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[1]LÜ,Chun-juan,BAI Zhong-ke.Soil and Rock Erosion and Soil and Water Conservation Effects of Opencast Mine Dump[J].Research of Soil and Water Conservation,2010,17(06):14-19.

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Soil and Rock Erosion and Soil and Water Conservation Effects of Opencast Mine Dump

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 06 Page number: 14-19 Column: Public date: 2010-12-20

Title:: Soil and Rock Erosion and Soil and Water Conservation Effects of Opencast Mine Dump

Author(s):: LÜ Chun-juan^1,2, BAI Zhong-ke³; 1. College of Resources & Environmental Science, Shanxi Agriculture University, Taigu, Shanxi 030801, China;
2. College of Water and Soil Conservation Bejing Forestry University, Beijing 100083, China;
3. School of Land Science and Technology, China University of Geosciences, Key Laboratory of Land Reclamation of Ministry of Land and Resources, Beijing 100083, China

Keywords:: opencast coal mine; rainstorm; reclaimed vegetation; soil and rock erosion; soil and water conservation effect

CLC:: S157

DOI:: -

Abstract:: Taking the dump reclaimed for 10 years as experiment platform in Pingshuo opencast coal mine, after rainstorm (p=2%), the characteristics of soil and rock erosion of different reclamation stages were surveyed and analyzed by time-space-alternative methods. The results showed that: the pile-surface was the best solution for the dump ‘serious surface compaction’ and ‘inhomogeneous settlement’ for the newly-built land; at reclaiming initial stage (1～3 years), the effects of water and soil conservation of vegetation was not significant because the herbaceous plants had function on soil and water losses alone and various forms of erosion were widespread; at reclaiming later stage (4～10 years), erosions were wholly weakened with the increase of biodiversity, the improvement of vegetation coverage rates and accumulating gradually of dry branches and leaves, but there still was gully erosion in margin of slope; compared with reclaiming initial land, the effects of water and soil conservation of shrubs and trees were highlighted gradually; even there were no runoff and soil erosion in the sample plot planting arbor, shrub and herb. For artificial dump, soil erosion is the potential danger. But the rational allocation of planting is an economic and efficient measure for soil and water conservation with the legal system improvement of reclamation.

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