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研究不同复垦模式对采煤沉陷区复垦土壤团聚体分布特征及稳定性的影响,为选择适宜的复垦植被及培肥沉陷区土壤肥力提供理论依据。在神府东胜采煤沉陷区设置4种复垦模式(对照、文冠果、欧李和长柄扁桃复垦模式),分析土壤机械稳定性和水稳性团聚体含量以及团聚体稳定性。结果表明:不同复垦模式机械稳定性团聚体均以>0.25mm大团聚体为主,最高的文冠果植被复垦地达到了86.36%;水稳性团聚体含量中大团聚体含量有所下降,0-20cm表层土壤中文冠果植被的大团聚体含量极显著高于对照,20-40cm的下层土壤欧李和长柄扁桃的大团聚体含量显著高于文冠果复垦地。土壤团聚体稳定率表现为0-20cm表层土壤文冠果复垦模式显著高于对照,文冠果复垦地团聚体稳定性最好,而20-40cm下层土壤以长柄扁桃复垦地团聚体稳定性最好。结合当地生长条件以及植被的长势得出文冠果可以作为采煤沉陷区复垦的首选植被,值得在神府东胜采煤沉陷区推广应用。
The effects of different reclamation modes on the distribution characteristics and stability of reclaimed soil aggregates in mining subsidence areas were studied to provide a theoretical basis for selecting appropriate reclamation vegetation and soil fertility in subsidence areas. Four reclamation models were set up in the Shenfu Dongsheng coal mining subsidence area (control, Wen Guan Guo, Ou Li and long-stem almond reclamation mode), soil mechanical stability and water stable aggregates content and stability of aggregates were analyzed . The results showed that the aggregates of mechanical stability in different reclamation modes were dominated by> 0.25mm aggregates, the highest of which was 86.36% in the reclaimed vegetation and the content of large aggregates in the water-stable aggregates , The content of macroaggregate of crown crown vegetation in 0-20cm soil layer was significantly higher than that of the control. The content of macroaggregates in the soil layer under 20-40cm was significantly higher than that of the Wen Guannguo reclamation land. The stability of soil aggregates showed that the pattern of reclamation from the crown soil of 0-20 cm soil layer was significantly higher than that of the control, the stability of the aggregates was the best in the land of reclamation from 20 to 40 cm, The best body stability. Combining with the local growth conditions and the growth of vegetation, it can be concluded that Wen Guan Guo can be used as the preferred vegetation for reclamation of mining subsidence area and is worth popularizing and application in the Shenfu Dongsheng mining subsidence area.