The Role of Plant Diversity in the Soil Aggregate Stability of a Degraded Coal Mine  

退化煤矿土壤团聚体稳定性中植物多样性的作用

作　　者：Rabia ZAFAR Rabia ZAFAR(悉尼大学生物科学学院,澳大利亚悉尼2006;萨达尔巴哈杜尔汗女子大学环境科学系,巴基斯坦奎达08763)

机构地区：[1]School of Biological Sciences,The University of Sydney,Sydney 2006,Australia [2]Environmental Science Department,Sardar Bahadur Khan Women’s University,Quetta 08763,Pakistan

出　　处：《Journal of Resources and Ecology》2025年第1期115-123,共9页资源与生态学报(英文版)

摘　　要：The function of mine spoil following restoration depends on the development of soil aggregation.Two models may contribute to consideration of how spoil may be restored:the hierarchical model and the interdependence model.This study examined the relationship between plant diversity and water stable aggregate in mine spoil.Four plant species Dodonaea viscosa(Jacq),Pittosporum phillyraeoides DC,Hymenosporum flavum(Hook)F.Muell,and Pandorea pandorana(Andrew Steenis)inoculated with eight different Arbuscular mycorrhizal(AM)fungi were either grown as a single species or a mixture of all species in pots containing mine spoil amended with 18%compost.Soil aggregation was measured as mean weight diameter(MWD)and organic carbon was determined after 12 months.Aggregation of spoil from under the mixed plant treatment was in the middle of the range for single species,for overall MWD and weight of each of the water-stable aggregate fractions.MWD of soil under P.phillyraeoides was higher than for all other single plant species and plant mixture.Organic carbon in the water-stable micro-aggregate sized fraction was greater in all planted than the unplanted treatment.The mean soil carbon concentration of P.pandorana was higher than all other single plant treatments and plant mixture.The study suggests that the development of aggregation of mine spoil amended with compost is independent of plant diversity.矿区废弃地在修复后的功能取决于土壤团聚体的发展。层次模型和相互依赖模型可能有助于设计如何恢复矿渣。本研究检验了植物多样性与矿渣中水稳定团聚体之间的关系。四种植物—粘质杜松(Dodonaeaviscosa(Jacq))、白檀(PittosporumphillyraeoidesDC)、黄肉豆蔻(Hymenosporumflavum(Hook)F.Muell)和潘多拉藤(Pandoreapandorana(Andrew Steenis))—接种了8种不同的丛枝菌根(AM)真菌,要么作为单一物种,要么所有物种混合种植在含有18%堆肥的矿区废弃地盆栽中生长。12个月后,测量了土壤团聚体的平均加权直径以及有机碳含量。混合植物处理下的矿区废弃地土壤团聚体在单一物种的整体平均加权直径处于居中水平;白檀下的土壤团聚体平均加权直径高于所有其他单一植物物种和植物混合物的直径。所有种植处理的水稳定微团聚体中的有机碳含量高于未种植处理的样本。潘多拉藤的土壤碳密度平均值高于所有其他单一植物处理和植物混合物。研究表明,用堆肥改良的矿区废弃地团聚体的发展与植物多样性无关。

关 键 词：mine soil rehabilitation plant-fungal interaction soil structure soil organic carbon plant diversity 

分 类 号：X144[环境科学与工程—环境科学] Q948[生物学—植物学]