Chin J Plant Ecol ›› 2008, Vol. 32 ›› Issue (6): 1335-1345.DOI: 10.3773/j.issn.1005-264x.2008.06.014
• Original article • Previous Articles Next Articles
LIN Yue, REN Jian-Yi, YUE Ming()
Received:
2007-12-07
Accepted:
2008-06-16
Online:
2008-12-07
Published:
2008-11-30
Contact:
YUE Ming
LIN Yue, REN Jian-Yi, YUE Ming. POPULATION STRUCTURE AND SPATIAL ANALYSIS OF BETULA ALBO- SINENSIS AT TAIBAI MOUNTAIN, NORTHWESTERN CHINA[J]. Chin J Plant Ecol, 2008, 32(6): 1335-1345.
径级 x | 存活数 Nx | 存活数标准化 Lx | lg Lx | 死亡数 Dx | 死亡率 Qx | 自x径级起超过x径级活个体总数 T | 生命期望 Ex |
---|---|---|---|---|---|---|---|
I | 1 | 0.5 | -0.301 | 1 | 1.000 | 123.5 | 123.500 |
II | 0 | 0.5 | -0.301 | - | - | 123 | - |
III | 1 | 7.5 | 0.875 | - | - | 122.5 | 122.500 |
IV | 14 | 21 | 1.322 | - | - | 115 | 8.214 |
V | 28 | 25 | 1.398 | 6 | 0.214 | 94 | 3.357 |
VI | 22 | 21.5 | 1.332 | 1 | 0.045 | 69 | 3.136 |
VII | 21 | 19.5 | 1.290 | 3 | 0.143 | 47.5 | 2.262 |
VIII | 18 | 15 | 1.176 | 6 | 0.333 | 28 | 1.556 |
IX | 12 | 8.5 | 0.929 | 7 | 0.583 | 13 | 1.083 |
X | 5 | 3 | 0.477 | 4 | 0.800 | 4.5 | 0.900 |
XI | 1 | 0.5 | -0.301 | 1 | 1.000 | 1.5 | 1.500 |
XII | 0 | 0.5 | -0.301 | - | - | 1 | - |
XIII | 1 | 0.5 | -0.301 | 1 | 1.000 | 0.5 | 0.500 |
Table 1 Life table of Betula albo-sinensis population at Mountain Taibai
径级 x | 存活数 Nx | 存活数标准化 Lx | lg Lx | 死亡数 Dx | 死亡率 Qx | 自x径级起超过x径级活个体总数 T | 生命期望 Ex |
---|---|---|---|---|---|---|---|
I | 1 | 0.5 | -0.301 | 1 | 1.000 | 123.5 | 123.500 |
II | 0 | 0.5 | -0.301 | - | - | 123 | - |
III | 1 | 7.5 | 0.875 | - | - | 122.5 | 122.500 |
IV | 14 | 21 | 1.322 | - | - | 115 | 8.214 |
V | 28 | 25 | 1.398 | 6 | 0.214 | 94 | 3.357 |
VI | 22 | 21.5 | 1.332 | 1 | 0.045 | 69 | 3.136 |
VII | 21 | 19.5 | 1.290 | 3 | 0.143 | 47.5 | 2.262 |
VIII | 18 | 15 | 1.176 | 6 | 0.333 | 28 | 1.556 |
IX | 12 | 8.5 | 0.929 | 7 | 0.583 | 13 | 1.083 |
X | 5 | 3 | 0.477 | 4 | 0.800 | 4.5 | 0.900 |
XI | 1 | 0.5 | -0.301 | 1 | 1.000 | 1.5 | 1.500 |
XII | 0 | 0.5 | -0.301 | - | - | 1 | - |
XIII | 1 | 0.5 | -0.301 | 1 | 1.000 | 0.5 | 0.500 |
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