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Outline
Based on the investigation of 50 rural black and odorous water remediation projects in Chongqing, this study constructed a "Pressure-State-Response-Benefit" (PSRB) framework model, screened and determined the evaluation index from the four dimensions of Pressure, State, Response and Benefit, and formed an evaluation index system. Based on the investigation of 11 typical cases of black and odorous water specifically ponds, ditches, and rivers that had been remediated for over six months, an evaluation was conducted. Among these, the remediation effect of pond-type black and odorous water was tracked and evaluated in June, August, and October 2023. The results indicate that the weights of the four dimensions Pressure, State, Response and Benefit were 0.27, 0.21, 0.36, and 0.16, respectively. The negative indexes with higher weights (C11, C14, C24, C36) outnumber the positive indexes with higher weights (C31, C41). This suggests that although the remediation of rural black and odorous water has received a positive response, the water that have been remediated still face significant pressure and have limited benefits. Among them, the remediation effect of 10cases was rated as "Effective," while 1case was rated as "Passing." In the Pressure dimension, factors such as "high population load in the water area," "damage to sewage interception and pipe networks," and "residual black and odorous sludge," as well as in the Response dimension, "the investment in water body remediation is relatively high" and "insufficient implementation of operation and maintenance management" were the main adverse influencing factors of the remediation effect.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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