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[1]ZHAO Chuan,HE Liping,LI Guixiang,et al.Impacts of Vegetation Restoration on the Soil Organic Carbon Storage in Kunyang Phosphorite Mine[J].Research of Soil and Water Conservation,2017,24(05):168-171,177.

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Impacts of Vegetation Restoration on the Soil Organic Carbon Storage in Kunyang Phosphorite Mine

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 05 Page number: 168-171,177 Column: Public date: 2017-10-28

Title:: Impacts of Vegetation Restoration on the Soil Organic Carbon Storage in Kunyang Phosphorite Mine

Author(s):: ZHAO Chuan, HE Liping, LI Guixiang, SHAO Jinping, CHAI Yong; Yunnan Academy of Forestry, Kunming 650201, China

Keywords:: soil organic carbon storage; vegetation restoration; forest types; Kunyang phosphorite mine

CLC:: S714.5

DOI:: -

Abstract:: Vegetation restoration can keep phosphate rock mining, effectively curb the mining area ecological environment degradation, and gradually restore the mining area of degraded ecosystem, is one of the most effective measures. The results show that significant differences of soil organic carbon(SOC) contents exist between the different forest types and soil layers, the average organic carbon contents under seven different vegetation restoration plantations (Ⅰ—Ⅶ) are 14.29 times, 11.83 times, 11.40 times, 5.89 times, 15.48 times, 15.59 times, 18.53 times of that of the abandoned land, and the difference is significant (p < 0.05); SOC contents of 7 stands present the phenomenon of surface enrichment, showing a decreasing trend from the surface to the deep layer, SOC content is mainly accumulates in 0—20 cm soil layer; vertical distribution of soil organic carbon densitie and vertical distribution of soil organic carbon content characteristics in seven kinds of stands are consistent, soil organic carbon density reduced with increase of soil depth, with soil organic carbon density in topsoil 0—20 cm is maximum; organic carbon reserves decreased with increase of soil depth, while soil organic carbon was mainly concentrated in the 0—20 cm soil layer, the average content is 53.60%. After vegetation restoration, soil organic carbon contents of 0—20 cm soil layers in 7 kinds of plantations increase by 26.53%, 20.39%, 34.48%, 20.39%, 28.62%, 39.52% and 28.62%, respectively, indicating that the soil conditions after vegetation restoration are significantly better than that of the remnant waste land without the recovery measures in the current mining area.

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