山西农业大学学报（自然科学版）2024，Vol.44Issue(1)：101-110,10.DOI:10.13842/j.cnki.issn1671-8151.202306032
矿山废弃地植被恢复对土壤养分的影响与评价
Effects and evaluation of vegetation restoration on soil nutrients in abandoned coalmining area
摘要
Abstract
[Objective]The analysis targeted plant community types suitable for the unique habitat of arid and semi-arid mining ar-ea dumps.The study aimed to provide scientific basis for optimizing vegetation restoration models and implementing vegetation construction within open-pit coal mines.[Methods]The research focused on a dump within a large-scale prairie open-pit coal mine,investigating changes in main soil nutrients.Soil fertility of artificial vegetation types was analyzed and evaluated using grey relational degree method.[Results]The soil pH value of each test plot was>8.5,suggesting an alkaline nature.No sig-nificant difference was observed between CK and artificial vegetation(P>0.05).Artificial vegetation significantly increased soil nitrogen(N)and organic carbon(OC)content.Specifically,areas with Medicago sativa and Melilotus suaveolens showed significantly higher total nitrogen(TN)and available nitrogen(AN)content compared to other vegetated areas.Moreover,soil organic carbon(OC)content under Pinus tabulaeformis,Populus simonii,and Caragana Korshinskii communities was signifi-cantly higher than other vegetation types.Compared to natural restoration vegetation,artificial vegetation exhibited insignifi-cant impact on soil total phosphorus(TP),available phosphorus(AP)content,and total potassium(TK)content.Using grey correlation method,soil fertility status under varying artificial vegetation types were analyzed.The results indicated signifi-cantly higher soil fertility on the dump platform than the slope,with stronger correlation between soil available nitrogen(AN),available phosphorus(AP),available potassium(AK),and reference values.[Conclusion]Post-vegetation restoration in open-pit dumps revealed sufficient soil potassium;however,nitrogen,phosphorus,and other nutrients deficiencies emerged as pri-mary limiting factor for restoration.Available nutrient content emerged as a better indicator for soil fertility in prairie mining ar-ea dumps.Among the 11 vegetation configurations,soil fertility was relatively higher on platform areas hosting Ulmus pumila,Melilotus suaveolens,Pinus tabulaeformis and Medicago sativa communities,while the slope exhibited higher fertility under the Caragana Korshinskii community.关键词
排土场/土壤养分/灰色关联度/综合评价Key words
Open-pit dump/Soil nutrient/Grey correlation degree/Comprehensive evaluation分类
农业科技引用本文复制引用
珊丹,崔崴,邢恩德,杨凌云..矿山废弃地植被恢复对土壤养分的影响与评价[J].山西农业大学学报（自然科学版）,2024,44(1):101-110,10.基金项目
鄂尔多斯市科技合作重大专项(2021EEDSCXQDFZ2016) （2021EEDSCXQDFZ2016）
内蒙古自治区科技计划项目(2019GG023) （2019GG023）
