江河源区人工草地群落特征、多样性及其稳定性分析
The structure,biodiversity and stability of artificial grassland plant communities in the source regions of the Yangze and Yellow River
查看参考文献13篇
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文摘
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对江河源区人工草地群落特征、多样性及其稳定性的研究结果表明,不同处理草地植物群落的物种丰富度、多样性、均匀度指数因时间和空间的变化而有明显的差异,群落演替从5龄到6龄,各群落丰富度和多样性指数增加,生物生产量降低,群落相似性系数增大.5龄老芒麦+早熟禾混播人工草地(LP5)群落的地上生物量最高(379.6 g/m2),老芒麦单播(ES5)居中(323.4 g/m2),对照组(CKF5和CK5)最低(124.3和118.6 g/m2).6龄植物群落地上生物量依次为原生植被+封育(VP6,310.1 g/m2)>老芒麦+早熟禾混播(LP6,216.3 g/m2)>老芒麦单播(ES6,190.8 g/m2)>对照(CK6,88.7 g/m2).群落间相似性系数的变化说明,单播(ES)与混播(LP)人工草地群落有趋同演化的趋势.人工草地群落随着结构的复杂化,与对照群落间的相似性提高,说明群落处于退化演替阶段,物种丰富度和多样性增大,群落稳定性提高. |
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其他语种文摘
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This paper discusses the changes in structure, biodiversity, above-ground dry-weight biomass (DW), and stability, of artificially planted grassland communities in the Yangze and Yellow River regions. Treatments used in the study were; Elymus sibiricus +Poa mixed-sowing grassland treatment (LP) , primary vegetation community with fertilization (VP), E, sibiricus single-sowing grassland treatment (ES) , control and reserva-tion community (CKF) and a control community (CK). Results from the study indicated that between 5 years to 6 years of community succession, an increase in biodiversity, a decrease in biomass and an increase in the community similarity coefficient arose under different treatments compared with the CK treatment. In the 5 year-old communities, the above-ground dry-weight (DW) biomass in LP, DW = 379. 61 g/m2 was greater thaninES(DW = 323. 4 g/m2), CKF (DW = 124. 3 g/m2), and in CK (DW = 118.6 g/m*). Measurements taken in 6 year-old communities, showed the accumulation of above-ground biomass to be greatest" in VP treat-ment (DW = 310.1 g/m2), followed by LP (DW = 216.3 g/m2), ES (DW= 190.8 g/m2), and then CK6 (DW = 88. 7 g/mz). The change of the community similarity coefficient showed the LP and ES treatments to have a tendency of convergent succession. The community similarity coefficient between artificial grassland communities and control communities was shown to be greater with increased complexity of grassland commu-nity structures, showing that the artificial grassland communities were in a stage of regressive succession. The stability of the communities improved with an increase in the biodiversity of the grassland communities and cor-responding richness index. |
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来源
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草业学报
,2005,14(3):23-30 【核心库】
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关键词
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江河源区
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人工草地
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群落特征
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多样性
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相似性系数
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稳定性
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地址
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1.
中国科学院西北高原生物研究所, 青海, 西宁, 810001
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青海畜牧兽医高职学院, 青海, 湟源, 812100
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青海省畜牧兽医科学院, 青海, 西宁, 810008
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1004-5759 |
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学科
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植物学 |
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基金
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国家“十五”科技攻关重大项目
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中国科学院资源与生态环境研究重点项目
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文献收藏号
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CSCD:1990747
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参考文献 共
13
共1页
|
|
1.
王启基. 青藏高原草地资源环境及可持续发展研究[J].
青海草业,1997,6(3):1-11
|
被引
20
次
|
|
|
|
|
2.
Schulte R P O. A mathematical framework for the quantification of production stability in grassland ecosystems[J].
Ecological Modelling,2003,159:27-69
|
被引
2
次
|
|
|
|
|
3.
Schulte R P O. A mathematical framework for the quantification of production stability in grassland ecosystems[J].
Ecological Modelling,2003,159:71-77
|
被引
3
次
|
|
|
|
|
4.
张耀生. 青藏高寒牧区多年生人工草地持续利用的研究.
草业学报,2003,12(3):22-27
|
被引
49
次
|
|
|
|
|
5.
董世魁. 人工草地群落稳定性及其调控机制研究现状[J].
草原与草坪,2000(3):3-8
|
被引
19
次
|
|
|
|
|
6.
周志宇. 阿拉善荒漠草地恢复演替过程中物种多样性与生产力的变化.
草业学报,2003,12(1):34-40
|
被引
58
次
|
|
|
|
|
7.
Grime J P. the debate deepens[J].
Science,1997,277:1260-1261
|
被引
84
次
|
|
|
|
|
8.
Kvaesth T O. Note on biological diversity.
Oikos,1991,62:123-127
|
被引
2
次
|
|
|
|
|
9.
安渊. 内蒙古大针茅草原草地生产力及其可持续利用研究Ⅰ.放牧系统植物地上现存量动态研究.
草业学报,2001,10(2):22-27
|
被引
39
次
|
|
|
|
|
10.
周兴民. 中国的嵩草草甸[M].
中国的嵩草草甸,2001
|
被引
2
次
|
|
|
|
|
11.
王启基. 不同调控策略下退化草地植物群落结构及其多样性分析[A].
高寒草甸生态系统(第4集),1995:269-279
|
被引
12
次
|
|
|
|
|
12.
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
|
|
|
|
|
13.
王国宏. 再论生物多样性与生态系统的稳定性.
生物多样性,2002,10(1):126-134
|
被引
100
次
|
|
|
|
|
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