短期围栏封育对退化高寒草地植被数量特征及土壤养分的影响  

THE INFLUENCE OF SHORT-TERM FENCING TO THE VEGETATION QUANTITY CHARACTERISTICS OF DEGRADED ALPINE MEADOW AND SOIL NUTRIENT

作　　者：王有彬[1] 

机构地区：[1]青海省草原总站,青海西宁810008

出　　处：《青海草业》2017年第4期14-17,共4页Qinghai Prataculture

摘　　要：本文研究了短期围栏封育(3a)对退化高寒草地植被数量特征及土壤养分含量的影响,结果表明:(1)短期围栏封育能有效提高禾本科和莎草科植物平均高度,使豆科和毒杂草类植物的平均高度显著降低(P<0.05);(2)短期围栏封育能使禾本科、莎草科和毒杂草类植物的盖度有所增加,使豆科植物盖度略有降低,但是增减不明显(P>0.05);(3)短期围栏封育使禾本科和毒杂草地上生物量有所提高,使莎草科植物地上生物量略降低,使豆科植物地上生物量显著降低(P<0.05);(4)短期围栏封育能使土壤全钾含量有所提高,使全氮、全磷和速效磷含量略降低,使速效氮、速效钾和有机质含量显著降低(P<0.05)。We did a study about the influence of short-term fencing （3 years）to the vegetationquantitycharacteristics of degraded alpine meadow andsoil nutrient, the results showed that ： （ 1 ） Short-term fencing can effectively improve the plants average height of the gramineae and the cyperaceae, makethe average height of the leguminous and the weeds significantly reduced（P〈0.05） ;（2） Short-term fencing can make the coverage of the gramineae, the cyperaceae and the weeds increased, make the coverage of the leguminous slightly decreased, but the amplitude of increasing or decreasing is not obvious （ P 〉 0.05 ） ; （ 3 ） Short - term fencingcan made the aboveground biomass of the gramineae and the weeds increased, made the aboveground biomass of the cyperaceaedecreased slightly, and made the aboveground biomass of the leguminous decreased significantly （P〈0.05） ; （4） Short fencing can made the soil total potassium content increased, made the total nitrogen, total phosphorus and available phosphorus content decreased slightly , and made the available nitrogen, available potassium and organic matter content decreased significantly （P〈0.05）.

关 键 词：围栏封育 退化高寒草地 植被数量特征 土壤养分 

分 类 号：S812.8[农业科学—草业科学]