Acta Agrestia Sinica

›› 2006, Vol. 14 ›› Issue (1): 77-83.DOI: 10.11733/j.issn.1007-0435.2006.01.017

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Investigation of the Plant Community and Soil Environmental Factors of Three Alpine Vegetation Types

YANG Shi-hai1, LI Ying-niang2, PU Ji-yan3, MA Yu-shou1, ZHAO Liang2, ZHOU Hua-kun2, WANG Chang-ting2   

  1. 1. Grassland Institute of Qinghai Academy of Animal and Veterinary Science, Xining, Qinghai Province 810016, China;
    2. Northwest Institute of Plateau Biology, CAS, Xining, Qinghai Province 810001, China;
    3. Grassland Department of Agriculture and Husbandry College of Qinghai University, Xining, Qinghai Province 810016, China
  • Received:2005-02-02 Revised:2005-11-21 Online:2006-02-15 Published:2006-02-15

三种高寒草甸植被类型植物群落结构及其土壤环境因子研究

杨时海1, 李英年2, 蒲继延3, 马玉寿1, 赵亮2, 周华坤2, 王长庭2   

  1. 1. 青海畜牧兽医科学院草原研究所, 青海, 西宁, 810016;
    2. 中国科学院西北高原生物研究所, 青海, 西宁, 810001;
    3. 青海大学农牧学院草业科学系, 青海, 西宁, 810016
  • 通讯作者: 李英年,E-mail:ynli@nwipb.ac.cn
  • 作者简介:杨时海,(1981- ),男,甘肃临洮人,硕士研究生,主要从事草地生态研究工作;
  • 基金资助:
    中国科学院知识创新工程重大项目(KZCX1-SW-01-01A);国家重点基础研究发展规划项目(2002CB412501)

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Abstract: Haibei Alpine Meadow Ecosystem Research Station with the Chinese Academy of Sciences conducted an investigation of the plant community and soil environment factors of a Potentilla fruticosa shrub meadow,a Kobresia humilis meadow and a swamp meadow.Results show that the annual aboveground biomass of the K.humilis meadow reached 339.594 g/m2,that of the swamp meadow,339.358 g/m2,and of the P.fruticosa shrub meadow,278.299 g/m2.The rate of solar energy utilization of the K.humilis meadow was 0.099%,of the swamp meadow,0.091%,and of the P.fruticosa shrub meadow,0.075%.There were 54 species in the plant community of the K.humilis meadow,47 species in the community of the P.fruticosa shrub meadow,and 24 species in the swamp meadow.The soil temperature within 0～20 cm depth of the K.humilis meadow was higher than that of the P.fruticosa shrub meadow at the same depth,but the soil humidity density of the two was the reverse.To sum up,the soil of K.humilis meadow boasted higher temperature and lower humidity than those of the P.fruticosa shrub meadow,while the soil of the swamp meadow had the highest humidity of saturation but the lowest temperature.

Key words: Vegetation types, Above-ground net biomass, Soil temperature and soil moisture, Rate of solar energy utilization

摘要： 对海北定位站地区分布的金露梅灌丛草甸、矮嵩草草甸和沼泽化藏嵩草草甸3种高寒植被类型群落及土壤环境因子的观测结果表明:3种植被类型地上年净生产量依次为矮嵩草草甸(339.594 g/m2)>沼泽化藏嵩草草甸(339.358g/m2)>金露梅灌丛草甸(278.299 g/m2);光能利用率为矮嵩草草甸(0.099%)>沼泽化藏嵩草草甸(0.091%)>金露梅灌丛草甸(0.075%);植被群落的种类组成为矮嵩草草甸(54种)>金露梅灌丛草甸(47种)>沼泽化藏嵩草草甸(24种)。观察矮嵩草草甸和金露梅灌丛草甸0~20 cm土壤温湿度表明,矮嵩草草甸土壤温度>金露梅灌丛草甸,土壤湿度则相反,其中矮嵩草草甸土壤温度较高,土壤湿度较低,金露梅灌丛草甸则是高土壤湿度和低土壤温度,而沼泽化藏嵩草草甸土壤湿度达饱和甚至超饱和状态,土壤温度显得更低。

关键词: 植被类型, 地上年净生产量, 土壤温湿度, 光能利用率

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