Is Small Better?

• Tác giả: Elodie Blanc
• Ngôn ngữ: eng
• Ký hiệu phân loại: 378.15 Specific levels of higher education, evening school
• Thông tin xuất bản: Oxford University Press on behalf of the World Bank, 2016
• Bộ sưu tập: Tài liệu truy cập mở
• ID: 325379
• Chủ đề: 1. agricultural productivity; 2. canal network; 3. catchment area; 4. dam engineering; 5. dam location

Tóm tắt

We estimate and compare the effects of small and large irrigation dams on cropland productivity in South Africa. To this end, we construct a panel data set of South African river basins. The econometric analysis reveals that although large dams increase cropland productivity downstream, they have a negative effect on cropland within the vicinity. However, their existence can enhance the relatively small positive impact of local small dams. Although a cost-benefit analysis of irrigation benefits shows that small dams may be more viable than large ones, large dams can play a potentially important role within a system of both types of dams.