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生态学杂志 ›› 2005, Vol. ›› Issue (12): 1409-1412.

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滇西北藏族地区不同管理方式的草地生物量的比较研究

刘玲玲1,3, 吴兆录1,2, 李青1,3, 徐宁1,3   

  1. 1. 中国科学院西双版纳热带植物园, 昆明, 650223;
    2. 云南大学生态学与地植物学研究所, 昆明, 650091;
    3. 中国科学院研究生院, 北京, 100039
  • 收稿日期:2004-12-31 修回日期:2005-04-02 出版日期:2005-12-10
  • 基金资助:
    中国科学院知识创新工程重要方向资助项目(KSCX2-1-09-06).

Biomass production of different managed meadows in Tibetan Region of Northwest Yunnan Province

LIU Lingling1,3, WU Zhaolu1,2, LI Qing1,3, XU Ning1,3   

  1. 1. Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China;
    2. Institute of Ecology and Geobotany, Yunnan University, Kunming 650091, China;
    3. Graduate School of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2004-12-31 Revised:2005-04-02 Online:2005-12-10

摘要: 用样方法比较研究了香格里拉县藏族村寨3种管理的亚高山草地物种多样性和生物量。在研究样地中,种植草地、刈草草地、放牧草地的植物物种数量分别是49种、24种、12种;地上生物量分别是169.2±69.5、228.0±48.3和100.2±35.6 g·m-2;地下生物量分别是767.7±264.2和1593.5±553.0 g·m-2、2593.6±894.3 g·m-2;地上地下生物量的比值分别是1:4.5、1:7.0、1:25.9。认为藏族自由放牧的草地有减少植物物种多样性和促使生物量向地下转移的趋势,用围栏圈养的传统刈草利用方式是维持草地较高物种多样性和较高而且稳定的生物量积累的有效途径。

关键词: 草炭与风化煤, 根系活力, 养分吸收

Abstract: In this paper,the plant species diversity and biomass production of different managed meadows in the Tibetan Region of Northwest Yunnan Province were investigated by plot methods.The results showed that in cultivated grassland,forage grassland and grazing pasture,the number of plant species was 49,24 and 12,aboveground biomass was 169.2?69.5,228.0?48.3 and 100.2?35.6 g穖-2,underground biomass was 767.7?264.2,1593.5?553.0 and 2593.6?894.3 g穖-2,and the ratio of aboveground biomass to belowground biomass was 1:4.5,1:7.0,and 1:25.9,respectively,suggesting that grazing pasture was characterized by less plant species and more underground biomass production,while forage grassland was beneficial to the maintain of high species diversity and high and stable biomass production,being worthy for promoting the grassland restoration in the studied area.

Key words: Peat and weathered coal, Activity of root system, Nutrition absorption

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