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Aufsatz
Settlement history of a mountain oasis in Northern Oman
(2004)
To unravel the settlement history of oases in northern Oman, data on topography, the agricultural setting, water and soil parameters and archaeological findings were collected in the Wadi Bani Awf with its head oasis Balad Seet. Data collection lasted from April 2000 to April 2003 and was based on the establishment of a 3D-georeferenced map of the oasis comprising all its major infrastructural and agronomic features. At today's Balad Seet, a total of 8.8 ha are planted to 2,800 date palms and 4.6 ha are divided into ...
Aufsatz
Organic inputs and farmers' management strategies in millet fields of western Niger
(2004)
Research on soil fertility management in sub-Saharan Africa was criticized lately for largely ignoring farmers’ management strategies and the underlying principles. To fill this gap of knowledge, detailed interviews were conducted with 108 farm households about their rationale in managing the soil fertility of 307 individual fields in the agro-pastoral village territory of Chikal in western Niger. To amplify the farmers’ information on manuring and corralling practices, repeated measurements of applied amounts of ...
Aufsatz
Nutrient cycling and field-based partial nutrient balances in two mountain oases of Oman
(2005)
Little is known about nutrient fluxes as a criterion to assess the sustainability of traditional irrigation agriculture in eastern Arabia. In this study GIS-based field research on terraced cropland and groves of date palm (Phoenix dactylifera L.) was conducted over 2 years in two mountain oases of northern Oman to determine their role as hypothesized sinks for nitrogen (N), phosphorus (P) and potassium (K). At Balad Seet 55% of the 385 fields received annual inputs of 100–500 kg N ha^-1 and 26% received 500–1400 kg ...
Aufsatz
Vegetation changes in a river oasis on the southern rim of the Taklamakan Desert in China between 1956 and 2000
(2003-11-26)
The indigenous vegetation surrounding the river oases on the southern rim of the Taklamakan Desert has drastically diminished due to overexploitation as a source of fodder, timber and fuel for the human population. The change in the spatial extent of landscape forms and vegetation types around the Qira oasis was analyzed by comparing SPOT satellite images from 1998 with aerial photographs from 1956. The analysis was supplemented by field surveys in 1999 and 2000. The study is part of a joint Chinese-European project ...
Aufsatz
Merkmale "guter Supervision"
(2000)
Als Merkmale "guter Supervision" wurden in einer empirischen Studie vor allem die strikte Aufgabenorientierung der Supervisoren, die umfassende sozialwissenschaftliche Fundierung ihrer Interventionen, ihre Triangulierungskompetenz und die Ressourcenorientierung herausgearbeitet. Den Supervisionsexperten gelingt es, die Abstinenz in der Supervision und die Handhabung von Übertragung und Widerstand feldspezifisch und gegenstandsangemessen zu variieren. Erfolgreiche Supervisoren, so ließ sich zeigen, vereinen Fähigkeiten ...
Aufsatz
Supervision in der Justizvollzugsanstalt
(2001)
Der Aufsatz lädt die Leser ein, zunächst einmal die Organisationskultur einer Justizvollzugsanstalt (JVA) kennenzulernen und in einem zweiten Schritt das besondere Aufgabenprofil für unterschiedliche supervisorische Settings in dieser Institution zu sehen. In einem dritten Schritt schließlich werden die Möglichkeiten ausgeleuchtet, die dem Interventionsinstrument Supervision innerhalb der Verwaltungsreform der Berliner Justiz zukommen, dem sogenannten "New Public Management'.
Aufsatz
Der Fall Sebnitz
(2002)
In dem vorliegenden Aufsatz soll den Ereignissen in Sebnitz um den Tod des kleinen Joseph im Sommer 2000 nachgegangen werden. Dieses Ereignis ist voll von kollektiven Wahrnehmungsverzerrungen und eignet sich gut, die Möglichkeiten kritisch-psychologischer Perspektiven aufzuzeigen. Psychologische Betrachtungsweisen und Analysen können helfen, die politischen Ereignisse und Zusammenhänge einem vertieften Verstehen zuzuführen.
Aufsatz
Effects of manure quality and application forms on soil C and N turnover of a subtropical oasis soil under laboratory conditions
(2003)
Our knowledge of the agricultural sustainability of the millennia-old mountain oases in northern Oman is restricted in particular with respect to C and N turnover. A laboratory study was conducted (1) to analyse the effects of rewetting and drying on soil microorganisms after adding different manures, (2) to investigate the effects of mulching or incorporating of these manures, and (3) to evaluate the relationships between C and N mineralisation rates and manure quality indices. During the first 9-day rewetting and ...
Aufsatz
Supervisionsformate in der forensischen Klinik
(2004)
Der Aufsatz lädt die Leser ein, die Organisationskultur und die Systemumwelt einer totalen Institution Forensik kennen zu lernen. Das besondere Aufgabenprofil für unterschiedliche supervisorische Settings in dieser Institution (Einzelsupervision, Gruppen- und Teamsupervision) wird herausgearbeitet. In einem dritten Schritt werden schließlich die Möglichkeiten ausgeleuchtet, die dem Interventionsinstrument Supervision innerhalb der überall geforderten Klinikreformen zukommen kann.
Aufsatz
Soil organic carbon management for sustainable land use in Sudano-Sahelian West Africa
(2001)
Judged by their negative nutrient balances, low soil cover and low productivity, the predominant agro-pastoral farming systems in the Sudano-Sahelian zone of West Africa are highly unsustainable for crop production intensification. With kaolinite as the main clay type, the cation exchange capacity of the soils in this region, often less than 1 cmol_c kg^-1 soil, depends heavily on the organic carbon (Corg) content. However, due to low carbon sequestration and to the microbe, termite and temperature-induced rapid ...