<br>毛竹 (Phyllostachys edulis) 的扩张可提高土壤 pH 值并改变土壤养分和微生物群落,Science of the Total Environment

当前位置： X-MOL 学术 › Sci. Total Environ. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

毛竹 (Phyllostachys edulis) 的扩张可提高土壤 pH 值并改变土壤养分和微生物群落
Science of the Total Environment ( IF 8.2 ) Pub Date : 2023-12-12 , DOI: 10.1016/j.scitotenv.2023.169346
Yaoxing Wu ₁ , Jiahuan Guo ₂ , Zhiying Tang ₁ , Tianxiang Wang ₁ , Wenting Li ₁ , Xiaorong Wang ₃ , Hongxia Cui ₃ , Xingyi Hu ₃ , Lianghua Qi ₁

Affiliation

在全球环境关注的背景下，竹子扩张问题因其对生态系统的广泛而深刻的影响而受到广泛关注。竹子的扩张发生在世界各地的本地和引进栖息地，特别是在亚洲。然而，竹子的扩张对土壤 pH 值、养分水平和微生物群落的影响是复杂的，并且在不同的环境中存在差异。为了解决这一知识差距，我们对 81 项研究中的 2037 个配对观察结果进行了荟萃分析。结果表明，竹子膨胀后土壤pH值分别增加了6.99%（0-20 cm）和4.49%（20-40 cm）。值得注意的是，随着竹子的扩张，针叶林的土壤 pH 值上升幅度高于阔叶林。自竹林建立以来，土壤pH值随着时间的推移逐渐增加。土壤pH升高的程度与林分中竹子的比例和年平均太阳辐射显着正相关。相比之下，它与年平均气温呈显着负相关。 pH 值的升高与扩张阶段和扩张的森林类型密切相关，而不是主要由大范围的气候因素决定。我们还发现，竹子向针叶林的扩张导致总氮 (TN) 显着减少 14.14%。与原生林相比，不同的扩张阶段导致混交林和竹林的总氮分别减少了 6.88% 和 7.99%。与原生竹林相比，纯竹林铵态氮显着增加30.39%，硝态氮显着下降21.12%。此外，竹子的扩张有助于提高土壤真菌的多样性。总而言之，我们的研究结果强调，竹子的扩张会导致土壤 pH 值升高，并改变土壤氮成分和真菌微生物群落，为未来的生态保护和资源管理提供宝贵的见解。

"点击查看英文标题和摘要"

Moso bamboo (Phyllostachys edulis) expansion enhances soil pH and alters soil nutrients and microbial communities

Amid global environmental concerns, the issue of bamboo expansion has garnered significant attention due to its extensive and profound impacts on the ecosystems. Bamboo expansion occurs in native and introduced habitats worldwide, particularly in Asia. However, the effects of bamboo expansion on soil pH, nutrient levels, and microbial communities are complex and vary across different environments. To address this knowledge gap, we conducted a meta-analysis with 2037 paired observations from 81 studies. The results showed that soil pH increased by 6.99 % (0-20 cm) and 4.49 % (20-40 cm) after bamboo expansion. Notably, soil pH increased more in the coniferous forest with bamboo expansion than in the broadleaf forest. Soil pH progressively increased over time since the establishment of bamboo stands. The extent of soil pH elevation was significantly positively correlated with the proportion of bamboo within the forest stand and mean annual solar radiation. In contrast, it was significantly negatively correlated with the mean annual temperature. The elevation of pH is closely related to expansion stage and expanded forest type rather than primarily shaped by climatic factors across a large scale. We also found that bamboo expansion into coniferous forests brought about a notable 14.14 % reduction in total nitrogen (TN). Varied expansion stages resulted in TN reductions of 6.88 % and 7.99 % for mixed forests and bamboo stands, respectively, compared to native forests. Pure bamboo stands exhibited a remarkable 30.39 % increase in ammonium nitrogen and a significant 21.12 % decrease in nitrate nitrogen compared to their native counterparts. Furthermore, bamboo expansion contributed to heightened soil fungal diversity. Taken together, our findings highlight that bamboo expansion leads to an increase in soil pH and alters soil N components and fungal microbial communities, providing valuable insights for future ecological conservation and resource management.

更新日期：2023-12-12

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南