The Qinghai‐Tibetan Plateau (QTP) is the most expansive area of alpine grasslands worldwide, which have been grazed for thousands of years. Distinct environmental conditions render QTP grasslands vulnerable to disturbances. Intensified grazing in the area has led to its degradation in recent decades. However, the effects of grazing on grassland production, soil carbon, and nitrogen contents, their relationships and the factors influencing the grasslands of QTP have yet to be determined. In this study, we evaluated the effect of grazing by using a hierarchical meta‐analysis, and explored relation of response variables by structural equation modeling. In all, grazing significantly decreased the aboveground biomass (−38%), total biomass (TB) (−14%), litter (−63%), soil organic carbon (SOC) (−20%), and total nitrogen (TN) (−15%). The root shoot ratio was increased (75%). Grazing intensity exerted significant effects, and mean annual temperature and altitude influenced the responses to a certain degree. Specifically, the response of the root shoot ratio, which can affect the responses of SOC and TN, was significantly higher in the QTP grasslands. Our findings elucidated the response patterns, specialties, relationships, and factors influencing the QTP grasslands, which need to be considered in the development of process‐based models and the sustainable use of alpine grasslands on QTP in the future.

中文翻译：

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放牧显着提高了青藏高原草地草原的根冠比，但减少了土壤有机碳：层次荟萃分析

青藏高原是世界上最广阔的高山草原地区，已经放牧了数千年。不同的环境条件使QTP草原容易受到干扰。近几十年来，该地区放牧的加剧导致其退化。然而，放牧对草地生产，土壤碳和氮含量，它们之间的关系以及影响QTP草地的因素的影响尚待确定。在这项研究中，我们通过分层的荟萃分析评估了放牧的效果，并通过结构方程模型探索了响应变量之间的关系。总之，放牧显着降低了地上生物量（−38％），总生物量（TB）（−14％），凋落物（−63％），土壤有机碳（SOC）（−20％）和总氮（TN） ）（-15％）。根冠比率增加（75％）。放牧强度产生显着影响，年平均气温和海拔高度在一定程度上影响响应。具体而言，在QTP草地中，根冠比的响应会明显影响SOC和TN的响应。我们的发现阐明了影响QTP草原的响应模式，特殊性，关系和因素，这在未来基于过程的模型的开发以及QTP上高山草原的可持续利用中需要加以考虑。在QTP草原上明显更高。我们的发现阐明了影响QTP草原的响应模式，特殊性，关系和因素，这在未来基于过程的模型的开发以及QTP上高山草原的可持续利用中需要加以考虑。在QTP草原上明显更高。我们的发现阐明了影响QTP草原的响应模式，特殊性，关系和因素，这在未来基于过程的模型的开发以及QTP上高山草原的可持续利用中需要加以考虑。