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天津滨海土壤盐分离子相关性及采样密度研究

李攻科, 王卫星, 曹淑萍, 程绪江, 刘永涛, 张亚娜

李攻科, 王卫星, 曹淑萍, 程绪江, 刘永涛, 张亚娜. 天津滨海土壤盐分离子相关性及采样密度研究[J]. 中国地质, 2016, 43(2): 662-670.
引用本文: 李攻科, 王卫星, 曹淑萍, 程绪江, 刘永涛, 张亚娜. 天津滨海土壤盐分离子相关性及采样密度研究[J]. 中国地质, 2016, 43(2): 662-670.
LI Gong-ke, WANGWei-xing, CAO Shu-ping, CHENG Xu-jiang, LIU Yong-tao, ZHANG Ya-na. Correlation of soil salt ions and sampling densities in Tianjin coastal area[J]. GEOLOGY IN CHINA, 2016, 43(2): 662-670.
Citation: LI Gong-ke, WANGWei-xing, CAO Shu-ping, CHENG Xu-jiang, LIU Yong-tao, ZHANG Ya-na. Correlation of soil salt ions and sampling densities in Tianjin coastal area[J]. GEOLOGY IN CHINA, 2016, 43(2): 662-670.

天津滨海土壤盐分离子相关性及采样密度研究

基金项目: 

中国地质调查局地质大调查项目(12120113002000)资助.

详细信息
    作者简介:

    李攻科,男,1982年生,工程师,主要从事应用地球化学和水文地质方面研究;E-mail:81586678@qq.com.

  • 中图分类号: X142;S151.9

Correlation of soil salt ions and sampling densities in Tianjin coastal area

Funds: 

Supported by China Geological Survey Program (No. 12120113002000).

  • 摘要: 土壤盐渍化是一个世界性的生态问题。天津滨海地区土壤长期遭受海水及高矿化潜水共同作用,土壤盐渍化现象分布广泛。本文选取天津滨海新区太平镇作为典型地区,研究了土壤主要盐分离子的相关性,另外对工作区采样点进行了随机均匀抽稀试验,探讨了不同采样密度对土壤盐渍化插值结果和评价结果的影响。研究表明:天津滨海地区土壤易溶盐中Na+、Cl-所占比例具有绝对优势;土壤中全Cl、Cl-与全盐量具有非常好的相关性,随机均匀抽取少量样本加测全盐量,建立全Cl与全盐量的相关方程可以比较准确地推算出所有样本的全盐量;大密度采样有利于提高样本的代表性,若要满足相对误差合格率≥80%的要求,采样密度不应低于4点/km2,另外用于评价盐渍化等级的采样密度不宜低于1点/km2
    Abstract: Soil salinization is a worldwide ecological problem. In Tianjin coastal area, soil has long suffered from sea water and high mineralization diving, so salinization is widely distributed. Choosing Taiping Town of Tianjin coastal area as a typical soil salinization coastal area, the authors determined the correlation between main salt ions in the soil, carried out the random uniform thinning test for sampling points in the study area, and discussed the influence of different sampling densities on the interpolation results and the evaluation results of soil salinization. The results show that the farmland soil in Tianjin coastal area has mainly anions of Cl-, and cations of Na+, and that the total Cl and Cl- have good correlation with total salt in the soil. The authors extracted randomly a small number of samples to test total salt, and established an equation of total Cl and total salt, which could accurately calculate the total salt values for the whole samples. High-density sampling can improve the representation of the samples: when the sampling density is more than 4 points per square kilometers, the acceptance rate of the relative error is equal or greater than 80%; in addition, sampling density of evaluating salinization levels should not be less than 1 points per square kilometers.
  • 图    研究区位置图

    图1

    Figure    Location of the study area

    Fig.1

    图    盐分离子频数分布图

    图2

    Figure    Frequency distribution of salt ions

    Fig.2

    图    聚类分析龙骨图

    图3

    Figure    Dendogram of clustering analysis

    Fig.3

    图    土壤全Cl与易溶盐Cl-含量散点图

    图4

    Figure    The content scatter diagram of soil total Cl and soluble salt Cl-

    Fig.4

    图    抽稀试验中土壤全Cl与全盐量含量的散点图

    图5

    Figure    The content scatter diagram of soil total Cl and total salt content in thinning test

    Fig.5

    图    不同采样密度RE分散度统计

    图6

    Figure    Statistics of RE dispersions in different sampling densities

    Fig.6

    图    不同采样密度RE合格率变化图

    图7

    Figure    The chart of RE acceptance rate in different sampling densities

    Fig.7

    图    各采样密度下样点分布及盐渍化评价图

    图8

    Figure    The chart of sample distribution and salinization evaluation in different sampling densities

    Fig.8

    研究区土壤全Cl和易溶盐特征

    Soil total Cl and soluble salt content characteristics of the study area

    下载: 导出CSV

    不同采样密度全盐量变异系数统计

    Statistics of variation coefficients of total salinities in different sampling densities

    下载: 导出CSV

    不同插值方法插值精度比较

    Comparison of interpolation precisions of different interpolation methods

    下载: 导出CSV

    土壤盐渍化分级标准及评价

    The classification standard and evaluation results of soil salinization

    下载: 导出CSV

    不同采样密度各盐渍化等级面积的相对误差

    The relative errors of the salinization level area in different sampling densities

    下载: 导出CSV
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出版历程
  • 收稿日期:  2015-04-02
  • 修回日期:  2015-05-11
  • 网络出版日期:  2023-09-26
  • 刊出日期:  2016-04-24

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