Relationship Between Plant Species Diversity and Ecosystem Multifunctionality in Alpine Meadow with Different Degradation Degrees

doi:10.11733/j.issn.1007-0435.2022.12.028

Acta Agrestia Sinica ›› 2022, Vol. 30 ›› Issue (12): 3410-3422.DOI: 10.11733/j.issn.1007-0435.2022.12.028

Relationship Between Plant Species Diversity and Ecosystem Multifunctionality in Alpine Meadow with Different Degradation Degrees

ZHOU Chen-yu¹, YANG Xiao-yuan^2,3, SHAO Xin-qing⁴, ZHANG Zhong-hua², MA Li², QIN Rui-min², SHE Yan-di², SU Hong-ye², CHANG Tao², WEI Jing-jing¹, HU Xue², LA Ben^1,5, ZHOU Hua-kun²

1. College of life sciences, Qinghai Normal University, Xining, Qinghai Province 810008, China;
2. Key Laboratory of Restoration Ecology for Cold Regions Laboratory in Qinghai, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810001, China;
3. Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei, Anhui Province 230031, China;
4. China Agricultural University, Beijing 100193, China;
5. Key Laboratory of Medicinal Animal and Plant Resources of Qinghai-Tibetan Plateau in Qinghai Province, Xining, Qinghai Province 810008, China

Received:2022-08-08 Revised:2022-08-26 Published:2023-01-04

不同退化程度高寒草甸植物物种多样性与生态系统多功能性关系

周宸宇¹, 杨晓渊^2,3, 邵新庆⁴, 张中华², 马丽², 秦瑞敏², 佘延娣², 苏洪烨², 常涛², 魏晶晶¹, 胡雪², 拉本^1,5, 周华坤²

1. 青海师范大学生命科学学院, 青海西宁 810008;
2. 中国科学院西北高原生物研究所青海省寒区恢复生态学重点实验室, 青海西宁 810001;
3. 中国科学院合肥物质科学研究院, 安徽合肥 230031;
4. 中国农业大学, 北京 100193;
5. 青海省青藏高原药用动植物资源重点实验室, 青海西宁 810008

通讯作者: 周华坤,E-mail:hkzhou@nwipb.cas.cn
作者简介:周宸宇(1996-),男,汉族,吉林四平人,硕士研究生,主要从事生态学研究,E-mail:zcy7707@qq.com
基金资助:
青海省创新平台建设专项(2022-ZJ-Y02);国家自然科学基金联合基金项目(U21A20186,U20A2006);林草新技术推广项目(QSCZ-2022-009);三江源国家公园联合研究专项(LHZX-2020-08);第二次青藏高原综合科学考察研究项目(2019QZKK0302)资助

Abstract

Abstract: In order to explore the changes in ecosystem multifunctionality in an alpine meadow with different degrees of degradation,this study comprehensively considered plant species diversity and various ecosystem functions,such as productivity,nutrient circulation,and storage capacity,soil water conservation capacity,etc. The multi-functionality of the ecosystem was calculated by dimension reduction factor analysis,and the relationship between plant species diversity and ecosystem functions and multifunctionality was comprehensively analyzed. The results showed that the degradation of the alpine meadow significantly reduced the Margalef index,Shannon Weiner index,Simpson index,and Pielou index (P<0.05),and each function of the ecosystem tended to deteriorate. The degradation of the alpine meadow led to the decline of ecosystem multifunctionality. The comprehensive statistical results were:Lightly degraded (21.995 5)>Moderately degraded (8.729 5)>Severely degraded (-30.724 5). There was a positive correlation between plant species diversity and ecosystem multifunctionality,among which the Simpson index and ecosystem multifunctionality index fitted best,indicating that the alpine meadow ecosystem multifunctionality was restricted by plant species diversity. This study can provide a theoretical basis for the study of the process and mechanism of grassland degradation and restoration in the Qinghai Tibet Plateau.

Key words: Alpine meadow, Grassland degradation, Species diversity, Redundancy analysis, Ecosystem multifunctionality

摘要： 为探究高寒草甸不同退化程度生态系统多功能性的变化，本研究综合考虑了植物物种多样性和多种生态系统功能如生产力、养分循环和固存能力、土壤涵养水分能力等，运用降维因子分析的方法计算了生态系统多功能性，综合分析了植物物种多样性与生态系统功能和多功能性间的关系。结果表明：高寒草甸退化显著降低了Margalef指数、Shannon-weiner指数、Simpson指数和Pielou指数(P<0.05)，各生态系统功能趋于恶化。高寒草甸退化导致生态系统多功能性的下降，综合统计量结果为轻度退化(21.9955)＞中度退化(8.7295)＞重度退化(—30.7245)。植物物种多样性与生态系统多功能性之间均存在正相关关系，其中Simpson指数与生态系统多功能性指数拟合的结果最好，说明高寒草甸生态系统多功能性受植物物种多样性的制约。本研究可为青藏高原草地退化及恢复的过程和机理研究提供理论依据。

关键词: 高寒草甸, 草地退化, 物种多样性, 冗余分析, 生态系统多功能性

CLC Number:

X176

ZHOU Chen-yu, YANG Xiao-yuan, SHAO Xin-qing, ZHANG Zhong-hua, MA Li, QIN Rui-min, SHE Yan-di, SU Hong-ye, CHANG Tao, WEI Jing-jing, HU Xue, LA Ben, ZHOU Hua-kun. Relationship Between Plant Species Diversity and Ecosystem Multifunctionality in Alpine Meadow with Different Degradation Degrees[J]. Acta Agrestia Sinica, 2022, 30(12): 3410-3422.

周宸宇, 杨晓渊, 邵新庆, 张中华, 马丽, 秦瑞敏, 佘延娣, 苏洪烨, 常涛, 魏晶晶, 胡雪, 拉本, 周华坤. 不同退化程度高寒草甸植物物种多样性与生态系统多功能性关系[J]. 草地学报, 2022, 30(12): 3410-3422.

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Relationship Between Plant Species Diversity and Ecosystem Multifunctionality in Alpine Meadow with Different Degradation Degrees

不同退化程度高寒草甸植物物种多样性与生态系统多功能性关系

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