草原与草坪2025，Vol.45Issue(1)：25-34,10.DOI:10.13817/j.cnki.cyycp.2025.01.004
藏羊和牦牛放牧对青藏高原高寒草甸有机碳储量的影响
Effects of Tibetan sheep and yak grazing on organic carbon storage in alpine meadow of Tibetan Plateau
摘要
Abstract
[Objective]The study was carried out to explore the difference of the effect of Tibetan sheep and yak grazing on the organic carbon storage of Alpine Meadow on the Tibetan Plateau.[Method]The alpine meadow un-der long-term grazing in Zhuaxi xiulong Township,Tianzhu Tibetan Autonomous County,Wuwei City,Gansu Province was studied in 2021.The effects of three different grazing management methods(grazing Tibetan sheep,mixed grazing Tibetan sheep+yak and Grazing Yak)on the carbon storage of alpine meadow vegetation,roots,soil and ecosystem were measured.[Result]The results showed that compared with other treatments,grazing Tibetan sheep treatment was conducive to the increase of aboveground biomass,which was about 1.17 times that of grazing Tibetan sheep+yak treatment and 1.93 times that of Grazing Yak treatment.Grazing Yak was more conducive to the improvement of root biomass,which was about 1.14 times that of grazing Tibetan sheep+yak and 1.04 times that of grazing Tibetan sheep.Grazing Tibetan sheep was more conducive to the input of vegetation organic carbon storage,soil organic carbon storage and root-soil-grass system organic carbon storage.And Grazing Yak was con-ducive to the input of root organic carbon storage in alpine meadow.Correlation analysis showed that the changes of aboveground biomass,soil organic carbon storage and aboveground organic carbon storage were the main reasons af-fecting the organic carbon storage of root-soil-grass system.[Conclusion]Considering the realization of ecological and economic functions of alpine meadow,grazing Tibetan sheep was conducive to the input of carbon storage in al-pine meadow ecosystem,which was a more ideal grazing management method in alpine meadow.关键词
高寒草甸/放牧管理/生态系统/有机碳储量Key words
alpine meadow/grazing management/ecosystem/organic carbon storage分类
农业科技引用本文复制引用
王琳,白梅梅,魏孔涛,景媛媛,徐长林,鱼小军..藏羊和牦牛放牧对青藏高原高寒草甸有机碳储量的影响[J].草原与草坪,2025,45(1):25-34,10.基金项目
国家自然科学基金项目(31760695) （31760695）
