Table 4.
Comparison of the valuations of the integrated rice–fish–duck farming ecosystem and the rice monoculture system (2020).
| Section | Ecosystem Services of the Rice–Fish–Duck System | Value (10 Thousand) |
(%) | Rice-Monoculture System |
Added Value | Added Proportion |
|---|---|---|---|---|---|---|
| Provisioning Service value |
red rice, fish and duck | 176,086.68 | 53.10% | 43,088.88 | 132,997.8 | 208.66% |
| Gas regulation | carbon fixation and oxygen release | 5230.84 | 5230.84 | - | - | |
| greenhouse gas reduction | 7166.86 | 8220.23 | 1053.37 | 14.70% | ||
| gas regulation | −1936.02 | −0.58% | −2989.391585 | −1053.37 | −54.41% | |
| Climate regulation | cooling effect | 112,737.17 | 34.00% | 112,737.17 | - | - |
| Air purification | purification of air quality | 11,994.02 | 3.62% | 11,994.02 | - | - |
| Pest control | reduce the pesticide | 501.50 | 0.15% | - | - | - |
| Maintaining biodiversity | maintaining ecological balance and biodiversity | 1219.62 | 0.37% | 1219.62 | - | - |
| Water regulation | conserve of groundwater sources | 308.98 | 0.09% | 308.98 | - | - |
| Soil conservation | improve the soil structure | 58.5764 | 0.02% | 60.36 | 1.78 | 2.96% |
| Soil organic accumulation | accumulation of organic matter | 7562.99 | 2.28% | 7562.99 | - | - |
| Cultural service | landscape aesthetic value and tourism | 23,085.33 | 6.96% | 9789.28 | 13,296.05 | 135.82% |
| CNY | 331,619.5452 | 100% | 183,771.9128 | 147,847.6324 | 80.45% |