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草业学报 ›› 2025, Vol. 34 ›› Issue (7): 41-53.DOI: 10.11686/cyxb2024312

• 研究论文 • 上一篇    下一篇

宁夏贺兰山东麓葡萄产区土壤有机碳库空间变异及影响因素

王玉霞1,2,3(), 杜灵通2,3(), 易志远2,3, 罗霄2,3, 苏丽4, 乔成龙1,2,3, 薛斌2,3   

  1. 1.宁夏大学林业与草业学院,宁夏 银川 750021
    2.宁夏大学西北土地退化与生态恢复省部共建国家重点实验室培育基地,宁夏 银川 750021
    3.宁夏大学西北退化生态系统恢复与重建教育部重点实验室,宁夏 银川 750021
    4.宁夏贺兰山东麓葡萄酒产业园区管理委员会,宁夏 银川 750104
  • 收稿日期:2024-08-08 修回日期:2024-09-30 出版日期:2025-07-20 发布日期:2025-05-12
  • 通讯作者: 杜灵通
  • 作者简介:E-mail: dult80@qq.com
    王玉霞(1993-),女,甘肃甘谷人,在读博士。E-mail: 1911340132@qq.com
  • 基金资助:
    宁夏重点研发计划项目(2022BEG02051)

Spatial variation and factors influencing the soil organic carbon pool in grape-producing areas at the eastern foothills of Helan Mountain in Ningxia

Yu-xia WANG1,2,3(), Ling-tong DU2,3(), Zhi-yuan YI2,3, Xiao LUO2,3, Li SU4, Cheng-long QIAO1,2,3, Bin XUE2,3   

  1. 1.College of Forestry and Prataculture,Ningxia University,Yinchuan 750021,China
    2.Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China,Ningxia University,Yinchuan 750021,China
    3.Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China of Ministry of Education,Ningxia University,Yinchuan 750021,China
    4.Ningxia Helan Mountain Eastern Foot Wine Industry Park Management Committee,Yinchuan 750104,China
  • Received:2024-08-08 Revised:2024-09-30 Online:2025-07-20 Published:2025-05-12
  • Contact: Ling-tong DU

摘要:

干旱荒漠草原区垦殖葡萄园不仅能推动经济发展,而且具有增加生态系统碳汇的潜在价值。本研究以宁夏贺兰山东麓葡萄产区为对象,基于2023年5-7月在0~100 cm土壤剖面每20 cm深度采集的土壤样品,不仅测定土壤有机碳(SOC)含量和总碳含量,还测定耕作干扰较强的表层土壤(0~40 cm)中SOC的活性、中性和惰性组分含量,采用地理空间插值和单因素方差分析,开展不同土壤类型区和典型葡萄园的SOC库特征研究及影响因素分析。结果表明:1)该产区0~100 cm剖面的SOC含量为3.0~11.1 g·kg-1,土壤养分缺乏,平均SOC密度为52.85 t·hm-2,具有中等变异程度;其中0~40 cm表层土壤的SOC富集系数大于1,即表层土壤碳固持能力更强;2)受葡萄垦殖活动的碳输入影响,整个葡萄产区表层0~40 cm的土壤总碳、SOC、活性SOC和惰性SOC含量呈西高东低的分布,具有较强的空间异质性特点;3)产区土壤碳库稳定性较强,不仅无机碳占总碳比例高达74.8%,而且SOC中的惰性组分含量达50%,土壤碳库活度较低;4)受制于土壤发育背景差异,不同土壤类型对SOC特征的影响较大,虽然风沙土的SOC密度高于灰钙土,但风沙土的SOC含量低于灰钙土,且风沙土的碳库活度也最大,其SOC的稳定性较差。以上认识可为宁夏贺兰山东麓葡萄园生态系统碳汇核算提供科学依据。

关键词: 贺兰山东麓, 葡萄园, 垦殖活动, 土壤有机碳, 碳密度

Abstract:

The cultivation of vineyards in arid desert grassland is not only of economic benefit, but also has a potential role in increasing the carbon sink capacity of the ecosystem. In this study, the grape-producing area on the eastern foothills of Helan Mountain in Ningxia was used as a study site. Soil samples were collected from soil layers at successive 20 cm depth increments in a 0-100 cm soil profile between May and July 2023, and the soil organic carbon (SOC) content and the total carbon content were measured. In addition, the active, neutral, and inert SOC content were also measured in the upper soil layer (0-40 cm), which is intensely disturbed by cultivation. The characteristics of SOC pools were studied for different soil types in typical vineyards using a geospatial interpolation technique and one-way ANOVA and factors influencing their variability are discussed. It was found that: 1) SOC content in the 0-100 cm soil depth ranged from 3.0 to 11.1 g·kg-1 in the grape-producing area, indicating a lack of soil fertility, with an average SOC density of 52.85 t·ha-1 and moderate variability. The SOC enrichment coefficient in the upper soil layer (0-40 cm) was greater than 1, indicating a stronger carbon sequestration capacity in the upper soil layer. 2) The total carbon, SOC, active SOC, and inert SOC contents in the upper soil layer (0-40 cm) were higher in the west than in the east of the grape-producing area, which was impacted by organic carbon inputs from grape cultivation and thus has significant spatial heterogeneity. 3) The soil carbon pool in the grape-producing area was stable since inorganic carbon constituted 74.8% of the total carbon and inert SOC accounted for 50% of SOC, resulting in low activity of the soil carbon pool. 4) Due to the different soil development scenarios, characteristics of SOC varied significantly with soil type. Although sandy soil had a SOC density higher than a sierozem soil, its SOC content was lower; sandy soil had the highest SOC density and carbon pool activity resulting in lower SOC stability. These findings provide scientific data for the carbon sink accounting and inventory of vineyard ecosystems at the eastern foothills of the Helan Mountains in Ningxia.

Key words: east foothills of Helan Mountain, vineyards, reclamation activities, soil organic carbon, carbon density