The Impact of Stellera chamaejasme Expansion on Plant Community of Typical Steppe in Inner Mongolia

doi:10.11733/j.issn.1007-0435.2026.07.034

Acta Agrestia Sinica ›› 2026, Vol. 34 ›› Issue (7): 2730-2740.DOI: 10.11733/j.issn.1007-0435.2026.07.034

The Impact of Stellera chamaejasme Expansion on Plant Community of Typical Steppe in Inner Mongolia

CHEN Yi-hao¹, GUO Na², HAO Li-fen¹, LI Yu-yu¹, NAMU Ri-ga³, GUO Li-zhu¹, LIN Ke-jian¹

1. Key Laboratory of Biohazard Monitoring, Green Prevention and Control for Artificial Grassland, Ministry of Agriculture and Rural Affairs, P. R. China/Inner Mongolia Key Laboratory of Grassland Protection Ecology/Grassland Research Institute, Chinese Academy of Agricultural Science, Hohhot, Inner Mongolia 010010, China;
2. Fujian Provincial Higher Education Engineering Research Center for Biomedicine and Health, Fuzhou, Fujian Province 351000, China;
3. Xilingol League Grassland Workstation, Xilinhot, Inner Mongolia 026000, China

Received:2025-09-28 Revised:2025-11-21 Published:2026-07-02

狼毒扩张对内蒙古典型草原植被群落特征的影响

陈艺豪¹, 郭娜², 郝丽芬¹, 李宇宇¹, 娜木日嘎³, 郭丽珠¹, 林克剑¹

1. 农业农村部人工草地生物灾害监测与绿色防控重点实验室/内蒙古自治区草原保护生态学重点实验室/中国农业科学院草原研究所, 内蒙古呼和浩特 010010;
2. 福建生物工程职业技术学院, 福建福州 351000;
3. 锡林郭勒盟草原工作站, 内蒙古锡林浩特 026000

通讯作者: 郭丽珠，E-mail:ellenguo@sina.cn;郭丽珠，E-mail:linkejian@caas.cn
作者简介:陈艺豪（2000-），男，汉族，内蒙古通辽人，硕士研究生，主要从事草地生态研究，E-mail:1763418421@qq.com;郭娜（1986-），女，汉族，福建龙岩人，硕士研究生，主要从事中药资源开发与利用研究，E-mail:gn19860908@163.com
基金资助:
国家自然基金（32401495）；国家重点研发计划项目（2023YFD1400505）资助

Abstract

Abstract: The expansion of Stellera chamaejasme is an important indicator of steppe degradation， which markedly alters the structure and function of steppe community. In this study， the natural typical steppe in West Ujimqin Banner， Xilingol League was selected as the research object， and the differences in community characteristics among S. chamaejasme-dominated degraded steppe （SS）， non-S. chamaejasme-dominated degraded steppe （NS） and undegraded steppe （CK） were compared. The results showed that：（1） Steppe degradation reduced community height and coverage， while the community height of SS was higher than that of NS， and the aboveground biomass of SS was significantly higher than that of CK and NS. （2） The species richness and diversity indices of NS were lower than those of SS， and a community dominated by Cleistogenes squarrosa was formed in NS. （3） There were no significant differences in the cumulative dominance of dominant families and functional groups between the two types of degraded grasslands. However， in terms of the percentage composition of functional groups， perennial graminoids （Pg） dominated in NS， while perennial forbs （Pf） accounted for the highest proportion in SS. In summary， the expansion of Stellera chamaejasme induced changes in community composition and species reduction， but it maintained community diversity and a relatively high level of aboveground biomass， indicating that the corresponding communities might be in an “alternative steady state”. Therefore， the restoration strategies for Stellera chamaejasme-dominated degraded grasslands should be distinguished from other types of degraded grasslands.

Key words: Stellera chamaejasme, Grassland degradation, Community structure, Diversity index, Plant functional groups

摘要： 狼毒（Stellera chamaejasme）扩张是草原退化的重要标志，显著改变草原群落结构与功能。本研究以锡林郭勒盟西乌珠穆沁旗天然典型草原为对象，对比狼毒型退化草原（SS）、非狼毒型退化草原（NS）与未退化草原（CK）的群落特征差异。结果显示：（1）草原退化降低群落高度和盖度，但SS群落高度高于NS，同时SS地上生物量显著高于CK和NS；（2）NS物种数量及多样性指数低于SS，且形成以糙隐子草（Cleistogenes squarrosa）为优势种的群落；（3）两种退化草原优势科与功能群累积优势度无显著差异，但在功能群组成百分比中NS以多年生禾草（Pg）为主，SS中多年生杂类草（Pf）占比最高。综上，狼毒扩张虽然导致了群落组成发生变化和物种减少，却维持了群落多样性与较高地上生物量，其群落可能处于“替代稳态”。因此，狼毒型退化草原的恢复策略需区别于其他退化类型草原。

关键词: 狼毒, 草原退化, 群落结构, 多样性指数, 植物功能群

CLC Number:

S812.6

CHEN Yi-hao, GUO Na, HAO Li-fen, LI Yu-yu, NAMU Ri-ga, GUO Li-zhu, LIN Ke-jian. The Impact of Stellera chamaejasme Expansion on Plant Community of Typical Steppe in Inner Mongolia[J]. Acta Agrestia Sinica, 2026, 34(7): 2730-2740.

陈艺豪, 郭娜, 郝丽芬, 李宇宇, 娜木日嘎, 郭丽珠, 林克剑. 狼毒扩张对内蒙古典型草原植被群落特征的影响[J]. 草地学报, 2026, 34(7): 2730-2740.

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The Impact of Stellera chamaejasme Expansion on Plant Community of Typical Steppe in Inner Mongolia

狼毒扩张对内蒙古典型草原植被群落特征的影响

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