Acta Agrestia Sinica ›› 2023, Vol. 31 ›› Issue (8): 2361-2368.DOI: 10.11733/j.issn.1007-0435.2023.08.012

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Variation of Organic and Inorganic Carbon in Topsoil and Physicochemical Factors under Different Artificial Grasslands in Alpine Region

LI Na1,2, ZHAO Na1, WANG Ya-lin1,2, WEI Lin1,2, ZHANG Qian1,2, GUO Tong-qing1,2, WANG Xun-gang1, XU Shi-xiao1   

  1. 1. Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810001, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2023-01-11 Revised:2023-03-15 Online:2023-08-15 Published:2023-09-01

高寒人工草地不同植被类型下表层土壤有机碳和无机碳变化及土壤理化因子

李娜1,2, 赵娜1, 王娅琳1,2, 魏琳1,2, 张骞1,2, 郭同庆1,2, 王循刚1, 徐世晓1   

  1. 1. 中国科学院西北高原生物研究所, 青海 西宁 810001;
    2. 中国科学院大学, 北京 100049
  • 通讯作者: 徐世晓,E-mail:sxxu@nwipb.cas.cn
  • 作者简介:李娜(1999-),女,汉族,山西永济人,硕士研究生,主要从事草地生态研究,Email:lina211@mails.ucas.ac.cn
  • 基金资助:
    青海省应用基础研究项目(2023-ZJ-767)、中国科学院西部之光跨学科创新团队项目(CASLWC-2021)、国家重点研发计划(2021YFD1600205)、第二次青藏高原综合科学考察研究(2019QZKK040104)资助

Abstract: To gain a deeper understanding of the differences in organic and inorganic carbon content in the soil of alpine artificial grasslands under different vegetation types,as well as the relationship between soil carbon content and soil physicochemical factors,the three different artificial alpine grasslands:annual Triticale Wittmack artificial grassland,annual grass—bean mixed artificial grassland and Elymus nutans Griseb. artificial grassland were chosen in this study. The soil organic and inorganic carbon content were measured and their changes analyzed. The results showed that there were significant differences in soil organic and inorganic carbon content among the three artificial grasslands. Soil magnesium ion concentration,total nitrogen content,and soil pH value were the main influencing factors on soil organic and inorganic carbon content in the study area. The results of this study provided a regional data and scientific reference for promoting the most suitable artificial grasslands in alpine region.

Key words: Soil organic carbon, Soil inorganic carbon, Alpine artificial grassland, Vegetation type

摘要: 为深入了解高寒人工草地土壤有机碳(Soil organic carbon,SOC)、无机碳(Soil inorganic carbon,SIC)含量在不同植被类型下的差异性以及土壤有机碳、无机碳含量与土壤理化因子的相关关系。本研究选取高寒人工草地一年生单播小黑麦(HM)、一年生禾、豆混播(HB)以及多年生垂穗披碱草(PJC)植被类型为研究对象,测定并分析3种植被类型下土壤有机碳和无机碳含量变化特征。结果表明:土壤有机碳和无机碳含量在3种植被类型下均表现出显著的差异性。土壤镁离子浓度、全氮(Total nitrogen,TN)含量、土壤pH是影响该区域土壤有机碳和无机碳含量的主要因素。本研究结果为推行适宜高寒人工草地最佳的植被类型提供区域数据和科学参考。

关键词: 土壤有机碳, 土壤无机碳, 高寒人工草地, 植被类型

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