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Aufsatz
High-Quality Solid Fuel Production from Leaf Litter of Urban Street Trees
(2016-11-30)
Leaf litter is a growing concern for cities. Due to adherent dirt such biomass is rarely utilized nowadays but may constitute a renewable energy source for communities or private households. Leaf litter from main roads, residential areas and city centres collected by the vacuum technique or the sweeper technique was sampled and analysed for ash content and chemical composition. Ash content of leaf litter collected by the sweeping technique was higher (21.6%–40.1% dry matter, DM) than in material collected by the ...
Aufsatz
The impact of uncertainty on smallholder farmers' income in Kyrgyzstan
(2019-12-12)
The farming systems in the mountain areas of Kyrgyzstan are primarily characterised by small-scale crop and livestock activities. Farmers are faced with several environmental, socio-economic and political challenges and constraints that result in significant uncertainties affecting their operations. This paper attempts to model how various sources of uncertainty collectively affected the smallholders’ farm incomes during a mid-term horizon using Monte Carlo simulation. The analyses were based on data collected through ...
Aufsatz
Fusion of Ultrasonic and Spectral Sensor Data for Improving the Estimation of Biomass in Grasslands with Heterogeneous Sward Structure
(2017-01-21)
An accurate estimation of biomass is needed to understand the spatio-temporal changes of forage resources in pasture ecosystems and to support grazing management decisions. A timely evaluation of biomass is challenging, as it requires efficient means such as technical sensing methods to assess numerous data and create continuous maps. In order to calibrate ultrasonic and spectral sensors, a field experiment with heterogeneous pastures continuously stocked by cows at three grazing intensities was conducted. Sensor ...
Aufsatz
Liming effects on reproductive growth and yield components of maize grown on an acid rainforest soil
(2019-12-03)
Maize was planted on limed and unlimed plots to study the effect of soil acidity on reproductive growth and yield components of the crop in Owerri southeastern Nigeria. Eight (8) maize varieties (Factor A) and two lime levels (0 and 2 t ha-1, Factor B) were arranged as a factorial experiment in a randomised complete block design with three replications. The number of days to 50 % anthesis and silking, anthesis-silking interval (ASI), physiological maturity and grain filling duration were measured to determine the ...
Dissertation
Effects of climate change on fungal community structure and organic matter turnover in soil profiles along elevation gradients in alpine ecosystems
(2019-10)
Although elevation patterns of diversity for plants and animals are well known, understanding of variations in fungal community structure along elevation gradients is limited. Soil fungi play an important role in soil microbial communities, where they improve soil organic matter (SOM) turnover and nutrient circulation. Hence, any change in fungal community structure will have strong effects on soil and ecosystem functioning. The main purpose of this thesis is therefore to investigate how climate induced shifts in ...
Zeitschrift
Vol. 5 No. 1 (2017): Farming Cities towards Urban Food Policies
(Department of Organic Food Quality & Food Culture, Faculty of Organic Agricultural Sciences, the University of Kassel and the Federation of German Scientists (VDW), 2017)
Zeitschrift
Vol. 4 No. 3 (2016): Climate Change Mitigation and Adaptation in Agriculture and Food Systems
(Department of Organic Food Quality & Food Culture, Faculty of Organic Agricultural Sciences, the University of Kassel and the Federation of German Scientists (VDW), 2016)
Zeitschrift
Vol. 4 No. 2 (2016): Food System Techniques and Agricultural Practices
(Department of Organic Food Quality & Food Culture, Faculty of Organic Agricultural Sciences, the University of Kassel and the Federation of German Scientists (VDW), 2016)
Zeitschrift
Vol. 6 No. 1 (2018): Sustainable Agriculture For Healthy Ecosystem
(Specialized Partnerships in Sustainable Food Systems and Food Sovereignty, Faculty of Organic Agricultural Sciences, the University of Kassel, Germany and the Federation of German Scientists (VDW), 2018)