Aridity-driven shift in biodiversity-soil multifunctionality relationships.
Aridity-driven shift in biodiversity-soil multifunctionality relationships.
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DOI：
10.1038/s41467-021-25641-0
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发表时间：
2021-09-09
影响因子：
16.6
通讯作者：
Deng J
中科院分区：
文献类型：
--
作者：
Hu W;Ran J;Dong L;Du Q;Ji M;Yao S;Sun Y;Gong C;Hou Q;Gong H;Chen R;Lu J;Xie S;Wang Z;Huang H;Li X;Xiong J;Xia R;Wei M;Zhao D;Zhang Y;Li J;Yang H;Wang X;Deng Y;Sun Y;Li H;Zhang L;Chu Q;Li X;Aqeel M;Manan A;Akram MA;Liu X;Li R;Li F;Hou C;Liu J;He JS;An L;Bardgett RD;Schmid B;Deng J
生物多样性与多种生态系统功能（即生态系统多功能性）之间的关系取决于具体情况。据报道，植物和土壤微生物多样性调节生态系统的多功能性，但它们的相对重要性如何沿着环境梯度变化仍然知之甚少。在这里，我们将中国北方4，000公里干旱梯度上沿着130个旱地地点的植物和微生物多样性与土壤多功能性联系起来。我们的研究结果表明，植物物种丰富度和土壤的多功能性在干旱程度较低的地区，而微生物多样性，特别是真菌，是正相关的多功能性在较干旱的地区。这种植物或微生物多样性与土壤多功能性之间关系的转变发生在干旱度0.8的水平上，这是半干旱和干旱气候之间的边界，预计到本世纪末，这一水平将在地理上提前28%。我们的研究强调，植物和土壤微生物的生物多样性损失可能会产生特别强烈的后果，在低干旱和高干旱条件下，分别要求气候特异性的生物多样性保护战略，以减轻干旱化的影响。生物多样性与生态系统功能的关系可能因气候而异。在这里，作者研究了植物和土壤微生物多样性与中国130个旱地土壤养分多功能性的关系，发现在干旱条件下，土壤微生物多样性的重要性更大。
Relationships between biodiversity and multiple ecosystem functions (that is, ecosystem multifunctionality) are context-dependent. Both plant and soil microbial diversity have been reported to regulate ecosystem multifunctionality, but how their relative importance varies along environmental gradients remains poorly understood. Here, we relate plant and microbial diversity to soil multifunctionality across 130 dryland sites along a 4,000 km aridity gradient in northern China. Our results show a strong positive association between plant species richness and soil multifunctionality in less arid regions, whereas microbial diversity, in particular of fungi, is positively associated with multifunctionality in more arid regions. This shift in the relationships between plant or microbial diversity and soil multifunctionality occur at an aridity level of ∼0.8, the boundary between semiarid and arid climates, which is predicted to advance geographically ∼28% by the end of the current century. Our study highlights that biodiversity loss of plants and soil microorganisms may have especially strong consequences under low and high aridity conditions, respectively, which calls for climate-specific biodiversity conservation strategies to mitigate the effects of aridification. Biodiversity-ecosystem functioning relationships may vary with climate. Here, the authors study relationships of plant and soil microbial diversity with soil nutrient multifunctionality in 130 dryland sites in China, finding a shift towards greater importance of soil microbial diversity in arid conditions.