Effects of Climatic Factors on Body Weight and Stable Carbon and Nitrogen Isotopes in Muscle Tissue of Orientallactaga sibirica

doi:10.11733/j.issn.1007-0435.2026.01.016

Acta Agrestia Sinica ›› 2026, Vol. 34 ›› Issue (1): 163-171.DOI: 10.11733/j.issn.1007-0435.2026.01.016

Effects of Climatic Factors on Body Weight and Stable Carbon and Nitrogen Isotopes in Muscle Tissue of Orientallactaga sibirica

Burenqiqige^1,2,3, YE Guo-hui^1,2,3, CHEN Guo-kang^1,2,3, SUN Shan-Shan^1,2,3, LI Xin^1,2,3, YANG Wen-lei⁴, FU He-ping^1,2,3, YUAN Shuai^1,2,3

1. College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010011, China;
2. Key Laboratory of Grassland Rodent Ecology and Rodent Pest Control at Universities of Inner Mongolia Autonomous, Hohhot, Inner Mongolia 010011, China;
3. Key Laboratory of Grassland Resources, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010011, China;
4. Aolezhaoqi Town People's Government of Otog Front Banner, Ordos, Inner Mongolia 016100, China

Received:2025-02-08 Revised:2025-03-30 Published:2025-12-24

气候因子对五趾跳鼠体重和肌肉组织碳氮稳定同位素的影响

布仁其其格^1,2,3, 叶国辉^1,2,3, 陈国康^1,2,3, 孙珊珊^1,2,3, 李鑫^1,2,3, 杨文蕾⁴, 付和平^1,2,3, 袁帅^1,2,3

1. 内蒙古农业大学草业学院, 内蒙古呼和浩特 010011;
2. 草地啮齿动物生态学与鼠害控制自治区高等学校重点实验室, 内蒙古呼和浩特 010011;
3. 内蒙古农业大学草地资源教育部重点实验室, 内蒙古呼和浩特 010011;
4. 鄂托克前旗敖勒召其镇人民政府, 内蒙古鄂尔多斯 016100

通讯作者: 袁帅,E-mail:yuanshuai2020@163.com;付和平,E-mail:fuheping@126.com
作者简介:布仁其其格（1998-），女，蒙古族，内蒙古兴安盟人，硕士研究生，主要从事啮齿动物生态学与草地保护方面的研究，E-mail:qiqige19981130@163.com ；
基金资助:
国家自然科学基金项目（No.32060256，32060395）；内蒙古自治区科技重大专项（No.2021ZD0006）；内蒙古自治区科技计划项目（No.2021GG0108）；内蒙古自治区青年科技人才发展计划（No.NJYT22044）；内蒙古自治区直属高校基本科研业务费（No.BR22-13-07、BR220106、BR221037）；草原生态保护修复治理补助（RK2300002632）资助

Abstract

Abstract: Rainfall， temperature， and habitat resources are essential for the survival of animals in arid ecosystems， but the responses of the same species to these factors on a larger spatial scale are not clear. Orientallactaga sibirica is a widely distributed rodent in arid areas， and its living conditions can sensitively reflect climate change and habitat resource changes. It is of great significance to reveal the environmental adaptability of small mammals by studying the effects of environmental changes on the body size of O. sibirica. In this study， from June to August 2019， samples were collected by net capture method in the main distribution area of the O. sibirica. The body weight was weighed， and the δ¹³C and δ¹⁵N values of muscle tissue were measured. The effects of annual average temperature， annual precipitation and normalized difference vegetation index （NDVI） on these indicators were explored. The results showed that the body weight of O. sibirica decreased significantly with the increase of annual average temperature （P<0.01）. The annual precipitation was significantly negatively correlated with the δ¹³C and δ¹⁵N of muscle tissue （P<0.01）. The segmented structural equation model analysis showed that the annual precipitation had a significant negative effect on the body weight of O. sibirica through NDVI and δ¹³C and δ¹⁵N （P<0.05）. Thus， the body weight and feeding habits of O. sibirica adaptively adjusted with habitat changes.

Key words: Orientallactaga sibirica, Stable isotope, Mean annual temperature, Annual precipitation, NDVI

摘要： 水、热和食物资源对干旱生态系统中的动物生存至关重要，但同一物种在较大空间尺度上对上述因子的响应过程尚不明确。五趾跳鼠（Orientallactaga sibirica）作为干旱区广泛分布的啮齿动物，其生存状况能敏感地反映气候变化和生境资源变化。研究环境变化对五趾跳鼠体型的影响，对于揭示小型哺乳动物的环境适应性具有重要意义。本研究于2019年6—8月，在五趾跳鼠主要分布区，以网捕法采集样本，称量体重，测定肌肉组织δ¹³C和δ¹⁵N值，探究年均温、年降水量和归一化植被指数（Normalized difference vegetation index， NDVI）对这些指标的影响。结果表明：随年均温上升，五趾跳鼠体重极显著降低（P<0.01）；年降水量与肌肉组织的δ¹³C和δ¹⁵N呈极显著负相关（P<0.01）。分段结构方程模型分析显示，年降水量通过NDVI和δ¹³C，δ¹⁵N对五趾跳鼠体重具有显著负向影响（P<0.05）。可见，五趾跳鼠体重及摄食随栖息地变化而进行适应性调整。

关键词: 五趾跳鼠, 稳定同位素, 年均温度, 年降水量, NDVI指数

CLC Number:

S812.6

Burenqiqige, YE Guo-hui, CHEN Guo-kang, SUN Shan-Shan, LI Xin, YANG Wen-lei, FU He-ping, YUAN Shuai. Effects of Climatic Factors on Body Weight and Stable Carbon and Nitrogen Isotopes in Muscle Tissue of Orientallactaga sibirica[J]. Acta Agrestia Sinica, 2026, 34(1): 163-171.

布仁其其格, 叶国辉, 陈国康, 孙珊珊, 李鑫, 杨文蕾, 付和平, 袁帅. 气候因子对五趾跳鼠体重和肌肉组织碳氮稳定同位素的影响[J]. 草地学报, 2026, 34(1): 163-171.

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Effects of Climatic Factors on Body Weight and Stable Carbon and Nitrogen Isotopes in Muscle Tissue of Orientallactaga sibirica

气候因子对五趾跳鼠体重和肌肉组织碳氮稳定同位素的影响

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