Abstract
A study was carried out in the small watershed of Chaohu Lake, where a scattered multi-pond system, as a part of the land-inland water ecotone, was found to be a good protective zone in the management of the lake. This multi-pond system can effectively reduce the non-point source load of nutrients, such as phosphorus and nitrogen from runoff water, and filter out sediments before they reach the lake. There are 150 artificial ponds in this small watershed, covering a surface area of 35.54 ha, which represents just under 5% of the whole catchment area. The nutrient retention in the first 9 months of the dry year 1988 was more than 90%. This multi-pond system needs low capital cost and energy consumption for maintenance, and is suitable for irrigation and drainage, while it recycles water and nutrients within the terrestrial agroecosystem. As a result of this case study, a multipond system is being proposed as part of a long term management strategy for the watershed.
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Yin, C., Zhao, M., Jin, W., Lan, Z. (1993). A multi-pond system as a protective zone for the management of lakes in China. In: Hillbricht-Ilkowska, A., Pieczyńska, E. (eds) Nutrient Dynamics and Retention in Land/Water Ecotones of Lowland, Temperate Lakes and Rivers. Developments in Hydrobiology, vol 82. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1602-2_34
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DOI: https://doi.org/10.1007/978-94-011-1602-2_34
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