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作者： Paul Ferrar Ftse Maarten Ryder the atse crawford fund Australia Course Coordinator CSIRO AdelaideAustralia

＜正＞ The aim of the International Master Class ’Soil Borne Pathogens of Wheat in China’ is to provide training to active research scientists working with wheat pathology in provinces of China where soil borne pathogens are considered to be constraints to wheat productivity. These problems have many features in common with those encountered by Australian wheat producers. Australian scientists are world leaders in research and expertise in this field and are significant resource personnel for this Class. China also has experts in particular aspects of this subject, and this Chinese expertise has also been utilised for expert teaching in the Master Class.

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Impact of Soil Borne Pathogens of Wheat on Grain Production

Impact of Soil Borne Pathogens of Wheat on Grain Production

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作者： Albert Rovira formerly Chief Research Scientist CSIROAustralianow Coordinator for The Crawford Fund of South Australia

＜正＞ IntroductionThe purpose for writing this introductory paper for the Master Class is to show the impact of some soil borne pathogens of wheat on grain production in southern Australia and also to briefly describe some of the factors which affect the manifestation of some of these *** paper is not comprehensive and will present some of the results obtained by myself and other Australian researchers over the past 30 years which I see as particularly relevant to the Master Class. I will not give references - these will be covered during the course.

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Geotechnical and GIS-based environmental factors and vulnerability studies of the Okemesi landslide,Nigeria

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Regional Sustainability 2023年第3期4卷 249-260页

作者： Oluwakemi Bolanle AKINTAN Johnson Adedeji OLUSOLA Olaniyi Patrick IMOLE Moyosoluwa Odunayo ADEYEMI Department of Geography and Planning Science Ekiti State UniversityAdo EkitiNigeria Department of Geology and Mineral Sciences Crawford UniversityIgbesaOgun StateNigeria

Landslide is a geological hazard typically associated with extreme events such as earthquakes,heavy rainfall,volcanic eruptions,changes in groundwater level,*** study was carried out in Okemesi-Ekiti(also known as Okemesi),Southwest Nigeria,with the purpose of using remote sensing and GIS technologies to analyze the environmental factors(grain size,direct shear strength resistance,rainfall data,wet density,surface,and slope)resulting in the occurrence of the Okemesi *** study also aimed to conduct a vulnerability analysis in the study area to identify regions with a probability of landslide *** grain size analysis of the soil in the Okemesi landslide area showed that slope materials comprised 17.14%gravel,59.31%sand,and 19.48%fines,thus the soil type could be classified as poorly graded gravely sand with a high possibility of landslide *** geomorphic characteristics of the study area was characterized by slopes ranging from 0.00°to 49.00°,while most slopes in the area were less than 8.00°.The slope aspect direction was mainly in south(157.51°–202.50°),southwest(202.51°–247.50°),west(247.51°–292.50°),and north(0.00°–22.50°and 337.51°–360.00°).The highlands were primarily bounded by the slope directions of north(0.00°–22.50°and 337.51°–360.00°),northeast(22.51°–67.50°),east(67.51°–112.51°),and southeast(112.51°–157.50°),which indicated the potential direction of mass *** study area can be divided into three vulnerability zones:high,medium,and low,with the area percentages of 9.00%,61.80%,and 29.20%,*** analysis suggested that the Okemesi landslide was likely triggered by rainfall,which might have weakened the physical structure of slope *** the causes and impacts of landslides is crucial for policymakers to implement measures to mitigate landslide hazards,protect infrastructure,and prevent the loss of life in the landslide-prone regions.

关键词： Rainfall-induced landslide Landslide hazards Slope materials Rainfall Geomorphology Vulnerability zone Okemesi-Ekiti(Okemesi)

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