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Outline
Based on gravity data, topographic information, and the Crust1.0 global Crustal structure model, this study employs discrete wavelet decomposition, analytical continuation, the Parker-Oldenburg iterative inversion algorithm, and gravity edge detection methods to investigate the characteristics of gravity anomalies and microplate tectonics in northeast Asia. This study divides northeast Asia into 15 microplates and classifies them into three categories including island arc type, cratonic type, and accretionary type. Since the Mesozoic, the tectonic and magmatic activities of the microplates in northeast Asia have been dominated by the subduction of the (Paleo-) Pacific plate, exhibiting significant spatial variations in crustal thickness. The Moho discontinuity is shallower in subduction zones, while it is deeper beneath orogenic belts and cratonic regions. Key tectonic boundaries such as the Mudanjiang suture zone and the Xinlin-Xiguitu suture zone archive the multi-stage amalgamation of microplates in northeast Asia. Both deep-seated geophysical anomalies and surficial magmatic activities collectively unravel the geodynamic linkage between (paleo-) Pacific subduction and the present-day tectonic architecture of northeast Asia.
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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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