PDF(Pubmed)
Abstract：
Many studies have investigated the effects of environmental context on biodiversity or multifunctionality in alpine regions, but it is uncertain how human pressure and climate may affect their relationships. Here, we combined the comparative map profile method with multivariate datasets to assess the spatial pattern of ecosystem multifunctionality and further identify the effects of human pressure and climate on the spatial distribution of biodiversity-multifunctionality relationships in alpine ecosystems of the Qinghai-Tibetan Plateau (QTP). Our results indicate that at least 93% of the areas in the study region show a positive correlation between biodiversity and ecosystem multifunctionality across the QTP. Biodiversity-multifunctionality relationships with increasing human pressure show a decreasing trend in the forest, alpine meadow, and alpine steppe ecosystems, while an opposite pattern was found in the alpine desert steppe ecosystem. More importantly, aridity significantly strengthened the synergistic relationship between biodiversity and ecosystem multifunctionality in forest and alpine meadow ecosystems. Taken together, our results provide insights into the importance of protecting and maintaining biodiversity and ecosystem multifunctionality in response to climate change and human pressure in the alpine region.
摘要：
许多研究调查了环境对高寒地区生物多样性或多功能性的影响，但是不确定人类的压力和气候如何影响他们的关系。这里,我们将比较地图剖面方法与多元数据集相结合，以评估生态系统多功能性的空间格局，并进一步确定人类压力和气候对青藏高原高山生态系统生物多样性-多功能性关系空间分布的影响（QTP）。我们的结果表明，在整个QTP中，研究区域中至少有93％的区域显示出生物多样性与生态系统多功能性之间的正相关。随着人类压力的增加，森林中的生物多样性-多功能关系呈下降趋势，高山草甸,和高山草原生态系统，而在高山沙漠草原生态系统中发现了相反的模式。更重要的是,干旱显著加强了森林和高寒草甸生态系统生物多样性与生态系统多功能性之间的协同关系。一起来看,我们的研究结果为保护和维护生物多样性和生态系统多功能性以应对高寒地区的气候变化和人类压力的重要性提供了见解。
