Population density, soil nutrient depletion, and economic growth in sub-Saharan Africa

By P. Drechsel, Lucy Gyiele, D. Kunze, O. Cofie. 2001

293 citations recorded by the source corpus.

View Paper: https://www.semanticscholar.org/paper/678439c574bd5be164d729a7568bdeb1dbc59f74

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Citations in the corpus

The potential of pigeonpea ( Cajanus cajan (L.) Millsp.) in Africa (2007, background): “The soils are already depleted (Drechsel et al. , 2001) and the situation is worsened by increasing effects of soil erosion (Lal, 2003) as a result of deforestation (Stiles, 1984). The UN Millenium Project (2005) has indicated the potential for poverty alleviation in Africa through appropriate irrig”
Effects of rising rural population density on smallholder agriculture in Kenya (2014, background): “…reasons for the decline in agricultural intensiﬁcation beyond the threshold of 500–600 persons/km 2 , it is very plausibly associated with soil mining/degradation as a result of continuous cultivation and congestion in the densely populated areas (Drechsel et al., 2001; Tittonell and Giller, 2012).”
Resources, Policies, and Agricultural Productivity in Sub-Saharan Africa (2013, background): “There is evidence that as population and cultivated area have expanded, long-term fallow land has declined (Pingali, Bigot, and Binswanger, 1987) and nutrients are being extracted from soils faster than they are being replenished (Stoorvogel and Smaling, 1990; Drechsel et al., 2001). Based on physic”
The Role of Smallholder Farms in a Changing World (2020, background): “This inverse relationship is potentially the result of unsustainable agricultural intensification (Drechsel et al. 2001).”
Simulating soil fertility and poverty dynamics in Uganda: A bio-economic multi-agent systems approach (2007, background): “High population density and rapid population growth have put pressure on the capacity of the land to supply food in sufficient amounts, which is a phenomenon also observed in many other parts of sub-Saharan Africa (Drechsel et al., 2001).”
OECD-FAO Agricultural Outlook 2019-2028 (2018, unknown): “However, a large body of literature in SSA points to soil degradation arising from unsustainable cultivation practices in regions with a high population density, for example parts of Kenya and Malawi (Stoorvogel and Smaling, 1990; Drechsel et al., 2001; Tittonell and Giller, 2012).”
Sustainable energy in Africa: A comprehensive data and policies review (2014, background): “negative impacts on people's quality of life: for example adding more pressure on the agricultural sector, leading to soil impoverishment and increasing risk of famine [102] or exacerbating consequences of unplanned urbanization such as slums dwellers increase [101,103].”
Global Soil Nutrient Depletion and Yield Reduction (2005, unknown): “, 1999; Hartemink, 1997a and 1997b; Krogh, 1997; Nandwa and Bekunda, 1998; Rhodes, 1995; Scholes and Scholes, 1999; Wortmann and Kaizzi, 1998), including the economic performance of nutrient flows (Drechsel et al., 2001; Van der Pol, 1992).”
Sustainable intensification of agricultural systems in the Central African Highlands: The need for institutional innovation (2016, background): “Especially in regions where pressure on agricultural land is high, and soil fertility and yields are low, sustainable intensification can enhance food security and economic development (Drechsel et al., 2001; Vanlauwe et al., 2014).”
Tenure Insecurity and Investment in Soil Conservation. Evidence from Malawi (2013, result): “…has experienced higher erosion rates; about 40% of the agricultural land considered in this study is subject to some levels of erosion, compared to other sub-Saharan African countries with similar levels of population density due to its speciﬁc topography (Drechsel, Gyiele, Kunze, & Coﬁe, 2001).”
Climatic Change and Rural-Urban Migration: The Case of Sub-Saharan Africa (2006, unknown): “In addition, pressures represented by increasing populations and changing technology add to the problem of land deterioration related to agricultural practices, see for example Drechsel et al. (2001).”
How does population density influence agricultural intensification and productivity? Evidence from Malawi (2014, background): “This may be especially true in high-density areas of longstanding continuous cultivation where soil degradation (particularly diminished soil organic matter) may have given rise to poor responsiveness to inorganic fertilizer applications (Drechsel et al., 2001).”