摘要
鼠害是引起高寒草甸植被变化的主要因素之一。本研究通过样方法对紫花针茅+杂类草群落和嵩草群落植物种重要值、类群生物量构成及鼠害概况进行相关分析。结果表明:紫花针茅+杂类草群落和嵩草群落的植物种构成差异较大,二者的类群生物量构成与重要值的变化类似。紫花针茅+杂类草群落生物量构成主要以禾草和杂类草植物为主,其分别占总生物量的38.8%和30.0%;而嵩草群落的生物量构成主要以莎草植物为主,占总生物量的86.2%。鼠害对紫花针茅+杂类草群落的影响比嵩草群落的影响大更大。
The rodent is one of the main factors causing the vegetation changes of alpine meadow. We analyzed the importance values of plant species, group biomass composition and the rodent survey of Stipa purpurea ＋ forbs and Kobresia communities by used the quadrat method. The result indicated that the plant species composition of the two communities was different. The change of biomass compositions and the importance values of two communities were sim-ilar. The biomass composition of Stipa purpurea ＋ forbs community mainly are grass and miscellaneous grass plants, accounting for 38. 8% and 30. 0 % of total biomass respectively, while the biomass of Kobresia community composed mainly by cyperaceous plants, accounting for 86. 2 % of total biomass. The rodent had bigger effect on the Stipa pur-purea ＋ forbs community than on the Kobresia community.
出处
《青海畜牧兽医杂志》
2016年第5期13-18,共6页
Chinese Qinghai Journal of Animal and Veterinary Sciences
关键词
鼠害
高寒草甸
群落构成
重要值
生物量构成
Rodent Alpine meadow Community composition Importance value Biomass composition
