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林草资源研究 ›› 2024›› Issue (5): 96-105.doi: 10.13466/j.cnki.lczyyj.2024.05.011

• 科研研究 • 上一篇    下一篇

库布齐沙漠风沙入河段不同植被恢复类型对土壤的影响

郝斯然(), 蒙仲举()   

  1. 内蒙古农业大学 沙漠治理学院,呼和浩特 010018
  • 收稿日期:2024-08-30 修回日期:2024-10-10 出版日期:2024-10-28 发布日期:2025-04-18
  • 通讯作者: 蒙仲举,教授,博士,主要研究方向为水土保持与荒漠化防治。Email:mengzhongju@126.com
  • 作者简介:郝斯然,硕士研究生,主要研究方向为荒漠化防治。Email:615718870@qq.com
  • 基金资助:
    内蒙古自治区科技计划“水沙交汇处流沙入黄机制研究及其综合治理效果评价”(2022YFHH0076);鄂尔多斯市重大科技攻关项目“光伏电场沙害防治综合技术研究”(2022EEDSKJZDZX020-4)

Impact of Different Vegetation Restoration Types on Soil in the Wind-sand Inflow Section of the Hobq Desert

HAO Siran(), MENG Zhongju()   

  1. College of Desert Control Science and Engineering,Inner Mongolia Agricultural University,Hohhot 010018,China
  • Received:2024-08-30 Revised:2024-10-10 Online:2024-10-28 Published:2025-04-18

摘要: 明确沙地植被恢复对土壤性质的影响,对于区域水土资源保护与适应性管理具有重要意义。选取库布齐沙漠风沙入河段人工恢复18 a花棒纯林(HB)、旱柳+小叶杨+柠条锦鸡儿+沙枣混交林(HYNZ)、小叶杨+樟子松混交林(YS)、小叶杨+沙柳混交林(YL)4种典型植被恢复类型,采用野外原位采样与室内化验方法对4种植被恢复类型下的土壤性质差异进行对比分析。结果表明:1)不同植被恢复类型下的土壤细颗粒物质含量显著增加(P<0.05),粗砂粒含量降低;2)不同植被恢复类型下的土壤pH值降低0.18~0.83,4种植被恢复类型对电导率的影响表现为HB>YL>HYNZ>YS;3)4种植被恢复类型的土壤容重均显著降低(P<0.05),其中土壤表层容重变化最为显著;4)植被恢复后,土壤养分均得到不同程度提高,且呈现明显的表聚性特征,整体上混交林的增幅高于花棒纯林。库布齐沙漠风沙入河段人工植被恢复对土壤修复效果明显,使土壤向细粒化方向发展,促进土壤养分循环。基于水土资源承载禀赋,乔灌混合配置的防护植被体系更有利于库布齐沙漠生态系统的稳定恢复。

关键词: 植被恢复, 防风固沙, 土壤养分, 库布齐沙漠

Abstract:

In order to explore the influence of sandy vegetation restoration on the properties of wind-sand soil,which is crucial for the rational conservation and adaptive management of regional soil and water resources.The research focuses on four typical communities of artificial vegetation communities in the Hobq Desert sand inflow section:18-year-old Corethrodendron scoparium forest(HB),Salix matsudana+Populus simonii+Caragana korshinkii+Elaeagnus angustifolia mixed forest(HYNZ),Populus simonii+Pinus sylvestris var.mongholica Litv.mixed forest(YS),Populus simonii+Salix psammophila mixed forest(YL).The differences in soil properties under the four vegetation restoration types were comparatively analyzed through the combination of in situ sampling in the field and indoor laboratory tests.1)By planting artificial vegetation,the content of fine particulate matter of soil under different vegetation restoration types was significantly increased(P<0.05),and the content of coarse sand particles was decreased.2)Soil pH under different vegetation restoration types was decreased by 0.18~0.83.The effect of the four vegetation types on the electrical conductivity showed that HB>YL>HYNZ>YS.3)Soil bulk density significantly decreased under all vegetation restoration types (P<0.05),with the most considerable change observed in the surface layer.4)After vegetation restoration,soil nutrients were improved to different degrees. There was an obvious epimerization characteristic. The increase of mixed forests was higher than that of Corethrodendron scoparium fores. Artificial vegetation restoration promotes soil recovery in the Hobq Desert sands inlet section by developing fine-grained soil structures and enhancing soil nutrient cycling. Based on the prevailing soil and water resources,it is recommended to construct a protective vegetation system with a diverse array of arboreal and herbaceous species,which is more conducive to the long-term restoration of the regional ecosystem in the Hobq Desert region.

Key words: vegetation restoration, wind prevention and sand fixation, soil nutrients, Hobq Desert

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