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太行山区中段旱季土壤含水量的影响因素

付同刚 高玥 刘丽丽 高会 齐菲 王丰 刘金铜

付同刚, 高玥, 刘丽丽, 高会, 齐菲, 王丰, 刘金铜. 太行山区中段旱季土壤含水量的影响因素[J]. 中国生态农业学报(中英文), 2022, 30(7): 1054−1063 doi: 10.12357/cjea.20210793
引用本文: 付同刚, 高玥, 刘丽丽, 高会, 齐菲, 王丰, 刘金铜. 太行山区中段旱季土壤含水量的影响因素[J]. 中国生态农业学报(中英文), 2022, 30(7): 1054−1063 doi: 10.12357/cjea.20210793
FU T G, GAO Y, LIU L L, GAO H, QI F, WANG F, LIU J T. Factors influencing soil water content during dry period in the middle part of the Taihang Mountain[J]. Chinese Journal of Eco-Agriculture, 2022, 30(7): 1054−1063 doi: 10.12357/cjea.20210793
Citation: FU T G, GAO Y, LIU L L, GAO H, QI F, WANG F, LIU J T. Factors influencing soil water content during dry period in the middle part of the Taihang Mountain[J]. Chinese Journal of Eco-Agriculture, 2022, 30(7): 1054−1063 doi: 10.12357/cjea.20210793

太行山区中段旱季土壤含水量的影响因素

doi: 10.12357/cjea.20210793
基金项目: 国家自然科学基金项目(41807013, 41930651)资助
详细信息
    作者简介:

    付同刚, 主要从事脆弱生态系统水土过程研究, E-mail: tgfu@sjziam.ac.cn

    高玥, 主要从事生态廊道景观格局研究, E-mail: gao1007yue@163.com

    通讯作者:

    刘金铜, 主要从事生态工程方面研究。E-mail: jtliu@sjziam.ac.cn

  • 中图分类号: S152.6

Factors influencing soil water content during dry period in the middle part of the Taihang Mountain

Funds: The study was supported by the National Natural Science Foundation of China (41807013, 41930651).
More Information
  • 摘要: 太行山脉为我国第二、第三阶梯的重要分界线, 海拔自西向东迅速降低, 在这种自然条件复杂的地理空间过渡带内, 土壤含水量(SWC)空间格局特征及其影响因素亦复杂而不明确, 限制了对山区土壤水文过程的认知。本研究通过在太行山区中段设置间距约85 km的两条样线(长度分别为140 km和164 km), 在旱季采集土壤样品, 测定SWC、容重、毛管孔隙度、非毛管孔隙度、有机碳含量、机械组成等理化性质, 详细调查样点的地形条件(坡度、坡向、海拔等)和植被条件(植被类型、枯落物情况等), 利用经典统计和地统计的方法, 并结合结构方程模型, 分析了表层(0~10 cm)和次表层(10~20 cm) SWC在海拔梯度上的变异特征, 探讨了其主要影响因素。结果表明, 太行山区中段两条样线均表现为表层SWC显著小于次表层, 两条样线之间没有显著差异。地统计分析表明, 表层和次表层SWC分别适用线性模型和指数模型模拟, 说明表层SWC影响因素更加复杂, 随机因素占主导地位; 次表层呈现出块基效应, 随机因素和结构因素共同起作用。两条样线次表层SWC块基比分别为48.01%和31.62%, 说明次表层SWC属中等程度的空间相关性。影响SWC的主要环境因子为海拔和降水量, 坡度、坡向及植被类型没有达到显著水平; 土壤性质中, 表层SWC主要受容重的影响, 次表层主要受毛管孔隙度和黏粒含量的影响。结构方程模型显示, 土壤性质是影响旱季SWC的直接因素, 环境因子是间接因素。环境因子对旱季SWC的影响超过80%是通过土壤性质产生的间接影响。以上结果有助于深入了解太行山区SWC特征, 为水-土过程的深入研究提供科学依据。
  • 图  1  太行山中段样线位置及采样点设置

    Figure  1.  Location of sampling points in the middle part of the Taihang Mountain

    图  2  太行山区中段不同层次土壤含水量(SWC)在北部样线(a)和南部样线(b)上的分布特征

    Figure  2.  Spatial distribution of soil water content (SWC) of different layers along the north transect (a) and south transect (b) in the middle part of the Taihang Mountain

    图  3  太行山中段不同层次土壤含水量影响因素的结构方程模型

    a: 0~10 cm; b: 10~20 cm。Evn.为环境因子, Soil为土壤性质, SWC为土壤含水量, P为年降雨量, E为海拔, BD为土壤容重, CP为毛管孔隙度, Clay为黏粒含量, E为误差项。

    Figure  3.  Structural equation modeling of soil water content of different layers in the middle part of the Taihang Mountain

    Evn. means the environmental factors, Soil means the soil properties, SWC means soil water content, P means annual precipitation, E means elevation, BD means bulk density, CP means capillary porosity, E means error.

    表  1  太行山中段两条样线不同层次土壤属性及环境因子数据分布特征

    Table  1.   Data distribution of soil properties of different layers and environmental factors in two line transects of the middle part of the Taihang Mountain

    类别
    Category
    性质
    Property
    数据分布特征及转换 Data distribution and transformation
    0~10 cm10~20 cm
    土壤属性 Soil property含水量 Soil water content正态分布 Normal distribution正态分布 Normal distribution
    容重 Bulk density正态分布 Normal distributionlog转换 Logarithmic transformation
    毛管孔隙度 Capillary porosity秩排序 Rank casesLngamma转换 Lngamma transformation
    非毛管孔隙度 Non-capillary porosity秩排序 Rank caseslog转换 Logarithmic transformation
    有机碳含量 Soil organic carbon平方根转换 Square root transformation正态分布 Normal distribution
    砂粒 Sand contentlog转换 Logarithmic transformationlog转换 Logarithmic transformation
    粉粒 Silt contentLngamma转换 Lngamma transformation秩排序 Rank cases
    黏粒 Clay content平方根转换 Square root transformation正态分布 Normal distribution
    自然因子 Natural factor年降水量 Annual precipitation正态分布 Normal distribution
    海拔 Elevation秩排序 Rank cases
    坡度 Slope gradientlog转换 Logarithmic transformation
    坡向 Slope aspect正态分布 Normal distribution
    NDVI正态分布 Normal distribution
    枯落物厚度 Litter thicknesslog转换 Logarithmic transformation
    下载: 导出CSV

    表  2  太行山中段两条样线不同层次土壤含水量描述性统计

    Table  2.   Describe statistic of soil water contents of different layers in two line transects of the middle part of the Taihang Mountain

    样线
    Line transect
    土层
    Soil layer (cm)
    样本数
    Sampling number
    平均值
    Mean (%)
    标准偏差
    Standard deviation (%)
    变异系数
    Coefficient of variation
    北样线
    North transect
    0~103517.56bA6.420.37
    10~203520.62aA5.840.28
    南样线
    South transect
    0~104116.06bA6.850.43
    10~204121.08aA7.030.33
      不同小写字母表示不同层次之间差异显著(P<0.05), 不同大写字母表示不同样线之间差异显著(P<0.05)。Different lowercase letters mean significant differences between two soil layers at P<0.05, different capital letters mean significant differences between two line transects.
    下载: 导出CSV

    表  3  太行山区中段不同样线不同层次土壤含水量地统计学特征

    Table  3.   Geostatistical characteristic of soil water contents of different layers in two line transects of the middle part of the Taihang Mountain

    样线
    Line transect
    土层
    Soil layer (cm)
    模型
    Model
    C0C0+CC0/(C0+C)
    (%)
    变程
    Range (km)
    R2
    北样线
    North transect
    0~10线性
    Linear
    42.4642.46100.0065.70.22
    10~20指数
    Exponential
    24.2150.4348.01145.50.47
    南样线
    South transect
    0~10线性
    Linear
    52.0860.4886.1180.20.24
    10~20指数
    Exponential
    21.0066.4231.62128.40.90
    下载: 导出CSV

    表  4  太行山区中段不同层次土壤属性对土壤含水量的回归分析

    Table  4.   Regression analysis of soil water content of different layers and other soil properties in the middle part of the Taihang Mountain

    土层
    Soil layer (cm)
    模型变量
    Independent variable
    R2调整后R2
    Adjusted R2
    标准估算的错误
    Estimated standard error
    0~10容重 Bulk density0.4070.3565.34
    10~20 毛管孔隙度 Capillary porosity0.5650.5604.45
    黏粒含量 Clay content0.5960.5854.32
    下载: 导出CSV

    表  5  太行山区中段不同层次土壤含水量与地形因素的相关性分析

    Table  5.   Correlation analysis between soil water contents of different layers and geographical factors in the middle part of the Taihang Mountain

    土层
    Soil layer (cm)
    参数
    Parameter
    年降水量
    Annual precipitation
    海拔
    Elevation
    坡度
    Slope gradient
    坡向
    Slope aspect
    NDVI枯落物厚度
    Litter thickness
    0~10相关系数 Correlation coefficient (R)0.306**0.282*–0.045–0.2010.0180.037
    P0.0070.0140.6980.0820.8760.750
    样本数 Samples number767676767676
    10~20 相关系数 Correlation coefficient (R)0.310**0.306**–0.125–0.2050.1370.151
    P0.0060.0070.2820.0750.2380.194
    样本数 Samples number767676767676
    下载: 导出CSV

    表  6  太行山中段不同层次土壤含水量在不同地形部位和不同土地利用类型的方差分析

    Table  6.   Variance analysis of soil water contents of different layers at different topographical locations and land use types in the middle part of the Taihang Mountain

    土层
    Soil layer (cm)

    Source
    平方和
    Sum of squares
    自由度
    Degree
    均方
    Root mean square
    F显著性
    Significant value
    0~10校正模型
    Corrected model
    364.4681133.130.720.72
    截距
    Intercept
    21 322.11121 322.11461.400
    地形部位
    Topographical location
    203.49367.831.470.23
    土地利用
    Land use
    31.65215.830.340.71
    地形部位×土地利用
    Topographical location×land use
    129.31621.550.470.83
    10~20校正模型
    Corrected model
    758.851168.991.690.10
    截距
    Intercept
    26 603.80126 603.80650.160
    地形部位
    Topographical location
    289.61396.542.360.08
    土地利用
    Land use
    121.62260.811.490.23
    地形部位×土地利用
    Topographical location×land use
    347.62657.941.420.22
    下载: 导出CSV

    表  7  太行山中段不同层次土壤性质和环境因子对土壤含水量的直接影响和间接影响

    Table  7.   Direct and indirect effects of soil properties and environmental factors on soil water contents of different layers in the middle part of the Taihang Mountain

    土层
    Soil layer (cm)
    环境因子 Environmental factor土壤因子 Soil factor
    直接
    Direct effect
    百分比
    Percentage (%)
    间接
    Indirect effect
    百分比
    Percentage (%)
    环境因子总效应
    Total effect
    直接
    Direct effect
    间接
    Indirect effect
    0~100.0318.750.1381.250.16−0.550
    10~20 0.0310.000.3090.000.33−0.790
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-11-16
  • 录用日期:  2022-03-04
  • 网络出版日期:  2022-03-28
  • 刊出日期:  2022-07-05

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