|本期目录/Table of Contents|

[1]石福孙,吴宁,罗鹏,等.围栏禁牧对川西北亚高山高寒草甸群落结构的影响[J].应用与环境生物学报,2007,13(06):767-770.
 SHI Fusun,et al..Effect of Enclosing on Community Structure of Subalpine Meadow in Northwestern Sichuan, China[J].Chinese Journal of Applied & Environmental Biology,2007,13(06):767-770.
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围栏禁牧对川西北亚高山高寒草甸群落结构的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
13卷
期数:
2007年06期
页码:
767-770
栏目:
综述
出版日期:
2007-12-25

文章信息/Info

Title:
Effect of Enclosing on Community Structure of Subalpine Meadow in Northwestern Sichuan, China
作者:
石福孙吴宁罗鹏易绍良吴彦王乾李亚澜陈槐高永恒
(中国科学院成都生物研究所成都610041)
Author(s):
SHI Fusun et al.
(Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China)
关键词:
关键词亚高山高寒草甸放牧围栏群落结构生物量
Keywords:
Keywords subalpine meadow grazing enclosing community structure biomass
摘要:
摘要围栏禁牧4 a后,与放牧草地相比较: 1) 围栏草地物种数量有所下降,群落内出现物种27种,而长期放牧草地为33种.2) 围栏草地物种平均高度较高,为2023 cm,群落分层现象明显;放牧草地物种平均高度仅为 814 cm,群落无分层现象.3) 围栏草地内,杂草类的盖度(98%)大于禾草类的盖度(14%);放牧草地上,杂草类的盖度(53%)小于禾草类的盖度(56%)。4) 围栏草地以禾草为主的优良牧草的生产能力(3524 g/m2)低于放牧草地的生产能力(7547 g/m2).5) 围栏草地的地上生物量(27264 g/m2)和地下0~30 cm生物量(80161 g/m3)都高于放牧草地的地上生物量(18484 g/m2)和地下0~30 cm生物量(68382 g/m3).研究结果表明,围栏草地具有比放牧草地更复杂的群落结构,但其物种组成和优良牧草的生产能力,都低于放牧草地.图4表1参8
Abstract:
Abstract After four years enclosing, the enclosed meadow was compared with the grazed meadow and the result indicated: 1) The species (27) in the enclosed meadow were fewer than those (34) of the grazed one. 2) The average height of all species in the enclosed meadow (2023 cm) was higher than that of the grazed one (814 cm); furthermore, the hierarchy of the enclosed meadow was more complex than that of the grazed one. 3) In the enclosed meadow, the coverage of forbs (98%) was much higher than that of grasses (14%), but in the grazed meadow, the coverage of forbs (53%) was lower than that of grasses (56%). 4) The output of highquality forage (mostly grasses ) from the enclosed meadow was lower than that of the grazed one, the former was 3524 g/m2 and the latter 72 72 g/m2. 5) The both aboveand belowground (0~30 cm) biomass in the enclosed meadow was higher than that of the grazed one, and the values were 27264 g/m2, 80161 g/m3 and 18484 g/m2, 683 82 g/m3, respectively. All these indicate that the community structure in the enclosed meadow was more complex than that of the grazed one, and the biodiversity and highquality forage output of the enclosed meadow was lower than those of the grazed one. Fig 4, Tab 1, Ref 8

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更新日期/Last Update: 2008-01-17