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Analysis of the Ecological Carrying Capacity of Fish Resources in Shengjin Lake, Anhui Province, China

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  • Guiyou Zhang

    (College of Economics & Management, Anhui Agricultural University, Hefei 230036, China)

  • Yan Lu

    (College of Economics & Management, Anhui Agricultural University, Hefei 230036, China)

  • Zijun Fang

    (College of Economics & Management, Anhui Agricultural University, Hefei 230036, China)

  • Hong Yang

    (College of Economics & Management, Anhui Agricultural University, Hefei 230036, China)

  • Zhong Wei

    (College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China)

Abstract

The carrying capacity of fish is related to the sustainability of fisheries’ activities in water bodies. The fish carrying capacity of a water body is the maximum fish yield that can be carried by the natural bait organisms in the water body under the ideal natural conditions without feeding and fertilization. The evaluation of fish productivity is an important basis for rational stocking, rational fishing, and the scientific utilization of natural bait resources in a water area. This paper adopts the background data of the Shengjin Lake fishery ecosystem and uses the bait-based estimation method. The results show that (1) the annual yield of silver carp fed on phytoplankton is 1.5 million kg; (2) the annual yield of bighead carp fed on zooplankton is 1.295 million kg; (3) the annual yield of benthos is 310,000 kg; (4) the annual yield of organic detritus is 280,000 kg; and (5) as the coverage of water grass in Shengjin Lake is less than 10%, it should be protected and restored rather than used by fish. In general, the annual maximum carrying capacity of fish in Shengjin Lake is 3.385 million kg, except for water and grass.

Suggested Citation

  • Guiyou Zhang & Yan Lu & Zijun Fang & Hong Yang & Zhong Wei, 2022. "Analysis of the Ecological Carrying Capacity of Fish Resources in Shengjin Lake, Anhui Province, China," IJERPH, MDPI, vol. 19(13), pages 1-13, July.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:13:p:8177-:d:855331
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    References listed on IDEAS

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