|
| Variable attributes | Disaster elements | Primary indices | Secondary indices | Reference source |
|
| Characteristic variable | Hazard factors | Rainfall data | Process accumulated rainfall (J1: mm) | Gong et al. [45], Li et al. [46], Huang et al. [47] |
| Continuous rainfall days (J2: h) |
| Accumulated rainfall in 12 h (J3: mm) |
| Accumulated rainfall in 24 h (J4: mm) |
| Hazard-pregnant environment | Natural environment | Digital elevation model (DEM) (Z1: m) | Wang and Deng [48], Hu et al. [49] |
| Relief amplitude (Z2: m) |
| Vegetation coverage (Z3: %) |
| Density of the river network (Z4: m2/m2) |
| Hazard-bearing body | Social economic data | Density of population (S1: thousand people/km2) | Gong et al. [50], Pan et al. [51], and Li et al. [46] |
| GDP of per person (S2: people/ten thousand yuan) |
| Proportion of garden green space area (S3: %) |
| Proportion of house area (S4: %) |
| Disaster resilience | Disaster resilience and construction | GDP of every city (K1: ten million yuan) | Zhang et al. [52] and Xu et al. [53] |
| GDP of per square kilometer (K2: ten million yuan/km2) |
| Length of urban drainage pipeline (K3: ten thousand km) |
|
| Target variable | Rainstorm and flood disaster loss | Disaster loss situation | Number of rainstorm and flood disasters (Y1: time) | Zhang et al. [54] and Wang et al. [55] |
| Direct economic loss (Y2: hundred million yuan) |
|
