Effect of Phyllostachys pubescens expansion and refelling on soil food web in a Cryptomeria japonica plantation, Lushan Mountain, subtropical China

IF 2.8 3区 农林科学 Q3 ENVIRONMENTAL SCIENCES
Zhe Wang, Suqin Yu, Liqin Liao, Ke Wang, Foyi Zhang, Philip J. Murray, Qiong Wang, Wei Liu
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Abstract

Purpose

This study aimed to explore the impact of the expansion and subsequent felling of Moso bamboo (Phyllostachys pubescens), a dominant species in China's bamboo cultivation history, on both above-ground and underground soil fauna communities and the soil food web within Japanese cedar (Cryptomeria japonica) forests in Lushan Mountain, subtropical China.

Methods

We identified three distinct areas where Moso bamboo had expanded into pure Japanese cedar forests. In each area, two experimental scenarios were created: a deforestation site (DF) where Moso bamboo had intruded and was later felled, and a control site (UF) with ongoing bamboo growth. Soil fauna communities were collected using pitfall traps (above-ground soil fauna) and the Tullgren dry funnel method (underground soil fauna), while stable isotope analyses were used to determine the trophic levels of these communities.

Results

Deforestation significantly reduced the abundance of Acari, the most populous taxon, as well as Collembola, Diptera, and Diptera larvae. Above-ground Hymenoptera populations declined in deforested plots, while underground numbers rose. Undeforested forests supported higher densities of Coleoptera, Hymenoptera, and Arachnida. Despite similar annual biomass trends across plots, deforested areas had a greater biomass, driven by larger soil fauna. Soil total nitrogen, total phosphorus, and organic matter content increased in deforested areas and showed a strong correlation with most soil fauna, especially Diptera larvae. Following deforestation, habitat alterations have affected soil fauna's food sources, resulting in a lower trophic level for groups like Diptera, Collembola, and Hymenoptera.

Conclusion

Our study underscores the significant impact of Moso bamboo expansion and subsequent felling on the soil fauna communities and food web in Cryptomeria japonica forests. These findings highlight the need for further research into the long-term effects and recovery patterns of these ecosystems.

Abstract Image

中国亚热带庐山梭梭林扩种和改种对土壤食物网的影响
目的 本研究旨在探讨毛竹(Phyllostachys pubescens)--中国竹子栽培史上的优势物种--的扩展和随后的砍伐对中国亚热带庐山杉木(Cryptomeria japonica)林内地上和地下土壤动物群落以及土壤食物网的影响。在每个区域,我们都创建了两个实验场景:一个是毛竹入侵后被砍伐的毁林点(DF),另一个是毛竹持续生长的对照点(UF)。使用坑式陷阱(地上土壤动物群落)和图尔格伦干漏斗法(地下土壤动物群落)收集土壤动物群落,并使用稳定同位素分析确定这些群落的营养级。毁林地块的地上膜翅目昆虫数量下降,而地下数量上升。未砍伐森林中的鞘翅目、膜翅目和蛛形纲昆虫密度较高。尽管各地块的年生物量趋势相似,但森林砍伐区域的生物量更大,这是由于土壤中的动物数量更多。森林砍伐区的土壤总氮、总磷和有机质含量增加,并与大多数土壤动物,尤其是双翅目幼虫表现出很强的相关性。森林砍伐后,栖息地的改变影响了土壤动物的食物来源,导致双翅目、鞘翅目和膜翅目等类群的营养级降低。这些发现强调了进一步研究这些生态系统的长期影响和恢复模式的必要性。
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来源期刊
Journal of Soils and Sediments
Journal of Soils and Sediments 环境科学-土壤科学
CiteScore
7.00
自引率
5.60%
发文量
256
审稿时长
3.5 months
期刊介绍: The Journal of Soils and Sediments (JSS) is devoted to soils and sediments; it deals with contaminated, intact and disturbed soils and sediments. JSS explores both the common aspects and the differences between these two environmental compartments. Inter-linkages at the catchment scale and with the Earth’s system (inter-compartment) are an important topic in JSS. The range of research coverage includes the effects of disturbances and contamination; research, strategies and technologies for prediction, prevention, and protection; identification and characterization; treatment, remediation and reuse; risk assessment and management; creation and implementation of quality standards; international regulation and legislation.
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