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This study was conducted within the area enclosed by the Third Ring Road of Nanchang, China. The Green View Index (GVI) was calculated using semantic segmentation of panoramic street view imagery, while Land Surface Temperature (LST) was retrieved through the Google Earth Engine (GEE) platform. Hotspot analysis, profile analysis, and Geographically Weighted Regression (GWR) model were employed to investigate the spatiotemporal patterns of GVI and LST and explore the scale-dependent impact of GVI on LST. The main conclusions are as follows: (1) From 2017 to 2021, the entire study area showed a declining trend, with 60.9% of the area experiencing a reduction in GVI. However, the local GVI had been enhanced and had formed a continuous green advantage zone, and the proportion of statistically significant hotspots increased from 31.6% to 41.1%. (2) During the same period, the overall LST had increased, and the Urban Heat Island (UHI) effect had intensified. The proportion of high and sub-high temperature areas rose sharply from 6.5% to 25.0%, and the proportion of strong and extremely strong UHI areas expanded from 46.0% to 50.8%. (3) The relationship between GVI and LST was foundto be spatial non-stationarity, with R2 values varyingacross different grid scales. At the 500m5500m resolution, the GWR model achieved the best performance, with R2 values of 0.58, 0.65, and 0.70 in 2017, 2019, and 2021, respectively. (4) A significant scale effect was identified in the impact of GVI on LST, and the 500m×500m grid was identified as the optimal analysis scale within the study area. The researchresults reveal the spatiotemporal variations of urban GVI and its multi-scale impacts on LST. This not only helps to understandthe impactof urban greening on LST from the perspective of three-dimensional greenvolume, but also providestheoretical references for urban planning.
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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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