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Based on the rainfall duration, intensity and rainfall data of Xiejiagou small watershed from 2014 to 2018, the basic rainfall standard for erosive rainfall in the study area was obtained through the 80% frequency analysis method and statistical methods, and the characteristics of erosive rainfall within a year and between years were analyzed. The research results show that erosive rainfall has an inter-annual fluctuation characteristic, and June is the key month for the prevention of erosive rainfall in the study area. In the erosive rainfall events of heavy rain and heavy rain, high-intensity rainfall(I30≥30 mm/h)is the main driving force for soil erosion. The research results can provide reference basis for protecting ecological environment, predicting and controlling soil and water loss in small watersheds.
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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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