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冀北木兰围场沙荒坡地不同坡位黄柳沙障内枯落物的持水性能

王安宁 蔺鑫 穆枫 李玉灵 李晓红

王安宁, 蔺鑫, 穆枫, 李玉灵, 李晓红. 冀北木兰围场沙荒坡地不同坡位黄柳沙障内枯落物的持水性能[J]. 北京林业大学学报, 2018, 40(1): 98-107. doi: 10.13332/j.1000-1522.20170233
引用本文: 王安宁, 蔺鑫, 穆枫, 李玉灵, 李晓红. 冀北木兰围场沙荒坡地不同坡位黄柳沙障内枯落物的持水性能[J]. 北京林业大学学报, 2018, 40(1): 98-107. doi: 10.13332/j.1000-1522.20170233
Wang An-ning, Lin Xin, Mu Feng, Li Yu-ling, Li Xiao-hong. Water holding capacity of litter at different slope positions of sand slope in Salix gordejevii sand barrier of Mulan Paddock of northern Hebei Province, northern China[J]. Journal of Beijing Forestry University, 2018, 40(1): 98-107. doi: 10.13332/j.1000-1522.20170233
Citation: Wang An-ning, Lin Xin, Mu Feng, Li Yu-ling, Li Xiao-hong. Water holding capacity of litter at different slope positions of sand slope in Salix gordejevii sand barrier of Mulan Paddock of northern Hebei Province, northern China[J]. Journal of Beijing Forestry University, 2018, 40(1): 98-107. doi: 10.13332/j.1000-1522.20170233

冀北木兰围场沙荒坡地不同坡位黄柳沙障内枯落物的持水性能

doi: 10.13332/j.1000-1522.20170233
基金项目: 

国家重点研发计划项目 2016YFC0500806-07

河北省高层次人才资助项目 132014010004

详细信息
    作者简介:

    王安宁。主要研究方向:水土保持与植被恢复。Email:wanganning040027@163.com 地址:071000 河北省保定市河北农业大学林学院

    责任作者:

    李玉灵,教授,博士生导师。主要研究方向:退化土地植被恢复理论与技术。Email:liyuling0425@126.com 地址:同上

  • 中图分类号: S714.7

Water holding capacity of litter at different slope positions of sand slope in Salix gordejevii sand barrier of Mulan Paddock of northern Hebei Province, northern China

  • 摘要: 目的研究不同坡位黄柳沙障内枯落物持水性能的差异,为沙漠化土地植被恢复技术研究提供技术依据。方法通过野外采样、室内测定的方法对冀北沙荒地3个坡位(坡顶、坡中、坡底)黄柳沙障内枯落物的蓄积量、持水、吸水和拦蓄能力相关指标进行测定分析。结果(1) 不同坡位枯落物蓄积量、自然含水率差异不明显(P>0.05),但不同坡位持水、拦蓄能力相关指标均表现为坡中>坡底>坡顶,且坡顶显著小于坡中和坡底(P < 0.05),枯落物持水性能综合指数也是坡顶最小。坡底吸水率显著高于坡中和坡顶(P < 0.01)。(2)不同坡位枯落物持水、吸水随时间变化趋势相同。枯落物持水率和吸水速率与浸水时间分别满足对数函数和指数函数关系。(3)通过主成分分析确定枯落物持水性能由持蓄水能力和吸水能力两大要素构成,权重分别为0.85和0.15,持蓄水相关指标代表性更强。结论枯落物持水、拦蓄能力是衡量枯落物水源涵养性能的首要因素,其中持水率、最大持水率、最大拦蓄率、有效拦蓄率和蓄积量足以代表枯落物的持蓄水能力。而这几项指标及其枯落物持水性能综合指数均以坡中为最大。坡中是坡面承上启下的关键部位,当地黄柳生物沙障发挥了良好的生态水文作用。

     

  • 图  1  各样地布设剖面图

    Figure  1.  Survey section showing position of different slopes

    图  2  不同时间段各坡位黄柳沙障内枯落物持水率变化

    Figure  2.  Changes of water holding capacity of litter in different slope positions with Salix gordejevii sand at different time

    图  3  各坡位黄柳沙障内枯落物持水能力

    不同字母表示坡位间差异显著(P < 0.05)。下同。

    Figure  3.  Litter maximum water holding capacity of Salix gordejevii sand barrier in different slope positions

    Different letters indicate significant differences among slope positions (P < 0.05). The same below.

    图  4  各坡位黄柳沙障地内枯落物吸水速率变化

    Figure  4.  Changes of water absorption speed with time in different slope positions with Salix gordejevii sand barrier

    图  5  各坡位黄柳沙障地内枯落物拦蓄能力

    Figure  5.  Water interception capacity of litter in different slope positions with Salix gordejevii sand barrier

    表  1  各坡位黄柳沙障样地概况

    Table  1.   A survey of sample land of Salix gordejevii sand barrier at different slope positions

    坡位
    Slope
    position
    坡度
    Gradient/
    (°)
    海拔
    Altitude/
    m
    灌丛盖度
    Shrub
    coverage/%
    灌丛高度
    Shrub
    height/m
    积沙量
    Accumulated
    volume/m3
    主要植物种类
    Major vegetation type
    坡顶
    Top slope
    111 0660.131.930.18盐蒿Artemisia halodendron
    鸡眼草Kummerowia striata
    盐地扶Rhus chinensis
    坡中
    Middle slope
    101 0480.432.000.09多花胡枝子Lespedeza floribunda
    金毛狗尾草Setaria glauca
    花苜蓿Medicago ruthenica
    坡底
    Bottom slope
    01 0300.541.720.09冷蒿(丛)Artemisia frigida
    多花胡枝子Lespedeza floribunda
    花苜蓿Medicago ruthenica
    下载: 导出CSV

    表  2  不同坡位黄柳沙障内枯落物蓄积量及自然含水率

    Table  2.   Litter volume and natural moisture content in different slope positions with Salix gordejevii sand barrier

    坡位
    Slope position
    蓄积量/(t·hm-2)
    Volume/(t·ha-1)
    自然含水率
    Natural moisture rate/%
    鲜质量
    Wet mass/g
    干质量
    Dry mass/g
    坡顶Top slope1.75±0.837.95±0.0022.13±1.8820.37±1.71
    坡中Middle slope3.15±1.187.97±0.0121.574±1.4719.86±1.37
    坡底Bottom slope2.97±0.737.84±0.0224.808±2.2422.86±2.06
    下载: 导出CSV

    表  3  各坡位黄柳沙障地内枯落物持水率、吸水速率与浸水时间的回归方程

    Table  3.   Regression equations of litter holding rate, water absorption with immersion time in different slope positions with Salix gordejevii sand barrier

    坡位
    Slope position
    持水率与浸水时间关系Relationship between
    water holding ratio and immersion time
    吸水速率与浸水时间关系Relationship between
    water absorption rate and immersion time
    方程Regression equation相关系数
    Correlation coefficient
    方程Regression equation相关系数
    Correlation coefficient
    坡顶Top slopeWr=20.49lnt+124.420.99V=20.42lnt-0.861.00
    坡中Middle slopeWr=114.33lnt+106.760.98V=27.12lnt-0.880.99
    坡底Bottom slopeWr=14.99lnt+128.210.98V=22.95lnt-0.830.99
    注:Wr为枯落物持水率,V为吸水速率,t为浸水时间。Notes: Wr means litter holding rate, V means water absorption, t means immersion time.
    下载: 导出CSV

    表  4  各坡位黄柳沙障内枯落物蓄积量与持水性能指标相关性分析

    Table  4.   Analysis on correlation between litter volume and water holding performance index of Salix gordejevii sand barrier at varied slope positions

    最大持水率
    Maximum
    water
    holding rate
    最大持水量
    Maximum
    water holding
    amount
    最大拦蓄量
    Maximum
    interception
    amount
    最大拦蓄率
    Maximum
    interception
    rate
    有效拦蓄量
    Effective
    interception
    amount
    有效拦蓄率
    Effective
    interception
    rate
    自然含水率
    Natural
    moisture
    content
    蓄积量
    Volume
    最大持水率
    Maximum water holding rate
    10.58*0.59*1.00**0.59*1.00**-0.260.40
    最大持水量
    Maximum water holding amount
    11.00**0.58*1.00**0.58*0.030.98**
    最大拦蓄量
    Maximum interception amount
    10.58*1.00**0.58*0.020.97**
    最大拦蓄率
    Maximum interception rate
    10.59*1.00**-0.270.40
    有效拦蓄量
    Effective interception amount
    10.58*0.020.97**
    有效拦蓄率
    Effective interception rate
    1-0.270.40
    自然含水率
    Natural moisture content
    10.05
    蓄积量
    Volume
    1
    注:*表示在0.05水平(双侧)上显著相关,**表示在0.01水平(双侧)上显著相关。Notes:* indicates a significant correlation at P < 0.05 level (bilateral), ** indicates a significant correlation at P < 0.01 level (bilateral).
    下载: 导出CSV

    表  5  旋转成分矩阵

    Table  5.   Rotation composition matrix

    变量Variable主成分
    Principal component
    12
    自然含水率Natural moisture content(x1)-0.01-1.00
    最大持水率Maximum water holding rate(x2)0.980.19
    最大拦蓄率Maximum interception rate(x3)0.980.20
    有效拦蓄率Effective interception rate(x4)0.980.20
    蓄积量Volume(x5)0.970.25
    最大持水量Maximum water holding amount(x6)0.970.25
    最大拦蓄量Maximum interception amount(x7)0.980.26
    有效拦蓄量Effective interception amount(x8)0.970.26
    持水率Water holding rate(x9)1.00-0.02
    吸水速率Water absorption rate(x10)0.480.88
    注:提取方法为主成分,旋转法采用具有Kaiser标准化的正交旋转法。下同。Notes: extraction method, principal component; rotation method, orthogonal rotation method with Kaiser standardization. The same below.
    下载: 导出CSV

    表  6  旋转成分得分系数矩阵

    Table  6.   Rotation component score coefficient matrix

    变量Variable主成分Principal component
    12
    x10.15-0.60
    x20.13-0.03
    x30.13-0.03
    x40.13-0.03
    x50.120.01
    x60.120.01
    x70.120.01
    x80.120.01
    x90.17-0.17
    x10-0.050.46
    下载: 导出CSV

    表  7  枯落物持水性能综合得分

    Table  7.   Comprehensive score of litter water holding capacity

    坡位
    Slope position
    主成分Principal component综合得分
    Comprehensive
    score
    F1F2
    坡顶Top slope-1.08-0.40-0.98
    坡中Middle slope0.90-0.730.65
    坡底Bottom slope0.181.140.33
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-07-03
  • 修回日期:  2017-11-10
  • 刊出日期:  2018-01-01

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