首页|不同生态修复方式对内蒙古荒漠草原露天矿山土壤肥力的影响

不同生态修复方式对内蒙古荒漠草原露天矿山土壤肥力的影响

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为了探究不同修复方式对内蒙古露天受损矿区土壤的修复效果，分别用植生袋修复、生态包修复、植生毯修复、自然恢复和客土改良5种生态修复方式对乌海露天矿区受损土壤进行修复，测定修复后土壤的理化性质并进行主成分分析，采用内梅罗肥力指数和IFI指数评价修复后土壤的肥力。结果表明:①与原生植被相比，植生袋修复后土壤的有机质、水解氮、速效钾、速效磷含量显著增多(P＜0。05)，分别升高了 1 361。11％、742。73％、294。74％、124。36％;内梅罗肥力指数和IFI指数分别为2。00和1。16，显著高于其他修复方式(P＜0。05)，修复效果最好。②主成分分析结果显示，有机质、水解氮、铵态氮、速效钾以及全钾含量是研究区土壤生态修复效果的主要限制因子。
Effects of different ecological restoration methods on soil fertility of open-pit mine in Inner Mongolia desert grassland
In order to explore the remediation effects of different restoration methods on the soil of damaged open-pit mining area in Inner Mongolia,five ecological remediation methods,including plant bag remediation,ecological bag remediation,plant blanket remediation,natural restoration and exotic soil improvement,were used to remediate the soil in Wuhai open-pit coal mine in Inner Mongolia.The physical and chemical properties of the repaired soil were measured and principal component analysis was carried out.Nemerow fertility index and IFI index were used to evaluate the soil fertility after remediation.The re-sults showed that:① Compared with the original vegetation,the contents of organic matter,hydrolyzable nitrogen,available potassium and available phosphorus in the soil treated with plant bag remediation were significantly increased(P＜0.05),by 1 361.11％,742.73％,294.74％and 124.36％respectively;Nemerow fertility index and IFI index were 2.00 and 1.16 re-spectively,which were significantly higher than these of other restoration methods(P＜0.05),with the best restoration effect.② The results of principal component analysis showed that organic matter,hydrolyzed nitrogen,ammonium nitrogen,available potassium and total potassium were the main limiting factors for soil ecological restoration in the study area.

ecological restorationsoil fertilityprincipal component analysisopen-pit coal minephysical and chemical prop-erties of soil

刘梓莹、高志伟、吴肇惠、张莉、王子烨、李亚楠、张国刚、贾美清

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天津师范大学生命科学学院,天津 300387

天津师范大学天津市水资源与水环境重点实验室,天津 300387

生态修复 土壤肥力 主成分分析 露天煤矿 土壤理化性质

国家自然科学基金资助项目国家自然科学基金资助项目国家自然科学基金资助项目国家自然科学基金资助项目国家重点研发计划项目天津市自然科学基金资助项目天津市自然科学基金资助项目天津市重点研发计划科技支撑重点项目天津市重点研发计划科技支撑重点项目天津市重点研发计划科技支撑重点项目

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2024

10.19638/j.issn1671-1114.20240406

天津师范大学学报(自然科学版)
天津师范大学

天津师范大学学报(自然科学版)

CSTPCD北大核心
影响因子：0.311
ISSN：1671-1114
年,卷(期)：2024.44(4)