混合放牧对高寒草地矮生嵩草生殖枝与营养枝性状的影响

doi:10.11733/j.issn.1007-0435.2022.09.001

草地学报 ›› 2022, Vol. 30 ›› Issue (9): 2231-2238.DOI: 10.11733/j.issn.1007-0435.2022.09.001

• 生态与草原修复 • 下一篇

混合放牧对高寒草地矮生嵩草生殖枝与营养枝性状的影响

刘文亭, 王芳草, 杨晓霞, 刘玉祯, 冯斌, 俞旸, 张春平, 曹铨, 董全民

青海大学畜牧兽医科学院, 青海省畜牧兽医科学院, 青海省高寒草地适应性管理重点实验室, 青海西宁 810016

收稿日期:2022-03-15 修回日期:2022-05-06 出版日期:2022-09-15 发布日期:2022-09-30
通讯作者: 董全民,E-mail:qmdong@qhu.edu.cn
作者简介:刘文亭(1990-),男,汉族,内蒙古呼和浩特人,博士,主要从事草地生态与环境保护研究,E-mail:qhdxlwt@163.com
基金资助:
青海省科技基础条件平台项目（2020-ZJ-T07）；国家自然科学基金项目（U20A2007，32160340）共同资助

Effects of the Traits of Reproductive and Vegetative Branches of Kobresia humilis under Different Herbivore Assemblage Grazing in Alpine Grassland

LIU Wen-ting, WANG Fang-cao, YANG Xiao-xia, LIU Yu-zhen, FENG Bin, YU Yang, ZHANG Chun-ping, CAO Quan, DONG Quan-min

Academy of Animal Science and Veterinary Medicine, Qinghai University, Qinghai Provincial Key Laboratory of Adaptive Management on Alpine Grassland, Xining, Qinghai Province 810016, China

Received:2022-03-15 Revised:2022-05-06 Online:2022-09-15 Published:2022-09-30

摘要/Abstract

摘要： 本研究依托高寒草地-家畜系统适应性管理技术平台，通过研究建群种矮生嵩草（Kobresia humilis）叶片宏观性状、资源投入和生殖枝、营养枝潜在关系，以期揭示矮生嵩草种群在中度放牧强度下对放牧方式调控的响应机理。结果表明：牦牛藏羊放牧比例1：6处理矮生嵩草营养枝高度、数量、重量显著高于牦牛藏羊放牧比例1：4处理和牦牛单独放牧处理；单位长度矮生嵩草营养枝重量、生殖枝重量均不受放牧方式影响，且单位长度营养枝重量与单位长度生殖枝重量呈正相关关系；个体生殖枝、营养枝特征呈现协同变化关系，营养枝重量会显著影响营养枝数量，生殖枝数量显著影响生殖枝重量。综上所述，放牧干扰下矮生嵩草在生殖枝和营养枝的资源投入上不存在权衡关系，而是通过增加单位长度的生殖枝、营养枝资源投入量来提高资源分配模式。

关键词: 高寒草地, 矮生嵩草, 中度放牧, 混合放牧, 资源投入

Abstract: Based on the adaptive management technology platform of the alpine grassland-livestock system, in order to reveal the response mechanism of Kobresia humilis population to the regulation of grazing mode, this research studied the traits of leaves, resource input and the potential relationship between reproductive branches and vegetative branches of K. humilis. The results showed that:the height, number, and weight of vegetative branches of K. humilis in Yak:Tibetan sheep as 1:6 grazing treatment were significantly higher than those in Yak:Tibetan sheep as 1:4 grazing treatment, single Yak or Tibetan sheep grazing treatment. The vegetative branch weight and reproductive branch weight per unit length of K. humilis were not affected by grazing, and there was a positive correlation between vegetative branch weight per unit length and reproductive branch weight per unit length. The characteristics of individual reproductive branches and vegetative branches showed a cooperative relationship, and the weight of vegetative branches significantly affected the number of vegetative branches, and the number of reproductive branches significantly affected the weight of reproductive branches. In summary, this study suggests that under grazing disturbance, there is no trade-off between the resource input of the reproductive branch and vegetative branch. Kobresia humilis improves the resource allocation by increasing the resource input of the reproductive branch and vegetative branch per unit length.

Key words: Alpine grassland, Kobresia humilis, Moderate grazing, Herbivore assemblage grazing, Resource input

中图分类号:

S812

刘文亭, 王芳草, 杨晓霞, 刘玉祯, 冯斌, 俞旸, 张春平, 曹铨, 董全民. 混合放牧对高寒草地矮生嵩草生殖枝与营养枝性状的影响[J]. 草地学报, 2022, 30(9): 2231-2238.

LIU Wen-ting, WANG Fang-cao, YANG Xiao-xia, LIU Yu-zhen, FENG Bin, YU Yang, ZHANG Chun-ping, CAO Quan, DONG Quan-min. Effects of the Traits of Reproductive and Vegetative Branches of Kobresia humilis under Different Herbivore Assemblage Grazing in Alpine Grassland[J]. Acta Agrestia Sinica, 2022, 30(9): 2231-2238.

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混合放牧对高寒草地矮生嵩草生殖枝与营养枝性状的影响

Effects of the Traits of Reproductive and Vegetative Branches of Kobresia humilis under Different Herbivore Assemblage Grazing in Alpine Grassland

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