祁连山东端北麓天然草原禁牧与轮牧效益调查分析  

Investigation and Analysis of Grazing Prohibition and Rotational Grazing Benefit of the Natural Steppe at the North Foot of the Eastern End of the Qilian Mountains

作　　者：白文丽 胡发成 赵雅丽 孙金桂 BAI Wen-li;HU Fa-cheng;ZHAO Ya-li;SUN Jin-gui(Grassland Workstation in Wuwei City;Grassland Workstation in Tianzhu County;Huazang Temple Forest Farm in Tianzhu County,Wuwei Gansu733000,China)

机构地区：[1]武威市草原工作站,甘肃武威733000 [2]天祝县草原工作站 [3]天祝县华藏寺林场

出　　处：《畜牧兽医杂志》2022年第5期170-173,共4页Journal of Animal Science and Veterinary Medicine

摘　　要：多年来,随着全球气候变暖,区域气候变化及人类活动加剧,祁连山北麓生态环境日益恶化。近年来,通过实施国家退牧还草工程项目,取得了显著的经济生态和社会效益。本次调查分析,在实施区域天祝县禁牧与轮牧草原,通过植被高度、盖度和产草量监测,调查天然草原禁牧与轮牧效益。调查显示,高寒草甸草原和温性草原禁牧可有效提高生物产量,但超过一定期限并无正相关。禁牧比轮牧草原生物量和产值均有提高,常年放牧草原生物量和产值降低,合理的轮牧利用是天然草原最好的利用方式。参考国内的研究结果,天祝县高寒草甸草原禁牧区土壤有机碳年增加量达0.007Tg C·a^(-1),温性草原禁牧区土壤有机碳年增加量达0.016Tg C·a^(-1)。Over the years,with global warming,regional climate change and intensified human activities,the ecological environment at the northern foot of the Qilian Mountains has been deteriorating day by day.In recent years,through the implementation of the national project of returning grazing to grassland,significant economic,ecological and social benefits have been achieved.In this investigation and analysis,grazing prohibition and rotational grazing are implemented in Tianzhu County,and the benefits of grazing prohibition and rotational grazing in natural grasslands are investigated through monitoring of vegetation height,coverage and grass yield.The survey shows that grazing prohibition in alpine meadow steppe and temperate steppe can effectively increase biomass yield,but there is no positive correlation beyond a certain period.The biomass and output value of grasslands under grazing prohibition are higher than those in rotation grazing,while the biomass and output value of grasslands grazing perennially decrease.Reasonable utilization of rotation grazing is the best way to use natural grasslands.Referring to the domestic research results,the annual increase of soil organic carbon in the grazing forbidden area of alpine meadow steppe in Tianzhu County was 0.007TgC.a^(-1),and the annual increase of soil organic carbon in the forbidden grazing area of warm steppe was 0.016TgC.a^(-1).

关 键 词：天然草原 退牧还草 禁牧 轮牧 调查分析 

分 类 号：S812.29[农业科学—草业科学]