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Effects of composite materials and revegetation on soil nutrients, chemical and microbial properties in rare earth tailings

文献类型：期刊论文

作者Dai, Weijie3,4; Zhang, Ping3,4; Yang, Fen3; Wang, Min5; Yang, Huixian7; Li, Zhiying3; Wang, Mei; Liu, Renlu2; Huang, Yuanying1,6; Wu, Song5
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2022-12-01
卷号850页码:10
ISSN号0048-9697
关键词Runoff loss Soil fertility Microbial community structure Functional prediction
DOI10.1016/j.scitotenv.2022.157854
通讯作者Wei, Chaoyang(weicy@igsnrr.ac.cn)
英文摘要The mining of ionic rare earth elements in Ganzhou left large area of barren tailings with severe vegetation destruction in pressing needs of remediation. However, the remediating effects of soil additives combined with revegetation on the preservation of nutrients in the tailings and microbial communities were rarely studied. For this purpose, pilot experiments were implemented in a field, with the control group (CK) only cultivating plants without adding materials, and three treatments including peanut straw biochar composite (T1), phosphorus-magnesium composite (T2) and modified zeolite composite (T3) along with the cultivation of Medicago sativa L., Paspalum vaginatum Sw. and Lolium perenne L. Soil pH and organic matter in CK significantly decreased from 4.90 to 4.17 and from 6.62 g/kg to 3.87 g/kg after six months, respectively (p <= 0.05), while all the treatments could effectively buffer soil acidification (over 5.74) and delay the loss of soil organic matter. Soil cation exchange capacity was still below the detection limit in all the groups except T2. The results of rainfall runoff monitoring indicated that compared with CK, only T2 could significantly reduce the runoff loss of soil NO3- and SO42- by 45.61%-75.78% and 64.03%-76.12%, respectively (p <= 0.05). Compared with CK, the bacterial diversity in T2 and T3 significantly increased 21.18 % and 28.15 %, respectively (p <= 0.05), while T1 didn't change the bacterial or fungal diversity (p > 0.05). Co-occurrence network analysis showed that compared with CK, the whole microbial communities interacted more closely in the three treatments. Functional prediction of the microbial communities revealed all the treatments were dominated by carbon transforming bacteria and saprotrophic fungi except T2. This study demonstrated that the composite materials combined with revegetation couldn't retain soil nitrogen compounds and sulfate in rare earth tailings in the long term.
资助项目National Key Research and Development Program of China[2019YFC1805103] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA23010401]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:000891851900014
资助机构National Key Research and Development Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/187601]  
专题中国科学院地理科学与资源研究所
通讯作者Wei, Chaoyang
作者单位1.Minist Nat Resources Ecogeochem, Key Lab, Beijing 100037, Peoples R China
2.Jinggangshan Univ, Key Lab Agr Environm Pollut Prevent & Control Red, Sch Life Sci, Jian 343009, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Peoples R China
6.Natl Res Ctr Geoanal, Beijing 100037, Peoples R China
7.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China
推荐引用方式
GB/T 7714		 Dai, Weijie,Zhang, Ping,Yang, Fen,et al. Effects of composite materials and revegetation on soil nutrients, chemical and microbial properties in rare earth tailings[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,850:10.
APA Dai, Weijie.,Zhang, Ping.,Yang, Fen.,Wang, Min.,Yang, Huixian.,...&Wei, Chaoyang.(2022).Effects of composite materials and revegetation on soil nutrients, chemical and microbial properties in rare earth tailings.SCIENCE OF THE TOTAL ENVIRONMENT,850,10.
MLA Dai, Weijie,et al."Effects of composite materials and revegetation on soil nutrients, chemical and microbial properties in rare earth tailings".SCIENCE OF THE TOTAL ENVIRONMENT 850(2022):10.

入库方式： OAI收割

来源：地理科学与资源研究所

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