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草业学报 ›› 2025, Vol. 34 ›› Issue (8): 79-87.DOI: 10.11686/cyxb2024356

• 研究论文 • 上一篇    下一篇

青藏高原剥离草甸不同堆存方式对根系活性的影响

耿玉刚1(), 杨红梅1, 王文武2(), 罗睿杰1, 赵保国2, 陈江红1, 秦昌盛3, 陈锐银1   

  1. 1.华电金上昌都新能源有限公司,西藏 昌都 854000
    2.中国电建集团成都勘测设计研究院有限公司,四川 成都 610000
    3.国电南京自动化股份有限公司,江苏 南京 210000
  • 收稿日期:2024-09-23 修回日期:2024-11-20 出版日期:2025-08-20 发布日期:2025-06-16
  • 通讯作者: 王文武
  • 作者简介:E-mail: 695019587@qq.com
    耿玉刚(1970-),男,山东桓台人,高级工程师,硕士。E-mail: ccqy_2023@qq.com
  • 基金资助:
    成都院项目(NZK22272);成都院博后课题(P60224);华电集团科技项目(CHDKJ23-02-01-82);昌都新能源项目(CDXNY23-07-07-02)

Effects of stockpiling methods on root activity in stripped alpine meadows of the Qinghai-Tibet Plateau

Yu-gang GENG1(), Hong-mei YANG1, Wen-wu WANG2(), Rui-jie LUO1, Bao-guo ZHAO2, Jiang-hong CHEN1, Chang-sheng QIN3, Rui-yin CHEN1   

  1. 1.Huadian Jinsha River Upstream Changdu New Energy Co. Lid. ,Changdu 854000,China
    2.POWERCHINA Chengdu Engineering Corporation Limited,Chengdu 610000,China
    3.Guodian Nanjing Automation Co. ,Ltd. ,Nanjing 210000,China
  • Received:2024-09-23 Revised:2024-11-20 Online:2025-08-20 Published:2025-06-16
  • Contact: Wen-wu WANG

摘要:

随着青藏高原地区资源开发的加速,特别是光伏电站建设的推进,草甸的保护面临严峻挑战。本研究旨在系统评估不同堆存方式对青藏高原地区剥离草甸根系活性的影响,探索最佳的草甸根系保护措施。本研究选取了平铺法、镂空法、支架法、三层重叠法、五层重叠法和水土保持方案支架法(以下简称“水保支架法”),通过综合分析这6种方式下土壤的理化性质和草甸根系活性,评估其对剥离草甸保护的效果。测定了不同堆存方式下的土壤pH值、有机碳、全氮、全钾、全磷、有效磷、速效钾、碱解氮含量等理化指标,以及表征草甸根系活性的氯化三苯基四氮唑(TTC,mg·kg-1·h-1)还原强度,并探讨了这些指标与根系活性之间的关系。结果表明:不同堆存方式对于土壤理化性质的影响有限。水保支架法在维持草甸根系活性方面具有显著优势。根系TTC还原强度依次为:水保支架法(5.52 mg·kg-1·h-1)>支架法(4.52 mg·kg-1·h-1)>镂空法(4.02 mg·kg-1·h-1)>平铺法(3.74 mg·kg-1·h-1)>五层重叠法(3.71 mg·kg-1·h-1)>三层重叠法(3.54 mg·kg-1·h-1)。钾元素(全钾和速效钾)在促进根系生长、提高呼吸速率和增强抗逆性方面发挥重要作用,而土壤pH值、有机碳含量和磷元素对根系活性的影响较小。总的来说,本研究揭示了不同堆存方式对剥离草甸根系活性的影响,为草甸生态修复及可持续发展提供了科学依据。

关键词: 草甸生态系统, 堆存方式, 根系活性, 影响因子, 生态修复

Abstract:

With the increasing rate of economic development in the Qinghai-Tibet Plateau, particularly the construction of photovoltaic power stations, meadow conservation faces significant challenges. This study systematically evaluated the impact of different stockpiling methods on the root activity of stripped alpine meadows on the Qinghai-Tibet Plateau, aiming to identify the pattern that most effectively preserved root activity. Six stockpiling methods were tested: flat-laying, hollow, scaffold, three-layer overlapping, five-layer overlapping, and a soil and water conservation scaffold (hereafter referred to as a “conservation scaffold”). Soil physicochemical properties and meadow root activity under the six stockpiling methods were comprehensively analyzed to assess their effectiveness in protecting stripped meadows. Key soil properties, including pH, organic carbon content, total nitrogen content, total potassium content, total phosphorus content, available phosphorus content, available potassium content, and alkaline hydrolyzable nitrogen content, were measured, along with triphenyltetrazolium chloride (TTC, mg·kg?1·h?1) reduction intensity as an indicator of root activity. The relationships between these indicators and root activity were also examined. The results show that the different stockpiling methods had limited influence on soil physicochemical properties. However, the conservation scaffold showed a significant advantage in maintaining meadow root activity, with root TTC reduction intensity as follows: Conservation scaffold (5.52 mg·kg?1·h?1)>scaffold (4.52 mg·kg?1·h?1)>hollow (4.02 mg·kg?1·h?1)>flat-laying (3.74 mg·kg?1·h?1)>five-layer overlapping (3.71 mg·kg?1·h?1)>three-layer overlapping (3.54 mg·kg?1·h?1). Soil potassium level (total potassium and available potassium) was strongly associated with promotion of root growth, increased soil respiration rate, and enhanced stress resistance, while soil pH, organic carbon content, and phosphorus had weaker associations with root activity. Overall, this study reveals the effects of different photovoltaic panel installation patterns on the root activity of stripped meadows, providing scientific data to support meadow ecological restoration and sustainable development planning.

Key words: meadow ecosystem, stockpiling methods, root activity, influencing factors, ecological restoration