Lili Fan, Shuanglin Chen, Ziwu Guo, Ruicai Hu, Liangjin Yao
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引用次数: 0
摘要
背景:竹林的扩展增加了茶园生态系统的环境异质性,影响了土壤特性和微生物群落。了解这些影响对于发展可持续竹林管理和维持茶园生态平衡至关重要:方法:我们通过建立五种地块类型:纯竹林区(BF)、竹林界面区(BA)、混交林界面区(MA)、混交林中心区(TB)和纯茶园区(TF),研究了竹林持续扩展到茶园的影响。我们对土壤化学性质进行了全面分析,并利用 Illumina 测序技术分析了微生物群落的组成和多样性,强调了它们对竹子扩繁的反应。结果:(1)竹子扩繁显著提高了土壤 pH 值,并增加了有机质、氮和磷的含量,这在 BA 和 MA 地点尤为明显。在 TB 地点,土壤养分的改善在统计上与纯茶园地区没有区别。(2)竹子的连续生长导致土壤细菌多样性的显著变化,在 BA 和 TF 地点尤为明显,而真菌多样性未受影响。(3)竹林的扩展极大地改变了含量较少的细菌和真菌群落的组成,这些群落对土壤化学性质的变化更为敏感:结论:竹林扩张会显著改变土壤 pH 值和养分特征,影响茶园土壤细菌的多样性和组成。然而,随着竹林面积的扩大,其对茶园土壤质量的长期有益影响似乎有限。
Soil pH enhancement and alterations in nutrient and Bacterial Community profiles following Pleioblastus amarus expansion in tea plantations.
Background: The expansion of bamboo forests increases environmental heterogeneity in tea plantation ecosystems, affecting soil properties and microbial communities. Understanding these impacts is essential for developing sustainable bamboo management and maintaining ecological balance in tea plantations.
Methods: We studied the effect of the continuous expansion of Pleioblastus amarus into tea plantations, by establishing five plot types: pure P. amarus forest area (BF), P. amarus forest interface area (BA), mixed forest interface area (MA), mixed forest center area (TB), and pure tea plantation area (TF). We conducted a comprehensive analysis of soil chemical properties and utilized Illumina sequencing to profile microbial community composition and diversity, emphasizing their responses to bamboo expansion.
Results: (1) Bamboo expansion significantly raised soil pH and enhanced levels of organic matter, nitrogen, and phosphorus, particularly noticeable in BA and MA sites. In the TB sites, improvements in soil nutrients were statistically indistinguishable from those in pure tea plantation areas. (2) Continuous bamboo expansion led to significant changes in soil bacterial diversity, especially noticeable between BA and TF sites, while fungal diversity was unaffected. (3) Bamboo expansion substantially altered the composition of less abundant bacterial and fungal communities, which proved more sensitive to changes in soil chemical properties.
Conclusion: The expansion of bamboo forests causes significant alterations in soil pH and nutrient characteristics, impacting the diversity and composition of soil bacteria in tea plantations. However, as expansion progresses, its long-term beneficial impact on soil quality in tea plantations appears limited.
期刊介绍:
ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.