CAJ | 학술논문

为研究草地培育措施对重度退化亚高山草甸植被群落结构特征的影响，分别以补播、施磷肥和划破草皮3个因素的不同组合方式对退化亚高山草甸、天然草地进行草地培育。结果表明：各草地培育措施对改善草地植被群落结构的效果不同。补播可提高补播草种所在群落的优势地位，划破草皮使良等牧草居于优势地位，施磷肥对草地植被群落结构影响不大，效果最差。补播+划破草皮改善优等牧草和良等牧草在草地植被结构中的效果比补播更显著，使优等牧草和良等牧草居于优势地位，补播+划破草皮的良等牧草优势地位与划破草皮相比有所降低。综合各项指标，补播+划破草皮+施磷肥的草地培育效果最优。
위연구초지배육조시대중도퇴화아고산초전식피군락결구특정적영향，분별이보파、시린비화화파초피3개인소적불동조합방식대퇴화아고산초전、천연초지진행초지배육。결과표명：각초지배육조시대개선초지식피군락결구적효과불동。보파가제고보파초충소재군락적우세지위，화파초피사량등목초거우우세지위，시린비대초지식피군락결구영향불대，효과최차。보파+화파초피개선우등목초화량등목초재초지식피결구중적효과비보파경현저，사우등목초화량등목초거우우세지위，보파+화파초피적량등목초우세지위여화파초피상비유소강저。종합각항지표，보파+화파초피+시린비적초지배육효과최우。
In order to study the pasture improvments on vegetation restoration in heavy-degraded subalpine meadow,the approaches of reseeding,using phosphate fertilizer,and cutting sod were applied in subalpine mead-ow in Lintan County,Gansu Province.The results showed that the effects of the pasture improvements on vege-tation restoration were different.Reseeding showed significant effect on community dominance of reseed grass. Cutting sod showed significant effect on community dominance of high quality forages.Phosphate fertilizer showed no significant effect on the vegetation community structure.The effects of cutting sod combined with re-seeding were higher than reseeding on community dominance of excellent and high quality forage,but were low-er than cutting sod on community dominance of high quality forage.Consideration of various indicators compre-hensively,reseeding combined with cutting sod and phosphate fertilizer application was the optimal approach.