To study on water replenishment effect of ecological gate in the Tarim River Basin, the MODFLOW was used to establish the numerical simulation of the two-dimensional flow movement of the groundwater profile in the Wusiman section, and to analyze the evolution process of the groundwater flow field in 4 years. On this basis, the two schemes with or without ecological sluice were predicted and compared. The results show that in the fifth year under the two prediction schemes, compared with the single main river channel, the buried depth area less than 8 m in the study area increased by 6.62% by using the ecological sluice water conveyance scheme. The ecological gates restored the groundwater level far away from the ecological area of the main river channel, and the groundwater level on the north side of the section increased by 2-3 m on average. Compared with the single main channel water conveyance, the phreatic evaporation consumed by the increment of groundwater storage per cubic meter was reduced by 24.6%. The ecological sluice solves the problem that the groundwater level is difficult to recover in the ecological area far away from the main river channel under the traditional water conveyance mode, and creates conditions for the restoration of the river network ecosystem formed by multiple branches in the middle reaches and the safety belt of biodiversity along the main stream.
| 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 |