupling to a hydrological model in the absence of infiltration or runoff data

    Matteodo2016_Freq&Cover change

    No full text
    Species of the six plant communities and their corresponding frequencies in the historical and recent surveys, the difference between recent and historical frequency, the p-value derived from the permutation test on frequency, the mean cover in the historical and recent surveys, the difference of mean cover (recent-historical), and the significance value derived from the permutation test on cover. The latter test was applied only on species with historical and recent frequency values ≄ 25%. Species are ordered firstly by increasing p-values for the frequency test and secondly by increasing p-values for the cover test. Species with significant frequency or mean cover changes are in bold

    Accelerated increase in plant species richness on mountain summits is linked to warming

    No full text
    We thank D. Barolin, J. Birks, A. Björken, C. Björken, S. Dahle, U. Deppe, G. Dussassois, J. V. FerrĂĄndez, T. Gassner, S. Giovanettina, F. Giuntoli, Ø. Lunde HeggebĂž, K. Herz, A. Jost, K. Kallnik, W. Kapfer, T. Kronstad, H. Laukeland, S. Nießner, M. Olson, P. Roux-Fouillet, K. Schofield, M. Suen, D. Watson, J. Wells Abbott, J. Zaremba and numerous additional helpers for fieldwork support; P. Barancˇ ok, J. L. Benito Alonso, M. Camenisch, G. Coldea, J. Dick, M. Gottfried, G. Grabherr, J. I. Holten, J. KollĂĄr, P. Larsson, M. Mallaun, O. Michelsen, U. Molau, M. Pus¾  cas¾ , T. Scheurer, P. Unterluggauer, L. Villar, G.-R. Walther, and numerous helpers for data originating from the GLORIA network13; C. Jenks for linguistic support; and the following institutions for funding. M.J.S.: Danish Carlsbergfondet (CF14-0148), EU Marie Sklodowska-Curie action (grant 707491). C.R., V.S., S.W.: Velux Foundation, Switzerland. C.R., V.S., S.W., J.-P.T., P.V.: Swiss Federal Office for the Environment (FOEN). A.K.: Swiss National Science Foundation (31003A_144011 to C.R.), Basler Stiftung fĂŒr biologische Forschung, Switzerland. J.K.: Fram Centre, Norway (362202). J.K., J.-A.G., P.C., B.J.: Polish-Norwegian Research Programme of the Norwegian National Centre for Research and Development (Pol-Nor/196829/87/2013). O.F.-A., M.J.H., S.P.: Instituto de Estudios Altoaragoneses (Huesca, Spain). S.D.: Austrian Climate Research Programme (ACRP, project 368575: DISEQU-ALP). F.J.: Botanical Society of Britain & Ireland; Alpine Garden Society, UK. M.J.H.: Felix de Azara research grant (IBERSUMIT project, DPH, Spain). R.K.: Slovak Research and Development Agency (APVV 0866-12). S.N., D.G.: VILLUM Foundation’s Young Investigator Programme (VKR023456; Denmark). S.P.: RamĂłn y Cajal fellowship (RYC-2013-14164, Ministerio de EconomĂ­a y Competitividad, Spain). J.-C.S.: European Research Council (ERC-2012-StG-310886-HISTFUNC); VILLUM Investigator project (VILLUM FONDEN grant 16549; Denmark). S.W.: WSL internal grant (201307N0678, Switzerland); EU FP7 Interact Transnational Access (AlpFlor Europe). S.W., S.B., F.J., M.J.H.: Swiss Botanical Society Alpine Flower Fund. Time and effort was supported by sDiv, the Synthesis Centre of iDiv, Germany (DFG FZT 118, sUMMITDiv working group).Peer reviewedPostprin
    corecore