Full
Outline
Mining activities will cause contamination to the mining area and the surrounding soil. Reasonable layout of sampling points is very important for mastering the soil environmental conditions and using remote sensing to invert the spatial pattern of soil contamination. Taking an iron mine area in Luanzhou and the surrounding area affected by mining activities as the sampling area, according to the principle of zoning control, the study area was divided into mining activities directly affected area and mining activities indirectly affected area. The classical statistical analysis method was used to calculate the reasonable sampling number and layout the sampling grid. Based on landscape diversity index and weighted average method, the layout scheme of soil heavy metal monitoring sampling points was designed. The results show that 215 sampling points are calculated by reasonable sampling number in different precision partitions. Among them, 34 grids are selected by landscape diversity index in mining activities directly affected area, and a total of 196 sampling points are allocated. The mining activities indirectly affected area uses the weighted average method to allocate 19 sampling points through the area of land-use type. After different precision, different methods to determine the distribution of forest land sampling number 39, farmland sampling number 95, bare land sampling number 20, river beach sampling number 16, tailings and mining area stope sampling number 45. The sampling scheme is based on remote sensing images, combined with the geographical location of the study area and the distribution characteristics of land-use types, taking into account the actual situation of sampling costs, which helps to reduce the sampling workload. There may be uncertain factors such as mining activities, topography and hydrology in the actual sampling work, so the sampling scheme needs to be adjusted in combination with the on-site situation.
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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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