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基于InVEST模型的张承地区水源涵养功能时空变化特征

马靖宣 金晓媚 张绪财 殷秀兰 金爱芳

马靖宣,金晓媚,张绪财,等. 基于InVEST模型的张承地区水源涵养功能时空变化特征[J]. 水文地质工程地质,2023,50(3): 54-64 doi:  10.16030/j.cnki.issn.1000-3665.202208084
引用本文: 马靖宣,金晓媚,张绪财,等. 基于InVEST模型的张承地区水源涵养功能时空变化特征[J]. 水文地质工程地质,2023,50(3): 54-64 doi:  10.16030/j.cnki.issn.1000-3665.202208084
MA Jingxuan, JIN Xiaomei, ZHANG Xucai, et al. Spatio-temporal change characteristics of water conservation function in the Zhang-Cheng district based on the InVEST model[J]. Hydrogeology & Engineering Geology, 2023, 50(3): 54-64 doi:  10.16030/j.cnki.issn.1000-3665.202208084
Citation: MA Jingxuan, JIN Xiaomei, ZHANG Xucai, et al. Spatio-temporal change characteristics of water conservation function in the Zhang-Cheng district based on the InVEST model[J]. Hydrogeology & Engineering Geology, 2023, 50(3): 54-64 doi:  10.16030/j.cnki.issn.1000-3665.202208084

基于InVEST模型的张承地区水源涵养功能时空变化特征

doi: 10.16030/j.cnki.issn.1000-3665.202208084
基金项目: 国家自然科学基金项目(41372250);行政事业类专项项目(121201014000150003)
详细信息
    作者简介:

    马靖宣(1998-),男,硕士研究生,主要从事生态水文地质与水环境遥感等研究。E-mail:mjx_1998@163.com

    通讯作者:

    金晓媚(1968-),女,博士,教授,博士生导师,主要从事生态水文地质与水环境遥感等研究。E-mail:jinxm@cugb.edu.cn

  • 中图分类号: P641.8;P333

Spatio-temporal change characteristics of water conservation function in the Zhang-Cheng district based on the InVEST model

  • 摘要: 水源涵养作为重要的生态系统服务功能之一,对张家口和承德地区的生态系统及用水安全有着重要的意义。为了改进以往研究中对地形及土壤渗透性等考虑不足、对数据空间异质性分析不充分等问题,文章基于生态系统服务和权衡的综合评估模型(integrated valuation of ecosystem services and tradeoffs,InVEST),使用多种高精度的遥感、再分析数据等产品,对2001—2020年张承地区的水源涵养功能进行定量化评价及驱动因素分析。研究发现,2001—2020年张承地区水源涵养功能空间分布上呈现坝下高坝上低的特点,各年水源涵养功能的空间分布存在差异性的同时也具有一定的相似性。时间变化上,20年间水源涵养深度以−0.08 mm/a的平均速率呈下降波动趋势。结合Sen+Mann-Kendall分析发现区内水源涵养功能变化趋势以“基本不变”、“轻微增长”、“轻微降低”三者为主,总占比近98%。区内降水量对水源涵养功能具有很强的显著正相关关系,气温对水源涵养功能在部分地区具有显著负相关关系,植被与水源涵养功能的关系相对复杂。张承地区2020年林地的水源涵养功能最强,水源涵养深度达28.64 mm,总量而言,草地水源涵养功能的贡献最大,水源涵养量达1.12×109 m3。20年间变化中,耕地水源涵养量的降低最为明显,变化速率达−6.49×106 m3/a。上述结果说明张承地区20年间水源涵养功能的时空特征主要受到降水量与植被型土地利用的控制。研究为张承地区生态建设及水资源管理提供重要的决策依据。
  • 图  1  张承地区位置及2020年土地利用类型

    Figure  1.  Administrative division and land use in 2020 of the Zhang-Cheng district

    图  2  2001—2020年张承地区水源涵养功能空间分布

    Figure  2.  Spatial distribution of water conservation function in the Zhang-Cheng district from 2001 to 2020

    图  3  张承地区水源涵养功能年际变化趋势及Sen+Mann-Kendall变化分级

    Figure  3.  Interannual trends of water conservation function and Sen+Mann-Kendall classification of change in the Zhang-Cheng district

    图  4  张承地区水源涵养功能与降水量、气温及NDVI的相关性空间分布

    Figure  4.  Spatial distribution of correlations between water conservation function and precipitation, temperature and NDVI in the Zhang-Cheng district

    图  5  张承地区2020年不同土地利用的水源涵养深度

    Figure  5.  Water conservation depth for different land uses in the Zhang-Cheng district in 2020

    表  1  参数栅格数据信息

    Table  1.   Raster data information

    参数栅格数据数据来源原始空间
    分辨率/m
    原始时间
    分辨率
    降水量ERA5-Land再分析产品[32]11132
    气温ERA5-Land再分析产品[32]11132
    土壤厚度ISRIC数据产品[33]250静态数据
    植物可利用水分容量ISRIC数据产品[33]250静态数据
    土壤饱和导水率Zhang等[34]1000静态数据
    参考蒸散量MOD16A2产品5008 d
    土地利用类型MCD12Q1产品500
    NDVIMOD13A1产品50016 d
    地表高程SRTM DEM产品90静态数据
    下载: 导出CSV

    表  2  各土地利用类型参数

    Table  2.   Parameters for each land use

    土地利用一级分类土地利用类型最大根系深度/mm蒸散系数流速系数
    林地常绿针叶林7 0001.00200
    落叶针叶林3 1001.00200
    落叶阔叶林3 1001.00180
    针阔混交林4 8001.00200
    灌木丛2 0000.90249
    草地多树草原2 6000.85300
    稀树草原2 3000.75400
    草地2 0000.75500
    耕地农田1 5000.80400
    水域湿地1 0001.202 012
    水体11.002 012
    城建用地城建用地10.252 012
    未利用土地未利用土地2000.301 500
    下载: 导出CSV

    表  3  张承地区水源涵养功能变化趋势分级统计

    Table  3.   Classification statistics on the trends of water conservation function in the Zhang-Cheng district

    Sen's slopeZ变化趋势分级面积占比/%平均变化趋势/(mm·a−1
    β >0.1|Z | >1.96显著增长1.110.70
    β >0.1|Z | ≤1.96轻微增长32.880.30
    |β |≤0.1基本不变35.100.01
    β <−0.1|Z | ≤1.96轻微降低29.87−0.54
    β <−0.1|Z | >1.96显著降低1.04−1.25
    下载: 导出CSV

    表  4  张承地区水源涵养功能驱动因素相关性分级面积占比

    Table  4.   Classification area proportion of correlations between water conservation function and driving factors in the Zhang-Cheng district /%

    驱动因素正相关(r>0)相关性不显著 (p≥0.05)
    或不相关(r=0)
    负相关(r<0)
    极显著正相关(p≤0.01)显著正相关(0.01<p<0.05)显著负相关(0.01<p<0.05)极显著负相关(p≤0.01)
    降水99.760.080.160.000.00
    气温0.000.0042.9531.1225.92
    NDVI0.593.8295.470.110.01
    下载: 导出CSV

    表  5  张承地区不同土地利用的水源涵养功能及其变化

    Table  5.   Water conservation functions and changes in different land uses in the Zhang-Cheng district

    土地利用2020年水源涵养功能2001—2020年变化
    平均水源涵养深度/mm水源涵养量/(106 m3面积/km2水源涵养量/(106 m3水源涵养量回归趋势/(106 m3·a−1
    林地28.64199.092 266.68−43.111.80
    草地19.491 119.97−1 296.32416.76−1.53
    耕地25.16280.20−1 056.87−85.42−6.49
    水域0.000.0018.210.000.00
    城建用地8.975.3485.373.230.08
    未利用土地1.450.05−17.070.030.00
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-08-17
  • 修回日期:  2022-09-16
  • 网络出版日期:  2023-05-16
  • 刊出日期:  2023-05-15

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