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Distribution of selenium and zinc in soil-crop system and their relationship with environmental factors

文献类型：期刊论文

作者Xu, Yuefeng1,2; Hao, Zhe3,4; Li, Yonghua1; Li, Hairong1; Wang, Li1; Zang, Zhenfeng1,2; Liao, Xiaoyong1; Zhang, Ru1,2
刊名CHEMOSPHERE
出版日期2020-03-01
卷号242页码:9
关键词Selenium Zinc Soil mineral elements Topography Vegetation coverage
ISSN号0045-6535
DOI10.1016/j.chemosphere.2019.125289
通讯作者Li, Yonghua(yhli@igsnrr.ac.cn) ; Liao, Xiaoyong(liaoxy@igsnrr.ac.cn)
英文摘要Selenium (Se) and zinc (Zn) are essential microelements for humans with crucial biological functions. In this study, we determined Se and Zn concentrations in soils and rice grains on Hainan Island and investigated how their spatial distributions are related to soil mineral elements, topography, and vegetation coverage. Overall, the concentrations of Se and Zn in soils were higher than the background values for Chinese soil; the Se concentrations in rice grains were higher than the threshold value for Se deficiency in grains, but Zn concentrations were lower than the proposed critical concentration. Both Spearman's correlation and stepwise regression analysis showed that the concentrations of soil Fe and Ca significantly affected soil Se and Zn: a difference of 1 g kg(-1) in soil Fe changed soil Se by 2.820 mu g kg(-1) and soil Zn by 0.785 mg kg(-1), respectively, while a difference of 1 g kg(-1) in soil Ca changed soil Se by 3.249 mu g kg(-1) and soil Zn by 0.356 mg kg(-1), respectively. For rice grains, Se and Zn concentrations decreased with increasing elevation; every 100 m increase in elevation could decrease Se by 0.022 mg kg(-1) and Zn by 0.912 mg kg(-1). Moreover, the impact of Fe and Ca on soil Zn was relatively strong in the northeast region, while the influence of elevation on rice grain Se was more significant in the central region. The findings contribute to a better understanding of factors driving the distribution of Se and Zn in soils and crops. (C) 2019 Elsevier Ltd. All rights reserved.
WOS关键词WHEAT TRITICUM-AESTIVUM ; ORGANIC-MATTER ; HEAVY-METALS ; SPATIAL-DISTRIBUTION ; GEOSTATISTICAL ANALYSES ; LAND-USE ; BIOAVAILABILITY ; TOPOGRAPHY ; TEMPERATURE ; SPECIATION
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19040303] ; National Natural Science Foundation of China[41671499] ; Second Tibetan Plateau Scientific Expedition and Research Program of Ministry of Science and Technology of the People's Republic of China[2019QZKK0607]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000509786600027
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program of Ministry of Science and Technology of the People's Republic of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/132354]  
专题中国科学院地理科学与资源研究所
通讯作者Li, Yonghua; Liao, Xiaoyong
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Minist Nat Resources, Key Lab Engn Oceanog, Inst Oceanog 2, Hangzhou 310012, Peoples R China
4.Nanjing Univ, Collaborat Innovat Ctr South China Sea Studies, Nanjing 210093, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Yuefeng,Hao, Zhe,Li, Yonghua,et al. Distribution of selenium and zinc in soil-crop system and their relationship with environmental factors[J]. CHEMOSPHERE,2020,242:9.
APA Xu, Yuefeng.,Hao, Zhe.,Li, Yonghua.,Li, Hairong.,Wang, Li.,...&Zhang, Ru.(2020).Distribution of selenium and zinc in soil-crop system and their relationship with environmental factors.CHEMOSPHERE,242,9.
MLA Xu, Yuefeng,et al."Distribution of selenium and zinc in soil-crop system and their relationship with environmental factors".CHEMOSPHERE 242(2020):9.

入库方式： OAI收割

来源：地理科学与资源研究所

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