在景观尺度上，人类活动改变了土壤微生物多样性-功能关系

IF 3.9 2区农林科学 Q1 AGRONOMY Plant and Soil Pub Date : 2024-12-31 DOI:10.1007/s11104-024-07174-9

Shenglei Hao, Zewen Hei, Jiayang Ma, Qi Shao, Tingyao Cai, Hang-Wei Hu, Manuel Delgado-Baquerizo, Yongliang Chen

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引用次数: 0

摘要

背景与目的在自然生态系统中，土壤微生物对多种生态系统功能的调节起着至关重要的作用。然而，土地利用类型对土壤微生物多样性与土壤多功能性之间关系的影响在景观水平上的评价甚少。方法采用高分辨率野外调查方法，对平谷地区228个样点（每个样点2 × 2 km2）进行调查，探讨4种土地利用方式对土壤微生物多样性（细菌、真菌和原生生物）与SMF关系的影响。结果果园和天然林土壤微生物多样性指数和多功能化程度均高于人工林和农田。土壤微生物多样性指数与土壤有机质丰度在不同土地利用方式和天然林中呈显著正相关。然而，这种关系在农田、果园和种植园中是分离的。生态网络中模块丰富度的增加也是SMF的重要预测因子，特别是在农田和果园中。结论土地利用类型对改变土壤微生物多样性与功能基本关系的影响提供了新的认识。

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Soil microbial diversity-function relationships are changed by human activity at a landscape scale

Background and Aims

Soil microorganisms are crucial contributors to the regulation of diverse ecosystem functions in natural ecosystems. However, the influence of land use types on the relationships between soil microbial diversity and soil multifunctionality (SMF) has been scarcely evaluated at a landscape level.

Methods

A high-resolution field survey was undertaken with 228 sites (2 × 2 km² grid each) to investigate the influence of four land uses on the relationship between soil microbial diversity (bacteria, fungi and protists) and SMF in Pinggu District, China.

Results

Soil microbial diversity index and multifunctionality were the highest in orchards and natural forests compared to plantations and cropland. Also, while soil microbial diversity index and SMF were positively correlated across all land uses and in natural forests. However, this relationship was decoupled within cropland, orchards and plantations. Increases in module richness within ecological networks were also important predictors of SMF, especially in cropland and orchards.

Conclusion

This study provides new insights on the impacts of land use types in changing the fundamental relationship between soil microbial diversity and function.

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来源期刊

Plant and Soil 农林科学-农艺学

CiteScore

8.20

自引率

8.20%

发文量

543

审稿时长

2.5 months

期刊介绍： Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.