沙漠草原植物群落的结构和功能之间的关系
Shijie Lv1, Zihan Wang1, Baolong Yan2
1College of Grassland Science/Key Laboratory of Grassland Resources of the Ministry of Education/Inner Mongolia Key Laboratory of Grassland Management and Utilization/Key Laboratory of Forage Cultivation, Processing and High Efficient Utilization of the Ministry of Agriculture, Inner Mongolia Agricultural University, Hohhot, 010011, P. R. China.
BMC plant biology
|October 17, 2024
概括
放牧养殖率对沙漠草原植物群落产生重大影响. 在这些生态系统中,结构稳定性比功能稳定性更为重要,为未来的生态系统稳定性研究提供了信息.
科学领域:
- 生态生态学 生态生态学
- 植物社区动态 植物社区动态
- 生态系统稳定性 生态系统稳定性
背景情况:
- 了解植物社区的动态需要评估空间和时间结构和功能.
- 本研究检查了植物群落在沙漠草原中不同种群率下的结构和功能稳定性.
- 16年的放牧期为研究这些生态反应提供了背景.
研究的目的:
- 研究植物群体的结构和功能稳定性对不同种植率的反应.
- 分析跨空间和时间尺度的结构和功能稳定性之间的关系.
- 确定沙漠草原生态系统在放牧压力下结构与功能稳定的相对意义.
主要方法:
- 利用经典的统计方法来分析植物群体的定量特征.
- 随着时间 (2014-2019年) 和空间 (2017-2019年) 的推移,根据四种养殖率 (控制,轻,中等,重放牧) 收集的数据.
- 研究了Stipa breviflora沙漠草原植物群体的结构和功能稳定性之间的相互作用.
主要成果:
- 在空间尺度上,轻度放牧 (LG) 的结构稳定性最高,中度放牧 (MG) 的结构稳定性最低. 功能稳定性在MG下最高,在重放牧 (HG) 下最低.
- 在时间尺度上,MG表现出最高的结构稳定性,而LG是最低的. 功能稳定性在LG下最高,在HG下最低.
- 库存率对空间尺度上的结构稳定性和时间尺度上的功能稳定性产生了更大的影响,功能稳定性对库存率的反应更大.
结论:
- 养殖率的干扰显著影响了沙漠草原生态系统.
- 在这种生态系统中,植物群落的结构稳定性比功能稳定性更为重要.
- 这些发现为了解和管理在牧草沙漠环境中的生态系统稳定性提供了基础.
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