植被恢复对中国退化的温带荒漠型牧场真菌多样性和组成的影响

IF 3.9 2区 环境科学与生态学 Q1 ECOLOGY
Xuanbo Zhou, Xiaoli Wang, Yanlong Wang, Yuan Ma, Ying Liu, Yushou Ma
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引用次数: 0

摘要

温带荒漠型牧场的退化导致植被多样性和土壤养分水平下降。禁牧和人工植被重建是植被恢复的常用策略。然而,目前尚不清楚禁牧和人工植被重建的持续时间对土壤微生物的影响。因此,我们对禁牧期和人工植被重建进行了实验,以探索土壤微生物对这些措施的反应。在中国贵德县植物生长旺季进行了田间试验,以评估禁牧和人工植被重建的方法。我们建立了六个实验点,分别是禁牧十五年(P15)、位于 P15 附近的牧场(P15-CK)、禁牧八年(P8)、位于 P8 附近的牧场(P8-CK)、人工植被重建三年(A3)和位于 A3 附近的荒地(A3-CK)。结果表明,人工植被重建措施降低了植物多样性,而为期八年的禁牧措施提高了植物多样性。人工植被重建和禁牧措施导致 pH 值和总碳增加,总氮和总磷减少。人工植被重建增加了聚乳酸总脂肪酸的含量,而禁牧则导致聚乳酸总脂肪酸含量下降。人工植被重建和禁牧措施降低了子囊菌门的相对丰度和真菌多样性。此外,研究还发现,真菌群落主要受铵态氮、pH 值和总碳等土壤因子的影响,而不是受植物的影响。植被恢复会增加土壤总碳的积累,改变真菌群落的组成和多样性。人工植被重建和禁牧措施对 PLFA 总量的影响各不相同。这些发现提供了重要信息,即植被恢复促进了土壤养分积累,但降低了真菌多样性,这可以为退化的温带荒漠型牧场的恢复提供参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Vegetation restoration has an implication for fungal diversity and composition in a degraded temperate desert type rangeland of China

The degradation of temperate desert type rangeland leads to decreased vegetation diversity and soil nutrients levels. Grazing prohibition and artificial revegetation are common strategies for vegetation restoration. However, it is currently unknown the duration of grazing prohibition and artificial revegetation affect soil microorganisms. Therefore, experiments on grazing prohibition duration and artificial revegetation were conducted to explore the response of soil microorganisms to these measures. Field experiments were conducted during the peak plant growth season in Guide County, China, to evaluate methods involving grazing prohibition and artificial revegetation. We established six experimental sites, which were grazing prohibition for fifteen years (P15), grazing land located near P15 (P15-CK), grazing prohibition for eight years (P8), grazing land located near P8 (P8-CK), artificial revegetation for three years (A3), and wasteland located near A3 (A3-CK). The results showed that artificial revegetation measures decreased the plant diversity, whereas grazing prohibition for eight years increased it. Artificial revegetation and grazing prohibition measures led to an increase in pH and total carbon, and a decrease in total nitrogen and total phosphorus. The amount of total PLFA increased with artificial revegetation, whereas grazing prohibition resulted in a decrease of total PLFA. Artificial revegetation and grazing prohibition measures decrease the relative abundance of the Ascomycota phylum and the fungal diversity. In addition, the study found that fungal communities were primarily influenced by soil factors such as ammonium nitrogen, pH, and total carbon, rather than by plants. Vegetation restoration enhances the accumulation of total soil carbon and alters fungal community composition and diversity. The effects of artificial revegetation and grazing prohibition measures on the amount of total PLFA varied. These findings provide important information that vegetation restoration promotes soil nutrient accumulation but reduces fungal diversity, which can inform the restoration of degraded temperate desert type rangeland.

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来源期刊
Ecological Engineering
Ecological Engineering 环境科学-工程:环境
CiteScore
8.00
自引率
5.30%
发文量
293
审稿时长
57 days
期刊介绍: Ecological engineering has been defined as the design of ecosystems for the mutual benefit of humans and nature. The journal is meant for ecologists who, because of their research interests or occupation, are involved in designing, monitoring, or restoring ecosystems, and can serve as a bridge between ecologists and engineers. Specific topics covered in the journal include: habitat reconstruction; ecotechnology; synthetic ecology; bioengineering; restoration ecology; ecology conservation; ecosystem rehabilitation; stream and river restoration; reclamation ecology; non-renewable resource conservation. Descriptions of specific applications of ecological engineering are acceptable only when situated within context of adding novelty to current research and emphasizing ecosystem restoration. We do not accept purely descriptive reports on ecosystem structures (such as vegetation surveys), purely physical assessment of materials that can be used for ecological restoration, small-model studies carried out in the laboratory or greenhouse with artificial (waste)water or crop studies, or case studies on conventional wastewater treatment and eutrophication that do not offer an ecosystem restoration approach within the paper.
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