With the early opening of urban rail transit, Shanghai has been a forerunner in urban rail transit operatingline renovation in China. The experiences and lessons learned from Shanghai in operatingline renovations have reference value for other cities in China. First, the operatingline renovation process of the Shanghai urban rail transit was reviewed. Three main development trends indicate that the focus is on a gradual transition from individual conditions to overall conditions, that the renovation contents are gradually being diversified and systematized, and that the renovation demands that align with the development goals of the city and urban rail transit network are continuously deepening and expanding. Second, developing a renovation plan with systematic thinking, minimizing the impact on passengers while ensuring construction safety and quality during renovation, and active postevaluation after renovation are summarized as the key points in the operatingline renovation of Shanghai urban rail transit. The difficulties in operatingline renovation of Shanghai urban rail transit were analyzed in terms of limited financial support, highefficiency requirements for internal and external communication, challenges in project management, and insufficient technology. Important future works for operatingline renovations of Shanghai urban rail transit are discussed, including additional financing channels, research on improvement and innovation of construction plans and management mechanisms, deeper evaluation of the operational urban rail transit network, and the technology of nonclosure renovation of underground stations without prereserved conditions.
| 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 |