Plant-plant interactions determine natural restoration of plant biodiversity over time, in a degraded mined land.
Plant-plant interactions determine natural restoration of plant biodiversity over time, in a degraded mined land.
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DOI：
10.1002/ece3.8878
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发表时间：
2022-05
影响因子：
2.6
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中科院分区：
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恢复退化的环境对于减轻人类活动对生态系统的不利影响至关重要。植物与植物的相互作用可能为恢复退化的干旱土地提供有效的手段，但人们对这些影响知之甚少。在这方面，我们分析了两种优势护士植物的影响（即，西伯利亚蒿和阿拉伯针茅）在不同土地废弃年龄（即，控制，最近，和旧时代）在伊朗的石灰石矿网站。此外，我们考虑了两个空间尺度：i）地块尺度（即，在1 m2地块下）和ii）植被斑块尺度（即，通过Kruskal-Wallis H检验和变异分配分析，评价了保育植物的效应、土地撂荒年龄及其对生物多样性的相对重要性。我们的研究结果表明，在地块尺度上的分类，功能和系统发育多样性的增加，当考虑到存在的护士植物下的土地废弃的老年龄。这种显著差异与蒿属斑块对分类多样性和针茅斑块对功能多样性和系统发育多样性的积极影响是一致的。此外，我们发现一个更大的贡献，从护士植物比土地弃耕年龄的生物多样性变化在两个空间尺度上研究。因此，这些结果表明植物-植物相互作用在恢复植被中的重要性，它们对受益物种的存在及其功能和系统发育相关性的影响取决于应力梯度假设下的护士生活形式。我们分析了伊朗Cement-Shargh工厂不同土地废弃年龄的护理植物对社区和植被斑块尺度生物多样性方面的影响。我们的研究结果表明，根据存在的护士植物的生物多样性显着变化。这种生物多样性的显着差异与保育灌木对分类多样性的积极影响和草在植被斑块尺度上对功能和系统发育多样性的积极影响一致。
Restoration of degraded environments is essential to mitigate adverse impacts of human activities on ecosystems. Plant–plant interactions may provide effective means for restoring degraded arid lands, but little is understood about these impacts. In this regard, we analyzed the effects of two dominant nurse plants (i.e., Artemisia sieberi and Stipa arabica) on taxonomic, functional, and phylogenetic diversity across different ages of land abandonment (i.e., control, recent, and old ages) in a limestone mine site in Iran. In addition, we considered two spatial scales: i) the plot scale (i.e., under 1m2 plots) and ii) the vegetation‐patch scale (i.e., under the canopies of nurse plants), to assess nurse plant effects, land abandonment ages, and their relative importance on biodiversity facets by performing Kruskal–Wallis H test and variation partitioning analysis. Our results indicated an increase in taxonomic, functional, and phylogenetic diversity at the plot scale, when considering the presence of nurse plants under old ages of land abandonment. Such significant differences were consistent with the positive effects of Artemisia patches on taxonomic diversity and Stipa patches on functional and phylogenetic diversity. In addition, we found a larger contribution from nurse plants than land abandonment age on biodiversity variation at both spatial scales studied. Therefore, these results indicate the importance of plant–plant interactions in restoring vegetation, with their effects on the presence of beneficiary species and their functional and phylogenetic relatedness depending on the nurse life forms under the stress‐gradient hypothesis. We analyzed the effects of nurse plants on biodiversity facets at community and vegetation‐patch scales across different ages of land abandonment in Cement‐Shargh plant in Iran. Our results indicated significant variations in biodiversity depending on presence the nurse plants. Such significant differences in biodiversity were consistent with positive effects of nurse shrubs on taxonomic diversity and grasses on functional and phylogenetic diversity at vegetation‐patch scale.