Sr-Nd elements and isotopes as tracers of dust input in a tropical soil chronosequence

文献类型： 外文期刊

第一作者： Li, Jianwu

作者： Li, Jianwu;Ruan, Li;Wang, Hailong;Li, Jianwu;Zhang, Ganlin;Yang, Jinlin;Ruan, Li

作者机构：

关键词： Soils;Asian dust;Sr-Nd isotopes;Basalt;Hainan Island

期刊名称：GEODERMA （ 影响因子：6.114； 五年影响因子：6.183 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Although Hainan Island is located in one of the relative least dusty regions in China, Asian dust has been identified in Hainan soils. We used Stand Nd isotopes of soils, saprolite, bedrocks and Asian dust to not only identify long-range transported dust but also quantify the dust contribution to Hainan soils. Sr and Nd isotopic compositions of the soils are dearly affected by dust deposition. The soils in near-surface horizons have Sr-87/Sr-86 values as high as 0.7193 that are more radiogenic than the basalts, indicating involvement of Asian dust; whereas deep horizons show a dominantly basaltic signature (Sr-87/Sr-86 = 0.7038). The epsilon(Nd)(0) values for Hainan soils range from -6.46 to 1.85. The higher value closely approximates the values measured for the Hainan lava, and the lower value indicates the fingerprint of the Asian dust. The Sr-87/Sr-86 and epsilon(Nd)(0) values for soils also show a progressive trend with time, which implies that dust accumulates with soil age. We calculated the dust accretion rates for Sr-based and Nd-based to quantify the dust contributions to soils. The estimate of dust accreted shows an approximate increasing trend with the ages of soils for Sr-based and Nd-based methods. The soils in the old sites are likely to have undergone long-term dust input and accumulated high dust levels. We also find excellent agreement in the amount of dust present and dust accretion rates based on the two tracers at the 300 ka site and the 1120 ka site, respectively. Besides lower dust deposition in the Pliocene epoch than the late Quaternary over eastern Eurasian, the loss of mineralogical and geochemical tracers over million year time scales also may lead to underestimates of time-averaged dust deposition rates in the old sites. Therefore, the young sites (180 ka and 300 ka) should provide more realistic estimates of average dust accretion rates. The importance of dust in the tropical Hainan soil chronosequence highlights the significance of dust accretion to soils globally. (C) 2015 Elsevier B.V. All rights reserved.

分类号： S15

  • 相关文献

[1]CHARACTERISTICS OF RHIZOSPHERE AND BULK SOIL MICROBIAL COMMUNITIES IN RUBBER PLANTATIONS IN HAINAN ISLAND, CHINA. Guo, H. C.,Wang, W. B.,Luo, X. H.,Wu, X. P.,Guo, H. C..

[2]How do amorphous sesquioxides affect and contribute to butachlor retention in soils?. Liu, Zhongzhen,Zeng, Fang,Liu, Zhongzhen,He, Yan,Xu, Jianming. 2013

[3]Mercury contamination of fungi genus Xerocomus in the Yunnan province in China and the region of Europe. Kojta, Anna K.,Saba, Martyna,Falandysz, Jerzy,Zhang, Ji,Wang, Yuanzhong,Li, Tao. 2015

[4]Degradation of Fluxapyroxad in Soils and Water/Sediment Systems Under Aerobic or Anaerobic Conditions. Liu, Xingang,Chen, Chao,Dong, Fengshou,Xu, Jun,Zheng, Yongquan.

[5]Prediction model for mercury transfer from soil to corn grain and its cross-species extrapolation. Hu Hai-yan,Li Zhao-jun,Feng Yao,Liu Yuan-wang,Xue Jian-ming,Davis, Murray,Liang Yong-Chao. 2016

[6]A statistical approach to determine fluxapyroxad and its three metabolites in soils, sediment and sludge based on a combination of chemometric tools and a modified quick, easy, cheap, effective, rugged and safe method. Liu, Xingang,Zhu, Yulong,Dong, Fengshou,Xu, Jun,Zheng, Yongquan,Li, Minmin.

[7]Prediction models for transfer of arsenic from soil to corn grain (Zea mays L.). Yang, Hua,Li, Zhaojun,Liang, Yongchao,Yang, Hua,Long, Jian,Xue, Jianming,Davis, Murray,He, Wenxiang.

[8]Effect of liming and seasonal variation on lead concentration of tea plant (Camellia sinensis (L.) O. Kuntze). Han, Wen-Yan,Shi, Yuan-Zhi,Ma, Li-Feng,Ruan, Jiang-Yun,Zhao, Fang-Jie.

[9]Effects of soil temperature on degradation of oxytetracycline in soils. Li Zhao-jun,Fan Fei-fei,Long Jian. 2013

[10]Degradation of cyflumetofen and formation of its main metabolites in soils and water/sediment systems. Liu, Xingang,Xu, Jun,Dong, Fengshou,Wu, Xiaohu,Zheng, Yongquan,Li, Minmin. 2016

[11]Scale and causes of lead contamination in Chinese tea. Han, WY,Zhao, FJ,Shi, YZ,Ma, LF,Ruan, JY.

[12]Influence factors for the oxidation of pyrite by oxygen and birnessite in aqueous systems. Qiu, Guohong,Luo, Yao,Chen, Cheng,Lv, Qiang,Tan, Wenfeng,Liu, Fan,Liu, Chengshuai.

[13]Potassium release rates from ustisols and their application. Lu, XN,Zhang, MH,Xu, JM.

[14]Ethnobotanical study on medicinal plants around Limu Mountains of Hainan Island, China. Zheng, Xi-long,Wei, Jian-he,Li, Rong-tao,Zheng, Xi-long,Liu, Shou-bai,Dai, Hao-fu,Sun, Wei. 2013

[15]Population genetic diversity of mud crab (Scylla paramamosain) in Hainan Island of China based on mitochondrial DNA. Ma, Hongyu,Ma, Chunyan,Ma, Lingbo.

[16]Object-Oriented Classification of Rubber Plantations from Landsat Satellite Imagery. Dai, ShengPei,Li, HaiLiang,Luo, HongXia,Li, MaoFen,Fang, JiHua,Wang, LingLing,Luo, Wei,Cao, JianHua. 2014

[17]Mapping deciduous rubber plantations through integration of PALSAR and multi-temporal Landsat imagery. Dong, Jinwei,Xiao, Xiangming,Jin, Cui,Biradar, Chandrashekhar,Dong, Jinwei,Xiao, Xiangming,Jin, Cui,Biradar, Chandrashekhar,Chen, Bangqian,Torbick, Nathan,Zhang, Geli.

[18]NDVI, Temperature and Precipitation Variables and Their Relationships in Hainan Island from 2001 to 2014 Based on MODIS NDVI. Luo, Hongxia,Wang, Lingling,Fang, Jihua,Li, Yuping,Li, Hailiang,Dai, Shengpei. 2016

[19]Estimation of rubber stand age in typhoon and chilling injury afflicted area with Landsat TM data: A case study in Hainan Island, China. Chen, Bangqian,Wang, Jikun,Wu, Zhixiang,Tao, Zhongliang,Chen, Junmin,Yang, Chuan,Xie, Guishui,Chen, Bangqian,Wang, Jikun,Wu, Zhixiang,Tao, Zhongliang,Chen, Junmin,Yang, Chuan,Xie, Guishui,Cao, Jianhua. 2012

[20]Spatio-Temporal Changes of Vegetation Based on MODIS NDVI Data during 2001-2014 in Hainan, China. Luo, Hongxia,Wang, Lingling,Fang, Jihua,Li, Yuping,Li, Hailiang,Li, Maofen. 2015

作者其他论文 更多>>

微信小程序