草地学报

草地学报 ›› 2014, Vol. 22 ›› Issue (5): 991-997.DOI: 10.11733/j.issn.1007-0435.2014.05.013

• 研究论文 • 上一篇    下一篇

祁连山东段不同高寒灌丛草地土壤性状特征变化

赵锦梅1, 赵晶忠1, 耿妍1, 权佳1, 徐长林2   

  1. 1. 甘肃农业大学林学院, 甘肃 兰州 730070;
    2. 甘肃农业大学草业学院, 甘肃 兰州 730070
  • 收稿日期:2013-12-30 修回日期:2014-01-27 出版日期:2014-10-15 发布日期:2014-09-30
  • 通讯作者: 徐长林
  • 作者简介:赵锦梅（1978-），女，甘肃天水人，博士，副教授，主要从事水土保持与荒漠化研究，E-mail：zhaojm@gsau.edu.cn;
  • 基金资助:

    甘肃省自然科学研究基金计划项目（1208RJZA141）；甘肃农业大学科技创新项目（GAV-CX1015）资助

Soil Properties of Different Alpine Shrub Grasslands in Eastern Qilian Mountains

ZHAO Jin-mei1, ZHAO Jing-zhong1, GENG Yan1, QUAN Jia1, XU Chang-lin2   

  1. 1. College of Forestry, Gansu Agricultural University, Lanzhou, Gansu Province 730070, China;
    2. College of Grassland Science, Gansu Agricultural University, Lanzhou, Gansu Province 730070, China
  • Received:2013-12-30 Revised:2014-01-27 Online:2014-10-15 Published:2014-09-30

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摘要：

为探讨祁连山东段不同高寒灌丛草地土壤性状的变化，在该区内选取了金露梅（Porentilla fruticosa）、柳（Salix）和杜鹃（Rhododendron）3类高寒灌丛草地，研究了不同高寒灌丛草地土壤物理和化学性状特征变化。结果表明：高寒灌丛草地土壤理化性状差异显著。土壤含水量表现为杜鹃灌丛草地>柳灌丛草地>金露梅灌丛草地；容重表现为金露梅灌丛草地>柳灌丛草地>杜鹃灌丛草地；总孔隙度表现为柳灌丛草地>杜鹃灌丛草地>金露梅灌丛草地；杜鹃灌丛草地土壤有机质含量最高为127.638 g·kg-1，金露梅灌丛草地最低为89.954 g·kg-1；土壤全P、全K和速效N，P，K含量均表现为杜鹃灌丛草地>柳灌丛草地>金露梅灌丛草地，土壤全N含量金露梅灌丛草地最大为2.912 g·kg-1，杜鹃灌丛草地最小为2.586 g·kg-1。相关性分析表明，3类高寒灌丛草地的土壤性状的各个因子之间有显著的相关关系。

关键词: 土壤, 理化性状, 高寒灌丛草地, 祁连山东段

Abstract:

For lasting development of the local ecosystem environment. The mainly objective of this study reported was focused on the effect of different shrub grasslands on the soil properties of alpine areas in eastern Qilian Mountains. Three alpine shrub grasslands were selected in the experimental area, including Potentilla fruticosa shrub grassland, Salix shrub grassland and Rhododendron shrub grassland. The results showed that different shrub grasslands had significantly different effects on the soil properties of the alpine region. The soil water contents of tested grasslands were ordered as Rhododendron shrub grassland>Salix shrub grassland>Potentilla fruticosa shrub grassland, the order of bulk density was Potentilla fruticosa shrub grassland>Salix shrub grassland>Rhododendron shrub grassland, and the total porosity was Salix shrub grassland>Rhododendron shrub grassland>Potentilla fruticosa shrub grassland. The organic matter content of Rhododendron shrub grassland was 127.638 g·kg-1, significantly higher than that of other alpine shrub grasslands (P<0.05) and that of Potentilla fruticosa shrub grassland was 89.954 g·kg-1, which was significantly lower than other patterns (P<0.05). Potentilla fruticosa shrub grassland had the largest soil total N content (2.912 g·kg-1), while Rhododendron shrub grassland had the smallest one (2.586 g·kg-1). Correlation analysis indicated that there was a significant correlation among the factors of soil properties.

Key words: Soil, Physical and chemical characteristics, Alpine shrub grasslands, Eastern Qilian Mountains

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