黄土沟壑区采煤塌陷地不同土地利用类型土壤性质损害特征

拜梦童, 杜华栋, 范鹏辉, 曹祎晨

拜梦童, 杜华栋, 范鹏辉, 曹祎晨. 黄土沟壑区采煤塌陷地不同土地利用类型土壤性质损害特征[J]. 土壤通报, 2022, 53(5): 1029 − 1037. DOI: 10.19336/j.cnki.trtb.2021111803
引用本文: 拜梦童, 杜华栋, 范鹏辉, 曹祎晨. 黄土沟壑区采煤塌陷地不同土地利用类型土壤性质损害特征[J]. 土壤通报, 2022, 53(5): 1029 − 1037. DOI: 10.19336/j.cnki.trtb.2021111803
BAI Meng-tong, DU Hua-dong, FAN Peng-hui, CAO Yi-chen. Damage Characteristics of Soil Properties in Different Land Use Types under Mining Subsidence Areas in Loess Hilly Area[J]. Chinese Journal of Soil Science, 2022, 53(5): 1029 − 1037. DOI: 10.19336/j.cnki.trtb.2021111803
Citation: BAI Meng-tong, DU Hua-dong, FAN Peng-hui, CAO Yi-chen. Damage Characteristics of Soil Properties in Different Land Use Types under Mining Subsidence Areas in Loess Hilly Area[J]. Chinese Journal of Soil Science, 2022, 53(5): 1029 − 1037. DOI: 10.19336/j.cnki.trtb.2021111803

黄土沟壑区采煤塌陷地不同土地利用类型土壤性质损害特征

基金项目: 陕西省自然科学基础研究计划(2019JM-460)、中国博士后科学基金(2018M643689)和榆林市科技计划重大项目(6130819001) 资助
详细信息
    作者简介:

    拜梦童(1997−),陕西大荔人,硕士研究生。研究方向:矿山生态修复及生态效益评价。E-mail: baimt18391505165@163.com

    通讯作者:

    杜华栋: E-mail: dddhhhddd@126.com

  • 中图分类号: S153

Damage Characteristics of Soil Properties in Different Land Use Types under Mining Subsidence Areas in Loess Hilly Area

  • 摘要:
      目的  探究半干旱榆神府矿区采煤塌陷地不同土地利用类型地表土壤损害程度和机理。
      方法  选择榆神府矿区黄土沟壑地貌下林地、耕地、园地和草地4种不同土地利用类型,分析地表塌陷前后土壤物理、化学和生物学性质的变化特征,通过主成分分析和排序探讨采煤塌陷对不同土地利用类型土壤性质的影响。
      结果  4种土地利用类型地表塌陷1 ~ 2年内土壤性质均朝着水分、养分减小的方向发展,但不同土地利用类型塌陷地土壤损害特征具有明显差异,其中草地的土壤机械组成和养分含量、林地的速效养分特征、园地的砂粒含量各自变化较显著;土壤机械组成、有机质和水分含量是影响榆神府矿区土壤质量变化的关键因子;在矿区损害地土壤系统修复过程中,除必要的塌陷地充填外,草地还需采取人工施肥、补水和微地形改造等措施,林地还需施加氮磷肥辅以相应的微生物菌剂,园地和耕地损害较小可减小人工干预。
      结论  半干旱或干旱区煤炭开采塌陷地在生态修复过程中,针对不同土地利用类型土壤损害程度与成因采取对应的恢复措施,有利于矿区生态环境高效和高质量恢复。

     

    Abstract:
      Objective  The degree and mechanism of surface soil damage under different land use types need to be explored in the semi-arid Yulin-Shenmu-Fugu mining subsidence area.
      Method  Four different land use types, including forest land, cultivated land, orchard land and grassland, were selected in Yulin-Shenmu-Fugu mining area at loess gully landform. The change characteristics of soil physical, chemical and biological properties before and after surface collapse were analyzed, and the influence of coal mining subsidence on soil properties of different land use types was discussed by principal component analysis and sorting.
      Results  Within 1-2 years after the surface subsidence of four land use types, the soil properties all developed towards the direction of decreasing water and nutrients. However, there were obvious differences in soil damage characteristics among different land use types. The soil particle composition and nutrient content of grassland, available nutrient characteristics of forestland, and sand particle content of orchard land changed significantly in their own respectively. Soil mechanical composition, organic matter and water content were the key factors affecting soil quality changes in the Yulin-Shenmu-Fugu mining area. In the process of soil system restoration of damaged land in mining area, in addition to the necessary filling of the collapsed land, measures such as artificial fertilization, irrigation and micro-topographic reconstruction should also be adopted for grassland, and forestland soil should be mainly applied with nitrogen and phosphate fertilizer supplemented by corresponding microbial agents. The less damaged orchard land and cultivated land could reduce manual intervention.
      Conclusion  In the process of ecological restoration in coal mining subsidence areas in semi-arid or arid areas, according to the degree and causes of soil damage of different land use types, taking corresponding restoration measures is beneficial to the efficient and high-quality restoration of the ecological environment of mining areas.

     

  • 图  1   研究区位置图

    Figure  1.   The map of study area

    图  2   不同土地利用类型地表塌陷前后土壤粒径分布

    Figure  2.   Soil particle size distribution before and after surface subsidence under different land use types

    图  3   不同土地利用类型地表塌陷前后含水率变化特征

    Figure  3.   Characteristics of water contents before and after surface subsidence under different land use types

    图  4   不同土地利用类型地表塌陷前后土壤生物学变化特征

    Figure  4.   Characteristics of soil biological changes before and after land subsidence under different land use types

    图  5   不同土地利用类型下样地与土壤理化生性质之间的PCA分析

    Figure  5.   PCA analysis between sample plots and soil physiochemical properties under different land use types

    表  1   研究样地基本情况

    Table  1   Basic information of sample plots

    样地类型
    Sample type
    所处井田
    The field
    海拔(m)
    Elevation
    坡度
    Gradient
    坡向
    Slope aspect
    主要建群物种
    Major constructive species
    林地 麻黄梁、榆家梁、红柳林、柠条塔 1100 ~ 1300 10° ~ 30° 南坡 柠条(Caragana korshinskii)、沙棘(Hippophae rhamnoid
    耕地 麻黄梁、榆家梁、凉水井、柠条塔 1200 ~ 1260 7° ~ 20° 南坡 玉米(Zea mays
    园地 麻黄梁、榆家梁、凉水井 1100 ~ 1300 10° ~ 25° 南坡 山杏(Amrmeniaca sibirica
    草地 麻黄梁、榆家梁、红柳林、柠条塔 1100 ~ 1350 10° ~ 30° 南坡 长芒草(Stipa bungeana)、黑沙蒿(Artemisia ordosica)
    下载: 导出CSV

    表  2   不同土地利用类型地表塌陷前后土壤容重及pH变化特征

    Table  2   Changes of soil bulk density and pH before and after surface subsidence under different land use types

    土地利用类型
    Land use type
    土壤容重(g cm−3)
    Soil bulk density
    土壤pH
    Soil pH
    塌陷地
    Subsidence area
    未塌陷地
    Non-subsidence area
    塌陷地
    Subsidence area
    未塌陷地
    Non-subsidence area
    林地 1.19 ± 0.05 a 1.32 ± 0.03 d 8.41 ± 0.09 a 8.49 ± 0.07 a
    耕地 1.14 ± 0.01 f 1.13 ± 0.04 f 8.38 ± 0.09 a 8.37 ± 0.18 a
    园地 1.34 ± 0.05 d 1.43 ± 0.04 c 8.41 ± 0.03 a 8.36 ± 0.23 a
    草地 1.29 ± 0.02 d 1.59 ± 0.05 b 8.48 ± 0.09 a 8.41 ± 0.09 a
      注:不同小写字母表示同一测定指标下,不同土地利用类型和塌陷前后土壤差异显著(P < 0.05);下同。
    下载: 导出CSV

    表  3   不同土地利用类型地表塌陷前后土壤养分变化特征

    Table  3   Characteristics of soil nutrients before and after surface subsidence under different land use types

    土地利用类型
    Land use type
    地表状态
    Surface state
    有机质(g kg−1)
    Organic matter
    总氮(mg kg−1)
    Total nitrogen
    总磷(mg kg−1)
    Total phosphorus
    速效磷(mg kg−1)
    Available phosphorus
    速效氮(mg kg−1)
    Available nitrogen
    速效钾(mg kg−1)
    Available potassium
    林地 塌陷地 1.61 ± 0.40 bcd 0.24 ± 0.08 a 0.31 ± 0.14 b 0.61 ± 0.27 b 53.58 ± 35.29 a 137.14 ± 16.87 a
    未塌陷地 2.23 ± 0.14 ab 0.27 ± 0.07 a 0.48 ± 0.24 b 0.93 ± 0.48 b 41.57 ± 15.87 a 159.34 ± 30.15 a
    耕地 塌陷地 0.96 ± 0.47 d 0.26 ± 0.10 a 0.63 ± 0.41 b 1.24 ± 0.79 b 47.97 ± 15.11 a 155.50 ± 37.22 a
    未塌陷地 1.33 ± 0.29 cd 0.33 ± 0.16 a 1.40 ± 0.71 a 3.78 ± 3.14 a 50.37 ± 26.80 a 147.44 ± 67.72 a
    园地 塌陷地 2.43 ± 0.15 ab 0.27 ± 0.17 a 0.52 ± 0.27 b 1.03 ± 0.53 b 36.63 ± 23.97 a 190.93 ± 12.61 a
    未塌陷地 2.50 ± 0.78 a 0.32 ± 0.16 a 0.44 ± 0.38 b 0.86 ± 0.74 b 50.18 ± 22.13 a 165.85 ± 41.78 a
    草地 塌陷地 2.40 ± 0.36 ab 0.23 ± 0.06 a 0.44 ± 0.16 b 0.87 ± 0.32 b 37.88 ± 10.83 a 122.44 ± 17.59 a
    未塌陷地 2.01 ± 0.31 abc 0.30 ± 0.10 a 0.46 ± 0.20 b 0.90 ± 0.39 b 44.69 ± 25.73 a 160.71 ± 18.60 a
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-11-17
  • 修回日期:  2022-03-23
  • 录用日期:  2022-03-23
  • 发布日期:  2022-09-29

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