1,721,063 research outputs found
Soil Erosion and Sustainable Land Management (SLM)
Full text linkThis Special Issue titled “Soil Erosion and Sustainable Land Management” presents 13 chapters organized into four main parts. The first part deals with assessment of soil erosion that covers historical sediment dating to understand past environmental impacts due to tillage; laboratory simulation to clarify the effect of soil surface microtopography; integrated field observation and the random forest machine learning algorithm to assess watershed-scale soil erosion assessment; and developing the sediment delivery distributed (SEDD) model for sub-watershed erosion risk prioritization. In Part II, the factors controlling soil erosion and vegetation degradation as influenced by topographic positions and climatic regions; long-term land use change; and improper implementation of land management measures are well dealt with. Part III presents different land management technologies that could reduce soil erosion at various spatial scales; improve land productivity of marginal lands with soil microbes; and reclaim degraded farmland using dredged reservoir sediments. The final part relates livelihood diversification to climate vulnerability as well as the coping strategy to the adverse impacts of soil erosion through sustainable land management implementation which opens prospects for policy formulation. The studies cover regions of Africa, Europe, North America and Asia, being dominantly conducted under the framework of international scientific collaborations through employing a range techniques and scales, from the laboratory to watershed scales. We believe those unique features of the book could attract the interest of the wider scientific community worldwide
Policy implications of multiple concurrent soil erosion processes in European farmland
Full text linkSoil erosion is a serious threat to soil functions leading to land productivity decline and multiple off-site effects. Here we show, using a multi-model approach, the spatial risk of soil erosion by water, wind, tillage and harvesting and where the co-occurrence of these different processes is observed. Moreover, we analysed where these locations of multiple erosion co-occurrence are likely to intersect with the projected increase of dry/wet climate conditions. Of the similar to 110 million hectares (M ha) of arable land in the European Union, our estimates show that 43 M ha are vulnerable to a single driver of erosion, 15.6 M ha to two drivers and 0.81 M ha to three or more drivers. About 3.2 M ha of arable land are vulnerable to the possible interaction of increased flood, drought, water and wind erosion. We contend that this set of predictions serves as a basis for developing an efficient stratified monitoring network and informing targeted mitigation strategies under the Common Agricultural Policy 2023-2027. The road to the sustainable, carbon-neutral and biodiversity-friendly system of agriculture advocated for in the EU Green Deal goes through a thematic strategy for soil protection from multiple concurrent erosion processes
Land management to mitigate soil erosion in the upper Blue Nile River Basin - Overview of Tottori University's Research Activities
No full textThe presentation introduces the Arid Land Research Center (ALRC)-TU, an Overview of soil erosion problem and its management initiatives, the thematic research areas and achievements, ongoing and upcoming research activities
A Transdisciplinary Framework to Bridge Science–Policy–Development Gaps in Global Land Management Initiatives
No full textEffective implementation of Sustainable Land Management (SLM) remains a major challenge worldwide because of its weak integration within the domains of science, policy, and development practice. Based on global analyses of soil erosion risk and the degree of implementation of SLM research, policies, and practices at the country level, we propose a transdisciplinary framework to
address soil erosion through SLM. In the analysis, we used indices of the policy–development, science–policy, and science–development interfaces to evaluate the overall science–policy–development interface (SPDI) in 236 countries. Over 190 countries (81%) were found to be currently facing moderate or high risk of increased soil erosion from two or more erosion processes, and 182 countries (77%) were found to have a SPDI level that was lower than their soil erosion risk implying the urgent need for a transdisciplinary framework that supports the implementation of future soil erosion research and development projects. Our proposed transdisciplinary framework comprises seven stages, starting from “shared research framing” and ending with “ex-post evaluation”. The framework’s practical application is discussed in the context of a recent project, emphasizing the need for country-specific studies to develop tailored frameworks.EEA Santa Cruz, INTAFil: Haregeweyn, Nigussie. Tottori University. International Platform for Dryland Research and Education; JapónFil: Tsunekawa, Atsushi. Tottori University. International Platform for Dryland Research and Education; JapónFil: Fenta, Ayele Almaw. Tottori University. International Platform for Dryland Research and Education; JapónFil: Borrelli, Pasquale. University of Basel. Environmental Geosciences. Department of Environmental Sciences; SuizaFil: Panagos, Panos. Joint Research Centre Ispra. European Commission; ItaliaFil: Aynekulu, Ermias. World Agroforestry (ICRAF); Kenia.Fil: Abe, Takeshi. Tottori University. International Platform for Dryland Research and Education; JapónFil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina.Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Simon, West. The Australian National University. Crawford School of Public Policy; Australia.Fil: Simon, West. Stockholm University. Stockholm Resilience Centre; SueciaFil: Simon, West. Charles Darwin University. Northern Institute; Australia
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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