垃圾类型和厚度调节了Cunninghamia lanceolata的微气候和苗木机构
Bo Liu1,2, Zhengning Wang1,2, Lixin Wang3
1College of Life Sciences, Qufu Normal University, Qufu, Shandong, China.
Frontiers in plant science
|March 16, 2026
概括
垃圾类型和厚度显著影响森林微气候和苗木生长. 适度的 litter 覆盖有利于幼苗的出现和生存,而过度的数量可能是有害的.
科学领域:
- 森林生态 森林生态
- 植物生理学 植物生理学
- 土壤科学 土壤科学
背景情况:
- 垃圾覆盖对于通过改变微气候来调节幼苗生长至关重要.
- 垃圾类型和垃圾厚度对森林再生的综合影响尚不清楚.
- 了解这些相互作用对于有效的森林管理至关重要.
研究的目的:
- 调查不同种类的 (宽叶,针,混合) 和厚度如何影响微气候.
- 评估子调节的微气候对*Cunninghamia lanceolata*幼苗的早期表现的影响.
- 为管理亚热带种植园林地底条件提供实用见解.
主要方法:
- 用三种类型 (*Schima superba*, *Cunninghamia lanceolata*,混合物) 和四个厚度级 (0800 g·m−2) 进行了盆栽实验.
- 监测的微气候变量包括土壤温度,土壤湿度,光合作用光子流量密度 (PPFD) 和红与远红的比率 (R:Fr).
- 种子的出现,存活,形态和生物量被测量以评估性能.
主要成果:
- 垃圾覆盖显著改变了微气候,减少了PPFD和R:Fr,同时缓冲了土壤温度并增加了土壤水分.
- 宽叶垃圾对微气候的影响比针垃圾更大.
- 幼苗的出现和生存被薄到中等的杂草覆盖所增强,但被厚厚的覆盖所抑制,特别是宽叶杂草. 苗木表现出避免阴影的反应,高度增加和生物质分配改变.
结论:
- 垃圾类型和厚度非线性地影响微气候和苗木再生动态.
- 适度的垃圾积累可以促进幼苗的生长,而过量的垃圾则会抑制种子的生长.
- 这些发现为优化亚热带针叶树种植园的森林地板管理提供了指导.
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