高的营养利用率和再吸收效率促进了竹子的扩张和入侵
Keyi Zuo1, Lili Fan1, Ziwu Guo1
1Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, 311400, China.
Journal of environmental management
|June 5, 2024
概括
竹子入侵树木种植园减少了叶子中的碳,和. 高度的营养使用和再吸收效率推动了竹子的扩张,影响了森林生态系统.
科学领域:
- 森林生态 森林生态
- 植物生理学 植物生理学
- 侵入性物种 生物学 生物学
背景情况:
- 竹子是侵入性木质植物,侵入树木种植园,形成混合种群.
- 竹子入侵对营养循环,特别是碳 (C), (N) 和 (P) 的影响尚不清楚.
研究的目的:
- 为了研究竹子入侵如何影响叶子C,N和P度,度和混合种植园的利用模式.
- 分析N和P利用和吸收在竹子扩张中的作用.
主要方法:
- 研究了四种侵袭中国松树种植园的Pleioblastus amarus种群.
- 对年轻和老竹子的成熟和枯的叶子进行分析,以测定C,N和P度,并进行静脉测量.
- 使用部分最小平方路径建模 (PLS-PM) 评估了N和P再吸收效率和全度增长关系.
主要成果:
- 竹子入侵降低了叶子中的C,N和P度,并改变了C:N和C:P的比率.
- 叶子C,N和P的N和P再吸收效率和全米增长指数因竹子入侵而降低.
- PLS-PM证实了竹子入侵对叶子营养度和N和P利用/再吸收的负面影响.
结论:
- 竹子中高的N和P利用率和再吸收效率有助于它们的扩张和侵入树木种植园.
- 了解营养动态对于管理竹树混合种群和控制侵袭性竹子传播至关重要.
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