草地学报

›› 2011, Vol. 19 ›› Issue (1): 1-6.DOI: 10.11733/j.issn.1007-0435.2011.01.001

• 研究论文 •    下一篇

黄河源区高寒草甸不同植被生物量及土壤养分状况研究

王彦龙1, 马玉寿1, 施建军1, 董全民1, 吴海艳2, 盛利1, 杨时海1, 李世雄1   

  1. 1. 青海省畜牧兽医科学院, 青海, 西宁, 810016;
    2. 西藏自治区日喀则地区草原站, 西藏, 日喀则, 857000
  • 收稿日期:2010-04-15 修回日期:2010-11-19 出版日期:2011-02-15 发布日期:2011-02-15
  • 通讯作者: 马玉寿,E-mail:mayushou@sina.com
  • 作者简介:王彦龙(1976- ),男,甘肃兰州人,硕士,助理研究员,研究方向为黑土滩恢复及人工草地管理研究,E-mail:wangyanlong506@yahoo.cn;
  • 基金资助:
    国家“十一五”科技支撑计划重大项目(2006BAC01A02)(2009BAC61B02);青海省科技厅项目(2009-N-502)资助

Investigation of Biomass and Soil Nutrition of Different Vegetation Type at Alpine Meadow in Yellow River Headwater Area

WANG Yan-long1, MA Yu-shou1, SHI Jian-jun1, DONG Quan-min1, WU Hai-yan2, SHENG Li1, YANG Shi-hai1, LI Shi-xiong1   

  1. 1. Qinghai Academy of Animal and Veterinary Sciences, Xining, Qinghai Province 810016, China;
    2. Grassland Station of Rikaze Prefecture of Tibetan Autonomous Region, Rikaze, Tibetan Autonomous Region 857000, China
  • Received:2010-04-15 Revised:2010-11-19 Online:2011-02-15 Published:2011-02-15

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摘要： 为了给黄河源区原生草地植被的科学管理及退化草地的治理提供理论依据,对青海省玛沁县藏嵩草(Kobresia tibetica)沼泽化草甸,山生柳(Salix oritrepha)灌丛草甸及小嵩草(Kobresia pygmaea)草甸物种多样性、生物量及土壤养分状况进行比较研究。结果表明:不同植被类型植物群落多样性指数、物种丰富度指数、均匀度指数、生态优势度指数均为山生柳灌丛草甸>小嵩草草甸>藏嵩草沼泽化草甸。各群落生物量差异明显,地上、地下总生物量均为藏嵩草沼泽化草甸>山生柳灌丛草甸>小嵩草草甸(P<0.05)。藏嵩草沼泽化草甸土壤养分含量最高。小嵩草草甸和山生柳灌丛草甸各土壤层养分含量随土壤深度的增加呈下降趋势,pH值呈上升趋势,而藏嵩草沼泽化草甸却表现出相反的趋势,即随土壤深度的增加各层养分含量呈上升趋势,pH值呈下降趋势。

关键词: 黄河源区, 高寒草甸, 植被类型, 物种多样性, 生物量, 土壤养分

Abstract: The purpose of this research was to provide the theoretical basis for grassland management and restoration for degraded land in Yellow River Source.The plant species diversity,biomass and soil nutrition were studied among alpine meadow communities(Kobresia pygmaea meadow alpine meadow,K.tibetica swamp alpine meadow and Salix oritrepha shrub alpine meadow) in Maqin connty,Qinghai province of China.Results show that Shannon-wienner index,abundance index,evenness index and Simpson index are all presented with the same patterns in three communities.They are ranked as Salix oritrepha shrub meadow>Kobresia pygmaea meadow>K.tibetica swamp meadow.There is significant difference in biomass between three communities.Total biomass of above-ground and under-ground in these treatments are ranked as K.tibetica swamp meadow>Salix oritrepha shrub meadow>K.pygmaea meadow(P<0.05).Almost all factors of soil nutrition content in K.tibetica swamp meadow are significantly higher than the other two alpine meadows.Soil nutrition content is decreased,and pH valve increased with soil depth increasing for K.pygmaea meadow and Salix oritrepha shrub meadow,while K.tibetica swamp meadow shows an opposite trend.

Key words: Yellow River headwater area, Alpine meadow, Vegetation type, Species Diversity, Biomass, Soil nutrition

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