Diameter Class-Dependent Species-Specific Tree-Soil Feedback 与土壤质量相关的直径类-取决于物种-特定的树木-土壤反 在 Cunninghamia lanceolata
Gang Lei1,2, Yang Yang1,2, Wenting Li1,2
1International Center for Bamboo and Rattan, Beijing 100102, China.
Plants (Basel, Switzerland)
|February 13, 2026
概括
树木的大小和种类显著影响亚热带土壤质量. 较大的Quercus fabri树比Cunninghamia lanceolata树更能改善土壤,而较小的C. lanceolata树对土壤的健康更好.
科学领域:
- 生态生态学 生态生态学
- 林业 林业 林业 林业 林业
- 土壤科学 土壤科学
背景情况:
- 树木生物质和土壤微生物息地对于亚热带森林的运作至关重要.
- 对特定物种和特定阶段的树木土壤相互作用的研究不足.
研究的目的:
- 在主要的亚热带物种 (*Cunninghamia lanceolata*和 *Quercus fabri*) 中量化树木土壤相互作用.
- 分析树木直径与乳房高度 (DBH) 以及物种身份如何影响土壤质量.
主要方法:
- 通过使用16个参数的土壤质量指数 (SQI) 评估土壤质量.
- 采用随机森林模型来确定生物质的重要性.
- 检查了5个DBH类 (5-30厘米) 的相互作用.
主要成果:
- 土壤特性和酶活性因DBH类和物种而异.
- *C. lanceolata*显示了一个单模SQI模式,而*Q. fabri*显示了一个一致的增加.
- 物种身份和DBH类共同影响了SQI,大尺寸的*Q. fabri*占主导地位,小尺寸的*C. lanceolata*占主导地位.
结论:
- DBH的大小和物种身份是亚热带土壤微环境的关键驱动因素.
- 这些发现为管理亚热带森林提供了机制的基础.
- 地上生物质对*C. lanceolata*的影响更大,而地下生物质对*Q. fabri*的影响更大.
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