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新疆荒漠植被的时空分布变化及其驱动因素

崔灿 郭英 沈彦俊

崔灿, 郭英, 沈彦俊. 新疆荒漠植被的时空分布变化及其驱动因素[J]. 中国生态农业学报(中英文), 2021, 29(10): 1−11 doi: 10.13930/j.cnki.cjea.210121
引用本文: 崔灿, 郭英, 沈彦俊. 新疆荒漠植被的时空分布变化及其驱动因素[J]. 中国生态农业学报(中英文), 2021, 29(10): 1−11 doi: 10.13930/j.cnki.cjea.210121
CUI C, GUO Y, SHEN Y J. Spatio-temporal variation in and the driving factors of desert vegetation in Xinjiang[J]. Chinese Journal of Eco-Agriculture, 2021, 29(10): 1−11 doi: 10.13930/j.cnki.cjea.210121
Citation: CUI C, GUO Y, SHEN Y J. Spatio-temporal variation in and the driving factors of desert vegetation in Xinjiang[J]. Chinese Journal of Eco-Agriculture, 2021, 29(10): 1−11 doi: 10.13930/j.cnki.cjea.210121

新疆荒漠植被的时空分布变化及其驱动因素

doi: 10.13930/j.cnki.cjea.210121
基金项目: 中国科学院院长特别专项项目专题“新疆绿洲农业高效用水路径研究”和中国科学院国际伙伴计划“一带一路”专项项目(153E13KYSB20170010)资助
详细信息
    作者简介:

    崔灿, 研究方向为环境遥感。E-mail: 631375345@qq.com

    通讯作者:

    郭英, 主要研究方向为水文与水资源模拟、陆面过程模拟及环境遥感等, E-mail: guoy@sjziam.ac.cn

    沈彦俊, 主要从事农业水文与水资源研究, E-mail: yj.shen@gmail.com

  • 中图分类号: TP79

Spatio-temporal variation in and the driving factors of desert vegetation in Xinjiang

Funds: The study was supported by the Special Project of the President of the Chinese Academy of Sciences “Study on the Path of Efficient Water Use in Xinjiang Oasis Agriculture”, and the One Belt One Road Special Project of the International Partnership Program of the Chinese Academy of Sciences (153E13KYSB20170010)
More Information
  • 摘要: 荒漠植被是干旱半干旱生态系统重要的组成部分, 在维护生态系统平衡方面发挥着重要的作用。及时准确地监测新疆荒漠植被的时空分布变化, 对资源可持续利用及生态恢复具有重要应用价值。本研究基于AVHRR-NDVI和MOD13A2-NDVI数据集计算了新疆1989—2017年植被覆盖度, 通过对植被覆盖度划分阈值提取计算了荒漠植被的分布和面积, 分析了其时空变化特征。通过土地利用转移矩阵计算新疆荒漠植被与非荒漠植被、裸地类型的转化情况。利用相关系数分析法定量分析了乌伦古河、叶尔羌河及阿克苏河3个典型流域影响荒漠植被演变的驱动因素。结果表明: 1989—2017年, 新疆荒漠植被总面积呈显著增加趋势, 线性增长率为3.09万hm2∙a−1。低覆盖度荒漠植被面积呈显著增加趋势, 线性增长率为3.22万hm2∙a−1; 高覆盖度荒漠植被面积基本不变。植被转化中, 高、低荒漠植被间转化面积50.85万hm2, 非荒漠植被类型转变为荒漠植被341.24万hm2, 荒漠植被转变为非荒漠植被类型191.25万hm2。通过对典型流域的研究分析得出降水是影响荒漠植被演变最主要的因素, 其次是径流量和政策因素, 气温对于荒漠植被的影响存在区域性差异。
  • 图  1  研究区地理位置及站点分布

    Figure  1.  Geographical position and distributions of meteorological sites in the study region

    图  2  1989—2017年新疆(a)及南疆(b)、北疆(c)荒漠植被面积的变化

    Figure  2.  Changes in desert vegetation areas in Xinjiang (a), and South (b) and North (c) Xinjiang from 1989 to 2017

    图  3  1989年、2000年、2010年和2017年新疆荒漠植被空间分布图

    Figure  3.  Spatial distribution maps of desert vegetation in Xinjiang in 1989, 2000, 2010 and 2017

    图  4  1989—2017年新疆植被类型的演变转化空间分布图

    Figure  4.  Spatial distribution map of vegetation type evolution and transformation in Xinjiang from 1989 to 2017

    图  5  1989—2017年阿克苏河流域、叶尔羌河流域、乌伦古河流域荒漠植被面积

    Figure  5.  Desert vegetation areas of Aksu River Basin, Yarkand River Basin and Ulungur River Basin from 1989 to 2017

    图  6  阿克苏河流域、叶尔羌河流域、乌伦古河流域植被覆盖度与气温(a)和降水量(b)的相关系数的空间分布特征

    Figure  6.  Spatial distribution of coefficients of correlation between vegetation coverage and air temperature (a), precipitation (b) in Aksu River Basin, Yarkand River Basin and Ulungur River Basin

    图  7  1989—2017年阿克苏河流域、叶尔羌河流域及乌伦古河流域径流量

    Figure  7.  Runoff changes of Aksu River Basin, Yarkand River Basin and Ulungur River Basin from 1989 to 2017

    表  1  1989—2017年新疆不同植被类型间转化情况

    Table  1.   Conversion among different vegetation types in Xinjiang from 1989 to 2017 104 hm2  

    转化类型 Conversion type面积 Area 转化类型 Conversion type面积 Area
    非荒漠植被不变
    Unchanged non-desert vegetation
    1372.10 高覆盖度荒漠植被→非荒漠植被
    High-coverage desert vegetation to non-desert vegetation
    58.97
    非荒漠植被→裸地
    Non-desert vegetation to barren land
    40.11 高覆盖度荒漠植被不变
    Unchanged high-coverage desert vegetation
    90.16
    非荒漠植被→低覆盖度荒漠植被
    Non-desert vegetation to low-coverage desert vegetation
    24.02 高覆盖度荒漠植被→低覆盖度荒漠植被
    High-coverage desert vegetation to low-coverage desert vegetation
    24.90
    非荒漠植被→高覆盖度荒漠植被
    Non-desert vegetation to high-coverage desert vegetation
    66.86 高覆盖度荒漠植被→裸地
    High-coverage desert vegetation to barren land
    54.76
    低覆盖度荒漠植被→非荒漠植被
    Low-coverage desert vegetation to non-desert vegetation
    36.11 裸地-低覆盖度荒漠植被
    Barren land to low-coverage desert vegetation
    210.25
    低覆盖度荒漠植被不变
    Unchanged low-coverage desert vegetation
    242.84 裸地不变
    Unchanged barren land
    8167.30
    低覆盖度荒漠植被→裸地
    Low-coverage desert vegetation to barren land
    41.41 裸地→高覆盖度荒漠植被
    Barren land to high-coverage desert vegetation
    40.11
    低覆盖度荒漠→高覆盖度荒漠植被
    Low-coverage desert vegetation to high-coverage desert vegetation
    25.95 裸地→非荒漠植被
    Barren land to non-desert vegetation
    111.27
    下载: 导出CSV
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    MA Y X. The relationship between vegetation index and climate factors in arid and semi-arid[D]. Lanzhou: Lanzhou University, 2016
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出版历程
  • 收稿日期:  2021-03-05
  • 录用日期:  2021-06-02
  • 网络出版日期:  2021-08-19

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