放牧对沿沙丘稳定梯度的主导灌木和地下植被之间的关系的影响
Tiantian Zhu1, Wenxu Cao1, Xu Li1
1State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China.
PloS one
|November 8, 2024
概括
在沙丘恢复期间,放牧增强了卡拉加纳微灌木和底层植物之间的促进关系. 然而,沙丘的稳定性增加减少了灌木促进底层植物多样性的作用.
科学领域:
- 生态学研究 生态学研究
- 植物社区的动态.
- 沙丘恢复生态学沙丘恢复生态学
背景情况:
- 了解植物物种相互作用对于沙丘植被恢复至关重要.
- 在牧场下灌木底层相互作用的证据是有限的.
研究的目的:
- 研究牧场和沙丘稳定如何影响卡拉加纳微和底层植被之间的关系.
- 为了比较表现指标和互动指数,在牧场和围下.
主要方法:
- 在不同沙丘稳定阶段建立了围.
- 评估底层植被表现 (丰富度,生物量) 和相互作用指数.
- 在放牧和围条件下比较结果.
主要成果:
- 卡拉加纳微 (Caragana microphylla) 促进了底层植物的生长,随着沙丘的稳定性而增加了促进性,并且在放牧下更强大.
- 沙丘稳定性增加减少了C. microphylla促进了地下树木多样性,但不是生物量.
- 放牧增加了一年生和多年生植物的丰富性,但减少了总体生物量.
结论:
- 牧场在沙丘生态系统中显著影响灌木底层的相互作用.
- 特定生命形式对放牧和稳定的反应是沙丘恢复成功的关键.
- 管理策略应考虑牧场和沙丘的稳定性,以有效地恢复植被.
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