Li Jun-jian, Liu Feng, Zhou Xiao-mei
Huan Jing Ke Xue. 2015 May;36(5):1836-41.
Abstract: Ecological degradation in the mining areas is greatly aggravated in recent several decades, and ecological restoration has become the primary measure for the sustainable development. Soil microbe and enzyme activity are sensitive indices to evaluate soil quality. Ecological reconstruction was initiated in Antaibao mining area, and we tested soil physicochemical properties, microbial populations of azotobacteria, nitrifying-bacteria and denitrifying-bacteria, and enzyme activities (including sucrose, polyphenol oxidase, dehydrogenase and urease) under different regeneration scenarios. Regeneration scenarios had significant effects on soil physicochemical properties, microbial population and enzyme activities. Total nitrogen was strongly correlated with azotobacteria and nitrifying-bacteria, however, total nitrogen was not correlated with denitrifying-bacteria. Phenol oxidase activity was negatively correlated with soil organic carbon and total nitrogen, but other enzyme activities were positively correlated with soil organic carbon and total nitrogen. Principal Component Analysis ( PCA) was applied to analyze the integrated fertility index (IFI). The highest and lowest IFIs were in Robinia pseudoacacia-Pinus tabuliformis mixed forests and un-reclaimed area, respectively. R. pseudoacacia-P. tabuliformis mixed forests were feasible for reclaimed mining areas in semi-arid region Northwest Shanxi.
近几十年来，矿区生态退化加剧，生态修复已成为可持续发展的首要举措。土壤微生物和酶活性是评估土壤质量的敏感指标。在安太堡矿区开展生态重建工作，我们测定了不同恢复情景下的土壤理化性质、固氮菌、硝化细菌和反硝化细菌的微生物数量以及酶活性（包括蔗糖酶、多酚氧化酶、脱氢酶和脲酶）。恢复情景对土壤理化性质、微生物数量和酶活性有显著影响。全氮与固氮菌和硝化细菌密切相关，然而，全氮与反硝化细菌不相关。酚氧化酶活性与土壤有机碳和全氮呈负相关，但其他酶活性与土壤有机碳和全氮呈正相关。应用主成分分析（PCA）来分析综合肥力指数（IFI）。IFI最高值和最低值分别出现在刺槐 - 油松混交林和未复垦区域。刺槐 - 油松混交林对于晋西北半干旱地区的复垦矿区是可行的。
