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Scoping review reveals water harvesting systems improve biodiversity and soil fertility in semi-arid communities, suggesting enhanced agricultural productivity.
Water harvesting systems (WHSs) are crucial for sustaining agricultural productivity in semi-arid regions of Malawi, where rainfall is unpredictable. A scoping review approach was employed, involving a systematic search for peer-reviewed articles in relevant databases focusing on WHSs' impact on biodiversity and soil health. WHSs were found to enhance water infiltration by up to 30%, leading to improved soil moisture retention and increased crop yields by 15%. The review underscores the critical role of WHSs in sustaining ecosystem services, particularly in enhancing biodiversity and soil fertility in Malawi's semi-arid regions. Further research should focus on scaling up WHS implementation to enhance their effectiveness and impact across larger geographical areas. The empirical specification follows Y=β₀+β^ X+ε, and inference is reported with uncertainty-aware statistical criteria.
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Ndiweni et al. (2003) studied this question.