Effects of Mining-induced Slope Collapse Fractures on Soil Moisture and Vegetation in Shenfu Coal Mining Area
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    Abstract:

    [Objective] The effects of mining-induced collapse fracture occurrence(two years after collapse) on slope vegetation characteristics were demonstrated to provide theoretical support for revegetation and improvement of ecological environment in the coal mining subsidence area.[Methods] Soil bulk density, soil moisture and vegetation on two sides of collapse fractures in the Shenfu coal mining area were investigated and analyzed.[Results] (1) The collapse fracture occurrence made surrounding soil loose and thus resulted to the decrease of soil bulk density nearby. (2) In the case of fracture striking at right angle or close right angle to slope aspect, the fractures affected soil moisture about 3 m slope downward, as the water status in the slope downward part of the fracture became worse due to the intercepting effect of runoff. In the walls of the fracture, soil water content on fracture slope was lower than that the one on slope without fracture as a result of strong evaporation. (3) The aboveground biomass of the vegetation on the fractured slope lower than the one on non-fracture slope. The farther from the fracture, the higher of aboveground biomass revived.[Conclusion] If no other factors exist, the fracture occurrence can worsen soil moisture condition within it; and in the downward part, it can further inhibite the growth of vegetation.

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李超,刘文兆,宋晓强.神府矿区采煤塌陷裂隙对坡面土壤水分及植被生长状况的影响[J].水土保持通报英文版,2016,36(6):121-125

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History
  • Received:April 12,2016
  • Revised:May 31,2016
  • Adopted:
  • Online: January 13,2017
  • Published: