Intercropped Pteris vittata L. and Morus alba L. presents a safe utilization mode for arsenic-contaminated soil

doi:10.1016/j.scitotenv.2016.11.148

	Intercropped Pteris vittata L. and Morus alba L. presents a safe utilization mode for arsenic-contaminated soil
	Wan, Xiaoming; Lei, Mei; Chen, Tongbin; Yang, Junxing
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2017-02-01
卷号	579 页码:1467-1475
关键词	Arsenic Cash crop Heavy metal Hyperaccumulator Intercropping
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2016.11.148
通讯作者	Lei, Mei(leim@igsnrr.ac.cn)
英文摘要	Intercropping technology provides income for owners of contaminated soil without increasing environmental risk. Therefore, intercropping of arsenic (As) hyperaccumulator Pteris vittata L. with economic crops is nowwidely utilized in slightly or moderately As-contaminated farmlands. However, the mechanisms for As mobilization and absorption within the intercropping system are still unclear. To clarify As mobilization and absorption within an intercropping system, portable X-ray fluorescence spectrometry and sequential extraction were utilized to detect the spatial distribution and speciation of As in an intercropped system of P. vittata and cash crop mulberry (Morus alba L.). Compared with the P. vittata monoculture, P. vittata intercropping had higher As concentration, which may have been caused by the efficient exploitation of a greater As source in soil. Compared with the M. alba monoculture, M. alba intercropping had lower As concentration, which may have been caused by the As depletion by P. vittata roots. Spatial distribution of As in the soil indicated a "valley" around the P. vittata roots in both monocultured and intercropped systems, implying that As was depleted around the P. vittata roots. Continuous As extraction confirmed that both P. vittata monoculture and P. vittata and M. alba intercropping can efficiently control the risk of As soil contamination. Moreover, the properties of M. alba leaves were further studied. Mulberry leaves in the intercropping system satisfied the national feed standards. Therefore, intercropping presents a safe utilization mode for As-contaminated soil and can increase the income from silkworm-rearing M. alba leaves, without extra environmental risk. (C) 2016 Published by Elsevier B.V.
资助项目	National Natural Science Foundation of China[41301547] ; Program for Bingwei Excellent Talents in Institute of Geographic Sciences and Natural Resources Research, CAS
WOS关键词	NEPHROLEPIS-EXALTATA ; PLANT-GROWTH ; ACCUMULATION ; PHYTOREMEDIATION ; RHIZOSPHERE ; MULBERRY ; SPECIATION ; EFFICIENCY ; PHOSPHORUS ; NITROGEN
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000393320400045
资助机构	National Natural Science Foundation of China ; Program for Bingwei Excellent Talents in Institute of Geographic Sciences and Natural Resources Research, CAS
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/64979]
专题	中国科学院地理科学与资源研究所
通讯作者	Lei, Mei
作者单位	Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Wan, Xiaoming,Lei, Mei,Chen, Tongbin,et al. Intercropped Pteris vittata L. and Morus alba L. presents a safe utilization mode for arsenic-contaminated soil[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,579:1467-1475.
APA	Wan, Xiaoming,Lei, Mei,Chen, Tongbin,&Yang, Junxing.(2017).Intercropped Pteris vittata L. and Morus alba L. presents a safe utilization mode for arsenic-contaminated soil.SCIENCE OF THE TOTAL ENVIRONMENT,579,1467-1475.
MLA	Wan, Xiaoming,et al."Intercropped Pteris vittata L. and Morus alba L. presents a safe utilization mode for arsenic-contaminated soil".SCIENCE OF THE TOTAL ENVIRONMENT 579(2017):1467-1475.