排土场不同培肥模式团聚体有机碳的累积效应  

Accumulation Effect of Aggregate Organic Carbon from Different Fertilization Modes at Open-pit Mine Dumpsites

作　　者：王桂林[1] 李明超 毕银丽 胡耀辉[2] Wang Guilin;Li Mingchao;Bi Yinli;Hu Yaohui(ShenhuaGroup Zhungeer Energy Co.Ltd.,Inner Mongolia 010300;Institute of Ecological Environment Restoration in Mine Areas of West China,Xi,an University of Science and Technology,Xi'an,Shaanxi 710054,China;of Geology and Environment,Xi san University of Science and Technology,Xi'an,710054,China;State Key Laboratory for Coal Resources and Safe Mining,China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]神华准格尔能源有限责任公司,内蒙古鄂尔多斯010300 [2]西安科技大学西部矿山生态环境修复研究院,陕西西安710054 [3]西安科技大学地质与环境学院,陕西西安710054 [4]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《水土保持通报》2024年第3期307-316,共10页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目“西部煤矿区微生物复垦后枯落物分解及其有机碳积累机制”(51974326);国家重点研发计划项目(2022YFF1303303);黄河流域生态保护和高质量发展联合研究一期项目(2022-YRUC-01-0304)。

摘　　要：[目的]研究不同培肥模式对沙棘林下的植被多样性,土壤团聚体的发育、稳定性及有机碳库恢复的影响,为矿区露天矿植被重建,土壤质量改善及团聚体碳库恢复提供依据。[方法]基于内蒙古黑岱沟露天矿内排土场沙棘示范基地,通过调查植被种群并采集土壤团聚体样品,分析丛枝菌根真菌(AMF)及其他因素(风化煤、绿肥)联合的培肥模式对于露天矿排土场植被恢复区前期土壤团聚体稳定性及有机碳恢复的影响。[结果]在6种培肥模式下,对林下植被丰富度及多样性提高效果最好的是施用绿肥并添加风化煤(沙绿风)处理;对团聚体发育及稳定性影响效果最显著的是接种AMF并施用绿肥(沙接绿)的试验组。对团聚体有机碳及全氮作用效果的分析表明,沙接绿处理下宏观团聚体有机碳和全氮显著高于仅接种AMF(沙接)处理。[结论]不同培肥模式对沙棘林下的植被多样性、土壤团聚体的发育、稳定性及有机碳库恢复具有积极作用。在露天矿植被重建时,应采用接种AMF、施用绿肥及风化煤等方式,提高土壤有机碳含量,促进团聚体发育。[Objective]The effects of different fertilization modes on the vegetation diversity,development,and stability of soil aggregates and recovery of the organic carbon pool under a sea buckthorn forest were studied in order to provide a basis for the reconstructing of open-pit mine vegetation,improving soil quality,and recovering the aggregate carbon pool.[Methods]The study was conducted on the sea buckthorn demonstration base at a dumpsite of an open-pit mine of Heidaigou,Inner Mongolia.We analyzed the effects of the combined action of fertilizer modes such as inoculation with arbuscular mycorrhizal fungi(AMF)and other treatments(added weathered coal and green fertilizer)on the stability of soil aggregates and organic carbon recovery in the early vegetation restoration area of the open-pit mine dumpsite by investigating vegetation populations and collecting soil aggregate samples.[Results]Under the six fertilizer treatment modes,the experimental group inoculated with AMF,applied green fertilizer,and added weathered coal(sand,green,wind)had the best effect on the improvement of understory vegetation diversity,and the diversity index was significantly improved compared with the control treatment.The experimental group inoculated with AMF and applied with green fertilizer(sand,green)had the most significant effect on the development and stability of aggregates.The analysis of the effect of organic carbon and total nitrogen in aggregates showed that the organic carbon and total nitrogen in aggregates for the sand and green treatments were significantly higher than those in the experimental group inoculated only with AMF.[Conclusion]Different fertilization modes had positive effects on vegetation diversity,soil aggregate development,stability,and organic carbon pool restoration under sea buckthorn forest.Inoculation with AMF,application of green fertilizer,and added weathered coal should be used to increase the content of soil organic carbon and to promote the development of aggregates during vegetation reconstruction in

关 键 词：丛枝菌根真菌 排土场 有机碳 土壤团聚体 生态修复 

分 类 号：S153.6[农业科学—土壤学]