Many African countries are richly endowed with land, but the productive potential of the land base has been underutilised in farming systems with low intensity of external inputs and high intensity of labour. At the same time, mining and erosion of soils have been common features of rural Africa...

To promote biodiversity, a diverse landscape is necessary. Structural change in agriculture and increasing cost pressure have led to the trend of fewer farms and larger farming units with less diversity. Reversing this trend is a societal task that requires a willingness to make sacrifices. For...

In this paper I analyze the 'Nitrogen Paradox' stated by Robert Allen in his interpretation of the English Agricultural Revolution as an adaptive response to the agro-climatic impacts of the last phase of the Little Ice Age. The colder and more humid climate during the second half of the 17th...

Die in der Nitratrichtlinie vorgegebenen Ziele für die Qualität des Grundwassers konnten bislang weder in Deutschland insgesamt noch in Rheinland-Pfalz (RP) flächendeckend erreicht werden (BMU und BMEL, 2020). In RP befanden sich 2019/2020 35 der insgesamt 117 Grundwasserkörper in schlechtem...

Scientists and economists are increasingly worried that biofuels production is leading to land use changes in the form of competition with food crops or loss of natural ecosystems. I estimate acreage conversion in response to shocks in sugarcane (a biofuels feedstock) and soybean (thought to be...

With paroxysm of technology due to new invention and innovations, nation across the world are experiencing extreme developmental activity. Though these activities meant for betterment of society but on the contrary it is posing threat to natural environment. The damages could be water pollution,...

Increasing concerns about energy security and climate change mitigation have led to significant policy support for biofuels, particularly for cellulosic biofuels. This paper examines the short- and long-run effects of Renewable Fuel Standard (RFS) on the mix of agricultural and forest biomass,...

The study presents a comparative analysis of eight Vegetation Indices (VIs) used to examine vegetation greenness over the northern coasts of Iceland. The geographical extent of the study area is set by the coordinates of the two fjords, Eyjafjörður and Skagafjörður, notable for their...

The presented paper is focused on satellite image analysis using GRASS GIS. The aim is to perform comparative analysis of the land cover changes in Tokyo metropolitan area through spatial analysis. Data include multi-temporal Landsat TM satellite images on 2002, 2006 and 2011. The images were...

Why, after 30 years of aid, were so many African countries no better off in the 1980s than they had been at independence? Why, indeed, were so many of them slipping back and earlier economic achievements being undermined?Concentrating on Sudan, the Poverty of Nations examined what had gone wrong...