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The deep integration of the digital economy and real economy(DRI) serves as a pivotal strategy for driving China's high-quality economic development. Leveraging social network analysis (SNA), a DRI network was constructed using patent data from listed construction enterprises, their DRI levels were measured, and its impact mechanisms on corporate performance were investigated. Key findings include DRI significantly enhances corporate performance through dual pathways of knowledge breadth expansion and product competitiveness enhancement, with results remaining robust after addressing endogeneity concerns and rigorous robustness checks. Heterogeneity analysis reveals stronger performance improvements in high-tech enterprises, private-owned enterprises, and firms in growth/maturity stages, while stronger intellectual property protection and advanced digital infrastructure amplify these effects. Building on these insights, targeted policy recommendations are proposed to deepen DRI adoption in the construction sector.
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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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