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《Journal of Arid Land Resources and Environment》 2019-04
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Plant roots distribution characteristics in the dump reclamation area of Haizhou open pit coal mining

GAO Yingxu;The Liaoning Academy of Forestry;  
To reveal the plant roots distribution characteristics in the dump reclamation area of Haizhou open pit coal mining,plant roots distribution characteristics at 0 ~ 50 cm soil layer were quantitative analyzed by using root drilling method and Win RHIZO root system analysis system for Robinia pseudoacacia land,Ulmus pumila land,shrub land( Amorpha fruticosa) and weeds land. The results showed that:(1) The root density in shrub land was larger than that of weeds land and arbor forest land,it was 154. 99 ~ 1397. 48 roots/m2 in 0 ~ 10 cm layer;the root weight density in arbor forest land was larger than that of weeds land and shrub land,it was 0. 1218 ~ 0.7076 g/cm3 in 0 ~ 10 cm layer.(2) The root length density and root surface area density of all plots decreased with the increase of depth of soil layers and showed that it in shrub land was larger than that of in weeds land and arbor forest land. The plant root of all plots was concentrated in 0 ~ 40 cm; the root length in 0 ~ 40 cm layer accounted for 76. 5% ~ 95. 1% of the 0 ~ 50 cm soil layer,and root surface area density accounted for 73. 4% ~98. 2% of the 0-50 cm layer.(3) The plant roots in Robinia pseudoacacia land and Ulmus pumila land were mainly 1 mm and 1 ~ 2 mm in diameter,while the roots in shrub land and weeds land were mainly 1 mm in diameter.
【Fund】: 国家自然科学基金(51474119)资助
【CateGory Index】: Q948;TD88
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