草业学报Issue(3)：197-204,8.DOI:10.11686/cyxb20140323
川西北红原草地在联户经营下的适宜载畜量研究
A study on the appropriate stocking capacity under group-household management on the Hongyuan grasslands in north-western Sichuan
摘要
Abstract
The experiment aimed to study the group-household grassland at Hongyuan in north-western Sichuan by systematically analysing the dynamic characteristics of the alpine meadow and soil nutrient with different livestock capacities under natural conditions.As the livestock capacity increased,the dominant species of win-ter slope pasture,such as Carexenervis,Elymusnutan and Kobresiasetchwanensis,gradually reduced,while forbs,such as Potentilla anserina and P.discolor,gradually increased.The dominant species of summer ground pasture transformed from C.muliensis to Blysmussinocompressus,Deschampsiacaespitosa,C.mey-eriana and K.tibetica.The soil nutrient showed no significant difference between the winter slope pasture and summer ground pasture with different grazing intensities.In general,irrespective of the type of pasture,the proportions of good grass gradually dropped with an increase in livestock capacity,and the aboveground bio-mass and diversity index were higher under modest levels of grazing than under other levels.Under group-household management of the alpine meadow in the north-western Sichuan Plateau,the suitable livestock ca-pacity on winter slope pasture was 0.97 Yak/ha,and on summer ground pasture,it was 1.14-1.33 Yak/ha.关键词
高寒草甸/联户模式/适宜载畜量/植物群落特征/物种多样性/土壤化学性质Key words
alpine meadow/group-household management/appropriate stocking capacity/plant community characteristics/species diversity/soil chemical property分类
农业科技引用本文复制引用
刘焘,干友民,张洪轩,杨树晶,宋中齐,符佩斌,张雪莲..川西北红原草地在联户经营下的适宜载畜量研究[J].草业学报,2014,(3):197-204,8.基金项目
公益性行业（农业）科研专项（201203006）资助。 （）
