序号 No. | 物种 Species | 重要值 Important value (Ⅳ) | |
工程迹地 Closed railway (CR) | 非工程迹地 Control check (CK) | ||
1 | 矮假龙胆 Gentianella pygmaea | – | 0.013 |
2 | 矮生嵩草 Kobresia humilis | 0.012 | – |
3 | 波伐早熟禾 Poa poophagorum | 0.040 | 0.015 |
4 | 粗壮嵩草 Kobresia robusta | 0.013 | – |
5 | 钉柱委陵菜 Potentilla saundersiana | 0.016 | 0.035 |
6 | 短穗兔耳草 Lagotis brachystachya | 0.080 | 0.045 |
7 | 多裂委陵菜 Potentilla multifida | 0.036 | 0.011 |
8 | 二裂委陵菜 Potentilla bifurca | 0.210 | 0.041 |
9 | 伏毛山莓草 Sibbaldia adpressa | 0.030 | – |
10 | 高山嵩草 Kobresia pygmaea | 0.147 | 0.387 |
11 | 高山唐松草 Thalictrum alpinum | – | 0.012 |
12 | 高原毛茛 Ranunculus tanguticus | – | 0.016 |
13 | 禾叶风毛菊 Saussurea graminea | – | 0.014 |
14 | 黑紫披碱草 Elymus atratus | – | 0.016 |
15 | 洽草 Koeleria cristata | 0.049 | – |
16 | 青藏薹草 Carex moorcroftii | 0.010 | 0.070 |
17 | 弱小火绒草 Leontopodium pusillum | 0.031 | 0.050 |
18 | 沙生风毛菊 Saussurea arenaria | 0.012 | 0.010 |
19 | 狮牙草状风毛菊 Saussurea leontodontoides | – | 0.020 |
20 | 萎软紫菀 Aster flaccidus | 0.020 | 0.070 |
21 | 无茎黄鹌菜 Youngia simulatrix | – | 0.010 |
22 | 西伯利亚蓼 Polygonum sibiricum | 0.020 | 0.060 |
23 | 冰岛蓼 Koenigia islandica | – | 0.050 |
24 | 星状雪兔子 Saussurea stella | – | 0.010 |
25 | 窄叶薹草 Carex montis-everestii | 0.032 | – |
26 | 藏芥Phaeonychium parryoides | 0.012 | – |
27 | 藏北早熟禾 Poa borealitibetica | 0.031 | – |
28 | 紫花针茅 Stipa purpurea | 0.022 | 0.016 |
29 | 紫羊茅 Festuca rubra | 0.090 | – |
“–”表示重要值 < 0.01。 “–” indicate the important value < 0.01. |

Citation: XU Y, LUO J F, ZHOU J X, WANG L N, YANG M X. Secondary community characteristics and interspecific associations in alpine meadow areas along the Qinghai-Tibet railway. Pratacultural Science, 2020, 37(1): 41-51. doi:

青藏铁路沿线高寒草甸区次生群落特征及种间关联性
English
Secondary community characteristics and interspecific associations in alpine meadow areas along the Qinghai-Tibet railway
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重庆欢乐生肖
图 2 不同样地主要物种种间
${{\rm{\chi }} ^2}$ 检验种对数百分比Figure 2. 重庆欢乐生肖 Percentage of dominant species pairs on different plots
图 3 不同样地χ2检验值半矩阵图
Figure 3. The semi-matrix of χ2 test of association of dominant species on different plots
图 4 重庆欢乐生肖 主要物种种间Spearman秩相关系数半矩阵
Figure 4. Semi-matrix of Spearman’s rank correlation coefficients of dominant species
表 1 主要物种重要值表
Table 1. Dominant species and important values of alpine meadow
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表 2 重庆欢乐生肖 群落总体关联性变化
Table 2. Dynamics of associations in the alpine meadow, Qinghai-Tibet Plateau
样地 Plot 联结指数 Association index (VR) 统计量 Statistic (W) 临界值 Critical value 总体关联性 Overall association CR 1.44 51.84 (23.27, 51.00) 显著正关联
Significantly positive associationCK 1.17 42.09 (23.27, 51.00) 不显著正关联
No positive associationχ2 0.95(36) = 23.27, χ2 0.05(36) = 51.00. 下载: 导出CSV
表 3 不同样地Spearman秩相关系数检验结果
Table 3. Comparison of Spearman rank correlation coefficient
样地Plot 正相关种对数百分比 Percentage of positive association/% 负相关种对数百分比 Percentage of negative association/% 不相关Null 极显著
Highly significant显著
Significant不显著
No significant极显著
Highly significant显著
Significant不显著
No significantCR 8.95 2.11 35.26 2.63 3.16 47.89 0 CK 4.29 5.71 26.19 4.76 3.81 55.24 0 下载: 导出CSV
表 4 χ2重庆欢乐生肖检验和Spearman秩相关系数检验
Table 4. χ2重庆欢乐生肖 test and Spearman’s rank correlation
样地
Plot检验方法
Examining measure正关联Positive association 负关联Negative association 无关联Null 极显著
Highly significant显著
Significant不显著
No significant总数
Total极显著
Highly significant显著
Significant不显著
No significant总数
TotalCR 卡方检验 χ2 Test 9 11 75 95 2 9 84 95 0 Spearman
秩相关系数
Spearman’s
rank correlation17 4 67 88 5 6 91 102 0 CK 卡方检验 χ2 Test 8 7 77 92 16 12 90 118 0 Spearman
秩相关系数
Spearman’s
rank correlation9 12 55 76 10 7 117 134 0 下载: 导出CSV
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