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太行山区植被NPP时空变化特征及其驱动力分析

李晓荣 高会 韩立朴 刘金铜

李晓荣, 高会, 韩立朴, 刘金铜. 太行山区植被NPP时空变化特征及其驱动力分析[J]. 中国生态农业学报(中英文), 2017, 25(4): 498-508. doi: 10.13930/j.cnki.cjea.160780
引用本文: 李晓荣, 高会, 韩立朴, 刘金铜. 太行山区植被NPP时空变化特征及其驱动力分析[J]. 中国生态农业学报(中英文), 2017, 25(4): 498-508. doi: 10.13930/j.cnki.cjea.160780
LI Xiaorong, GAO Hui, HAN Lipu, LIU Jintong. Spatio-temporal variations in vegetation NPP and the driving factors in Taihang Mountain Area[J]. Chinese Journal of Eco-Agriculture, 2017, 25(4): 498-508. doi: 10.13930/j.cnki.cjea.160780
Citation: LI Xiaorong, GAO Hui, HAN Lipu, LIU Jintong. Spatio-temporal variations in vegetation NPP and the driving factors in Taihang Mountain Area[J]. Chinese Journal of Eco-Agriculture, 2017, 25(4): 498-508. doi: 10.13930/j.cnki.cjea.160780

太行山区植被NPP时空变化特征及其驱动力分析

doi: 10.13930/j.cnki.cjea.160780
基金项目: 

国家重点基础研究发展计划(973计划)课题 2015CB452705

详细信息
    作者简介:

    李晓荣, 主要研究方向为山地生态系统。E-mail:lxrlvge@163.com

    通讯作者:

    刘金铜, 主要研究方向为生态系统可持续管理与生态工程。E-mail:jtliu@sjziam.ac.cn

  • 中图分类号: Q149

Spatio-temporal variations in vegetation NPP and the driving factors in Taihang Mountain Area

Funds: 

the National Program on Key Basic Research Project of China 2015CB452705

More Information
  • 摘要: 本文基于2000-2014年MODIS NPP数据,结合同期土地利用变化、气温、降水和DEM数据,运用趋势分析法、相关系数法及分区统计法等方法,研究了太行山区2000-2014年植被NPP时空变化特征,分析了气温、降水等气候因素和人为因素对植被NPP变化的影响,为太行山区植被资源管理及生态环境调控提供参考。研究结果表明:(1)太行山区植被NPP多年平均值为284.0 g(C)·m-2·a-1,耕地、林地和草地的NPP均值分别为302.5 g(C)·m-2·a-1、258.1 g(C)·m-2·a-1、286.5 g(C)·m-2·a-1。(2)2000-2014年太行山区植被NPP整体呈上升趋势,但大部分植被NPP变化未达到显著水平;16.17%的植被NPP显著或极显著升高,主要分布在太行山区西侧;0.88%的植被NPP显著或极显著降低,零散分布在研究区内。(3)不同植被类型NPP变化速率为草地>耕地>林地。(4)基于区域平均计算,太行山区植被NPP与降水显著正相关(P < 0.05),与气温负相关(P>0.05)。基于像元计算,植被NPP与降水显著或极显著正相关区面积比例为23.82%,主要分布在太行山区北段,几乎没有显著负相关区;植被NPP与气温显著或极显著负相关区面积比例为8.42%,主要分布在太行山区西侧,显著或极显著正相关区面积比例为0.81%,主要分布在太行山区最北端。(5)研究期内气候因子对植被NPP的升高整体上表现为促进作用,而人为因素主要表现为抑制作用。太行山区生态环境保护仍应以减少人为干扰为主。
  • 图  1  太行山区土地利用图

    Figure  1.  Land cover map of Taihang Mountain Area

    图  2  2000—2014年太行山区植被年均NPP空间分布

    Figure  2.  Spatial distribution of annual vegetation NPP in Taihang Mountain Area from 2000 to 2014

    图  3  2000—2014年太行山区全部植被 (a) 及不同植被类型 (b) 年均NPP变化趋势

    Figure  3.  Changes trend of average annual NPP of all vegetation (a) and different vegetation types (b) in Taihang Mountain Area from 2000 to 2014

    图  4  2000—2014年太行山区植被NPP变化速率 (a) 及其显著性 (b) 的空间分布

    Figure  4.  Spatial distribution of annual change rate of NPP (a) and its' significance test result (b) in Taihang Mountain Area from 2000 to 2014

    图  5  2000—2014年太行山区植被NPP与年降水量 (a) 和年均温 (b) 的偏相关系数的显著性检验结果

    A:极显著负相关; B:显著负相关; C:相关性不显著; D:显著正相关; E:极显著正相关。

    Figure  5.  Results of significance test of partial correlation coefficient between vegetation NPP and annual precipitation (a), vegetation NPP and average annual temperature (b) in Taihang Mountain Area from 2000 to 2014

    A: extremely significant negative correlation; B: significant negative correlation; C: not significant correlation; D: significant positive correlation; E: extremely significant positive correlation.

    图  6  2000—2014年太行山区不同植被类型NPP与年降水量 (a) 和年均温 (b) 的偏相关系数显著性检验结果面积百分比

    A:极显著负相关; B:显著负相关; C:相关性不显著; D:显著正相关; E:极显著正相关。

    Figure  6.  Area percentages of the results of significance test of partial correlation coefficient between vegetation NPP and annual precipitation (a), vegetation NPP and average annual temperature (b) in Taihang Mountain Area from 2000 to 2014

    A: extremely significant negative correlation; B: significant negative correlation; C: not significant; D: significant positive correlation; E: extremely significant positive correlation.

    图  7  海拔梯度和坡度梯度上不同植被类型的面积百分比 (a, b)、年均NPP (c, d)、NPP变化速率 (e, f)、NPP-降水偏相关系数 (g, h) 和NPP-气温偏相关系数 (i, j) 的分布

    Figure  7.  Distribution of area percentage (a, b), average annual NPP (c, d), NPP change rate (e, f), NPP-precipitation partial correlation coefficient (g, h), and NPP-temperature partial correlation coefficient (i, j) of different vegetation types along altitude gradient and slope gradient

    表  1  2000—2014年太行山区不同植被类型NPP变化显著性检验结果面积百分比

    Table  1.   Area percentages of the results of significance test of NPP changes of different vegetation types in Taihang Mountain Area from 2000 to 2014

    %
    植被类型
    Vegetation type
    变化不显著
    Not
    significant change
    显著降低
    Significantly
    reducing
    显著升高
    Significantly
    increasing
    极显著降低
    Extremely
    significantly reducing
    极显著升高
    Extremely
    significantly increasing
    耕地 Farmland 78.76 0.46 12.13 0.16 8.50
    林地 Forest 91.36 0.87 5.47 0.09 2.22
    草地 Grassland 78.50 0.16 12.65 0.03 8.66
    全部植被 All vegetation 82.95 0.65 9.85 0.23 6.32
    下载: 导出CSV
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