草业学报 ›› 2025, Vol. 34 ›› Issue (6): 14-26.DOI: 10.11686/cyxb2024286
罗顺华1(
), 刘新宇2,3,4, 孟宝平5,6, 陈璇黎5,6, 胡仁杰5,6, 于红妍7, 王贤颖7, 张勃1(
), 秦彧2,3,4(
)
收稿日期:2024-07-17
修回日期:2024-08-08
出版日期:2025-06-20
发布日期:2025-04-03
通讯作者:
张勃,秦彧
作者简介:qiny@lzb.ac.cn基金资助:
Shun-hua LUO1(
), Xin-yu LIU2,3,4, Bao-ping MENG5,6, Xuan-li CHEN5,6, Ren-jie HU5,6, Hong-yan YU7, Xian-ying WANG7, Bo ZHANG1(
), Yu QIN2,3,4(
)
Received:2024-07-17
Revised:2024-08-08
Online:2025-06-20
Published:2025-04-03
Contact:
Bo ZHANG,Yu QIN
摘要:
物种多样性是维持祁连山草地生态系统功能,进而保障祁连山生态屏障作用的基础。目前关于祁连山高寒草地植物功能群物种多样性与生产力维持机制的研究较为匮乏。本研究基于2023年7月中下旬在祁连山国家公园青海片区7种典型高寒草地的无人机航拍-地面协同调查,分析了不同高寒草地的植物群落特征,阐明了植物功能群物种丰富度和地上生物量的特性,揭示了功能群物种多样性对生产力的影响机制。结果表明:1)高寒荒漠植被高度显著高于其他类型草地,但是山地草甸植被盖度、物种丰富度和地上生物量在7种草地中最高,分别为91.73%、16种和179.19 g·m-2,高寒沼泽草甸的植株密度最高,达到了4111株·m-2。2)杂类草是多种高寒草地的主要功能群,在山地草甸中杂类草物种丰富度高达8种,约占其总物种丰富度的50%;高寒沼泽草甸中莎草科贡献了地上生物量总量的90%以上,但是在高寒草甸、高寒草甸草原、高寒草原呈现出莎草科逐渐减少而禾本科增多的特征;高寒荒漠和高寒荒漠草原仅有2~3种功能群,物种少且生产力较低。3)高寒草地群落和功能群物种丰富度与地上生物量的关系总体上呈正相关,表明维持高寒草地植物功能群物种多样性有利于生态系统生产力的提高。
罗顺华, 刘新宇, 孟宝平, 陈璇黎, 胡仁杰, 于红妍, 王贤颖, 张勃, 秦彧. 祁连山国家公园高寒草地功能群多样性与生产力研究[J]. 草业学报, 2025, 34(6): 14-26.
Shun-hua LUO, Xin-yu LIU, Bao-ping MENG, Xuan-li CHEN, Ren-jie HU, Hong-yan YU, Xian-ying WANG, Bo ZHANG, Yu QIN. A study of functional group diversity and productivity of alpine grassland in Qilian Mountain National Park[J]. Acta Prataculturae Sinica, 2025, 34(6): 14-26.
图1 研究区位置及样地分布基于自然资源部标准地图服务网站GS(2019)1822号标准地图制作,底图边界无修改。The map was based on the standard map service website of the Ministry of Natural Resources with the drawing review NO. GS (2019)1822, and the base map borders was not modified.
Fig.1 The location of study region and the distribution of observation plot
图2 不同类型高寒草地植物群落特征AD: 高寒荒漠Alpine desert; ADG: 高寒荒漠草原Alpine desert grassland; AM: 高寒草甸Alpine meadow; AMSt: 高寒草甸草原Alpine meadow steppe; AS: 高寒草原Alpine steppe; ASwM: 高寒沼泽草甸Alpine swamp meadow; MM: 山地草甸Mountain meadow. 灰色实心点表示所有样方的观测值,黑色实心点表示平均值,三角形表示离群值。不同小写字母表示不同草地类型平均值在0.05水平差异显著。下同。Solid gray dots represent the observed values of all quadrats, solid black dots represent the mean values, and triangles represent outliers. Different lowercase letters indicate the significant differences among the mean values of different grassland types at the level of 0.05. The same below.
Fig.2 Plant community characteristics of different types of alpine grassland
图3 不同类型高寒草地植物功能群丰富度误差棒表示±标准误,下同。The error bar means ± standard error, the same below.
Fig.3 Plant functional groups richness in different types of alpine grassland
图4 高寒草地植物功能群物种丰富度和地上生物量(a): 高寒草地系统Alpine grassland system; (b): 高寒荒漠Alpine desert; (c): 高寒荒漠草原Alpine desert grassland; (d): 高寒草甸Alpine meadow; (e): 高寒草甸草原Alpine meadow steppe; (f): 高寒草原Alpine steppe; (g): 高寒沼泽草甸Alpine swamp meadow; (h): 山地草甸Mountain meadow. 下同The same below. For: 杂类草Forbs; Gra: 禾本科Grasses; Leg: 豆科Legumes; Poi: 毒害草Poisonous-weeds; Sed: 莎草科Sedges; Shr: 灌木Shrubs. 不同小写字母表示同类型草地不同功能群平均值在0.05水平差异显著。Different lowercase letters indicate the significant differences among the mean value of different functional groups of the same type grassland at the level of 0.05.
Fig.4 Species richness and aboveground biomass of plant functional groups in alpine grassland
图5 高寒草地植物群落物种丰富度和功能群丰富度与其地上生物量的关系XT: 高寒草地系统Alpine grassland system.
Fig.5 Relationship between species richness and functional group richness of plant communities and aboveground biomass in alpine grassland
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