草地学报

草地学报 ›› 2021, Vol. 29 ›› Issue (12): 2752-2762.DOI: 10.11733/j.issn.1007-0435.2021.12.015

• 研究论文 • 上一篇    下一篇

不同材质可降解无纺布覆盖种植对高寒人工草地土壤碳氮磷化学计量特征的影响

陈白洁1,2, 樊博1, 汪新川3, 张振华1   

  1. 1. 中国科学院西北高原生物研究所适应与进化重点实验室, 青海 西宁 810008;
    2. 中国科学院大学, 北京 100049;
    3. 青海省牧草良种繁殖场, 青海 海南 813000
  • 收稿日期:2021-07-21 修回日期:2021-08-22 出版日期:2021-12-15 发布日期:2022-01-06
  • 作者简介:陈白洁(1993-)，女，安徽蚌埠人，硕士研究生，主要从事退化高寒草地生态系统生态修复研究,E-mail:m15500772618@163.com
  • 基金资助:
    青海省基础研究计划应用基础研究项目（2019-ZJ-7007）；青海省重点研发与转化计划项目（2019-SF-152）；三江源国家公园联合研究专项（LHZX-2020-02-02）资助

Effects of Different Degradable Material Non-woven on the Soil Stoichiometric Characteristics of Carbon,Nitrogen and Phosphorus in Alpine Artificial Grassland

CHEN Bai-jie1,2, FAN Bo1, WANG Xin-chuan3, ZHANG Zhen-hua1   

  1. 1. Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining 810008, China;
    2. University of Chinese Academy of Science, Beijing 100049;
    3. Qinghai Forage and Seed Breeding Factory, Hainan 8130008, China
  • Received:2021-07-21 Revised:2021-08-22 Online:2021-12-15 Published:2022-01-06
  • Contact: 张振华,E-mail:zhenhua@nwipb.cas.cn

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摘要： 为研究不同材质无纺布覆盖对高寒人工草地土壤碳氮磷化学计量特征的影响，选择5种常用生态修复草种，比较了5种可降解无纺布材料覆盖对其种植后土壤碳氮磷含量的影响。结果表明：白色厚羊毛纤维无纺布覆盖显著增加了星星草0~20 cm土层13.21%的土壤总氮和15.32%的有机碳含量；白色薄羊毛纤维无纺布显著增加了其0~20 cm土层15.25%的总氮含量以及10~20 cm土层6.78%的总磷含量；秸秆纤维无纺布显著增加了青海中华羊茅0~20 cm土层17.28%的有机碳、29.91%的总氮和11.47%的总磷含量。相关性分析表明，土壤有机碳、总氮、总磷与土壤平均温度和最低温度显著负相关，与土壤含水量显著正相关（P<0.05）。因此，无纺布覆盖主要通过影响土壤最低温度和含水量间接影响人工草地牧草的生长发育和对养分的吸收利用。

关键词: 可降解无纺布, 人工草地, 土壤养分, 化学计量特征

Abstract: To explore the effects of different materials of non-woven fabric mulching on the stoichiometric characteristics of soil carbon,nitrogen and phosphorus of alpine artificial grassland,we choose five type of degradable non-woven fabrics and five alpine ecological restoration forages to evaluate its effects on soil stoichiometric characteristics of carbon,nitrogen and phosphorus. Results showed that white thick wool fiber non-woven fabric mulching only significantly increased soil total nitrogen (STN) of Puccinellia tenuiflora by 13.21% and increased organic carbon (SOC) of Puccinellia tenuiflora by 15.32% at 0~20 cm depth. However,white thin wool fiber non-woven fabric mulching significantly increased STN of Puccinellia tenuiflora by 15.25% at 0~20 cm depth,and increased STP by 6.78%at 10~20 cm depth. In addition,straw fiber non-woven fabric mulching significantly increased SOC,STN and STP of Festuca sinensis ‘Qinghai’ at 0~20 cm depth by 17.28%,29.91%,and 11.47%,respectively. Correlation analysis showed that SOC,STN,and STP were significantly decreased with the increase of soil average temperature and minimum temperature but increased with the increase of soil water content(P<0.05). These indicate that non-woven fabric mulching significantly affects the growth and nutrient absorption of artificial grassland mainly via influencing soil minimum temperature and water content.

Key words: Degradable non-woven fabric, Artificial grassland, Soil nutrients, Stoichiometric characteristics

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