高寒地区不同建植期人工草地群落垂直结构和生产力变化的研究
Study on the Change of Vertical Structure and Productivity of Artificial Grassland Community Sowed in Different Year in Alpine Area
查看参考文献10篇
|
文摘
|
对高寒地区不同建植期人工草地群落垂直结构和生产力的变化研究结果表明:(1)随着人工草地建植时间的延长,人工草地群落垂穗披碱草高度异质性逐渐减小.(2) 不同建植期(1999、1998、1997年建植)人工草地垂穗披碱草和群落平均地上生物量均主要分布在0 ～20cm冠层中,约占平均地上生物量的61.03%、90.64%、84.55%和67.47%、92.54%、86.08%.(3) 不同建植期 (1999、1998、1997年建植)人工草地群落平均地下生物量均主要分布在0～10cm土层中,约占地下总生物量的85.97%、81.73%和78.47%.(4) 建植的人工草地如果其组分单一,即物种的丰富度很低时,均匀度增加,物种对环境资源的竞争力和利用率提高,导致土壤资源库中某些营养成分缺乏,草地群落初级生产力因此而降低. |
|
其他语种文摘
|
The change of vertical structure and productivity of artificial grassland community sowed in different year in alpine area was studied. The research results indicated: (1) the heterogeneity of plant height of Elymus nutans in artificial grass-lands would gradually decrease with the time prolonging of artificial grassland. (2) the average above-ground biomass of Elyrnus nutans in artificial grassland and com-munity was distributed in the 0 ~ 20 cm of upper straw stratum in different sowing years( sowed in 1999,1998,1997), it accounted for 61. 03%, 90. 64%, 84. 55%, and 67. 47% ,92. 54% ,86. 08% of average above-ground biomass, respectively. (3) the average under-ground biomass of artificial grassland of community were main distrib-uted in the 0 - 10cm of soil layers in different sowing years(sowed in 1999, 1998, 1997), it accounted for 85. 97% , 81. 73% , 78. 47% of average below-ground bio-mass respectively. (4)if there were few species in artificial grassland, that is, species evenness would increase when species richness is lower in the plant community, the competition ability and utilization rate of species on environment resources would be enhanced resulting in lack of some nutrient components in soil resources store. This is the reason that the primary productivity of artificial grassland community were gradually decreased. |
|
来源
|
中国草地
,2005,27(5):16-21 【核心库】
|
|
关键词
|
人工草地
;
垂直结构
;
生产力
;
高寒地区
|
|
地址
|
1.
中国科学院西北高原生物研究, 青海, 西宁, 810008
2.
中国科学院西北高原生物研究所, 青海, 西宁, 810008
3.
青海畜牧兽医科学院草原研究所, 青海, 西宁, 810003
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1000-6311 |
|
学科
|
畜牧、动物医学、狩猎、蚕、蜂 |
|
基金
|
国家自然科学基金
;
中国科学院“百人计划”项目
|
|
文献收藏号
|
CSCD:2085912
|
参考文献 共
10
共1页
|
|
1.
纪亚君. 浅谈青海省高寒牧区人工草地的利用 [J].
青海草业,2002,11(3):17-19
|
被引
2
次
|
|
|
|
|
2.
张耀生. 高寒牧区中华羊茅人工草地退化演替的数量特征研究.
应用生态学报,2002,13(3):285-289
|
被引
25
次
|
|
|
|
|
3.
马克平. 生物群落多样性的测度方法 I a 多样性的测度方法(上)[J].
生物多样性,1994,2:231-239
|
被引
1156
次
|
|
|
|
|
4.
王得利. 放牧条件下人工草地植物高度的变化[J].
东北师大学报自然科学版,2003,35(1):102-109
|
被引
3
次
|
|
|
|
|
5.
王刚. 人工草地种群生态学研究[M].
人工草地种群生态学研究,1998
|
被引
26
次
|
|
|
|
|
6.
董全民. 牦牛放牧率对江河源区混播禾草地上初级生产量及种间竞争力的影响.
中国草地,2005,27(2):1-8
|
被引
14
次
|
|
|
|
|
7.
董世魁. 高寒地区多年生禾草混播草地群落稳定性及其调控机制研究[J].
草原与草坪,2001(3):3-8
|
被引
1
次
|
|
|
|
|
8.
Bazzaz F A. Plant-plant interaction in success ional environment[C].
Perspective on plant competition,1990
|
被引
1
次
|
|
|
|
|
9.
Morris E C. Self-thinning and competition intensity over a gradient of nutrient availability [J].
Journal of Ecology,1991,79:903-923
|
被引
3
次
|
|
|
|
|
10.
Abrans R. Some comments on measuring niche overlap [J].
Ecology,1980,61:44-49
|
被引
3
次
|
|
|
|
|
了解气象卫星更多信息，请访问