Chin J Plant Ecol ›› 2009, Vol. 33 ›› Issue (4): 755-763.DOI: 10.3773/j.issn.1005-264x.2009.04.014
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HUANG Gang(), ZHAO Xue-Yong, HUANG Ying-Xin, LI Yu-Lin, SU Yan-Gui
Received:
2008-12-01
Revised:
2009-03-29
Online:
2009-12-01
Published:
2009-07-30
Contact:
HUANG Gang
HUANG Gang, ZHAO Xue-Yong, HUANG Ying-Xin, LI Yu-Lin, SU Yan-Gui. THE ROOT LONGEVITY OF ARTEMISIA HALODENDRON INHABITING TWO SANDY LAND HABITATS[J]. Chin J Plant Ecol, 2009, 33(4): 755-763.
参数 Parameters | 生境 Habitat | |
---|---|---|
流动沙地 Mobile sandy land | 固定沙地 Fixed sandy land | |
砂粒含量 Sand (%) 0-20a 粘粒含量 Clay (%) 0-20a 容重 Soil bulk density 0-20 (g·cm-3)a 土壤有机质 Soil organic matter 0-20 (g·kg-1)a 土壤全氮 Soil total nitrogen 0-20 (g·kg-1)a 速效氮 Soil available nitrogen (mg·kg-1)b 速效磷 Soil available phosphorus (mg·kg-1)b 冠层面积 Canopy area (m2) 基径直径 Diameter of basal branch (cm) 基径数 Number of basal branch (n) 冠幅高度 Crown height (m) | 98.52±0.11 0.99±0.15 1.61±0.02 0.52±0.04 0.07±0.01 7.23 6.76 7.30 ± 2.03 0.73 ± 0.06 260.33 ± 85.31 0.71± 0.05 | 96.86±0.82ns 2.11±0.49* 1.62±0.03ns 3.06±0.34* 2.43±0.32* 14.36 7.98 1.89 ± 1.09* 1.17 ± 0.12* 16.43 ± 5.72* 0.57± 0.03ns |
Table 1 Aboveground growth conditions of Artemisia halodendron and soil environment factors in the mobile and fixed sandy lands (mean ± SE)
参数 Parameters | 生境 Habitat | |
---|---|---|
流动沙地 Mobile sandy land | 固定沙地 Fixed sandy land | |
砂粒含量 Sand (%) 0-20a 粘粒含量 Clay (%) 0-20a 容重 Soil bulk density 0-20 (g·cm-3)a 土壤有机质 Soil organic matter 0-20 (g·kg-1)a 土壤全氮 Soil total nitrogen 0-20 (g·kg-1)a 速效氮 Soil available nitrogen (mg·kg-1)b 速效磷 Soil available phosphorus (mg·kg-1)b 冠层面积 Canopy area (m2) 基径直径 Diameter of basal branch (cm) 基径数 Number of basal branch (n) 冠幅高度 Crown height (m) | 98.52±0.11 0.99±0.15 1.61±0.02 0.52±0.04 0.07±0.01 7.23 6.76 7.30 ± 2.03 0.73 ± 0.06 260.33 ± 85.31 0.71± 0.05 | 96.86±0.82ns 2.11±0.49* 1.62±0.03ns 3.06±0.34* 2.43±0.32* 14.36 7.98 1.89 ± 1.09* 1.17 ± 0.12* 16.43 ± 5.72* 0.57± 0.03ns |
参数 (Y) Parameters | 全氮 Total N | 有机质 SOM | 体积含水量 SVWC | 容重 SBD |
---|---|---|---|---|
细根寿命MRL | -0.83* | -0.58 | 0.96* | -0.89* |
回归方程 Regression model | Y=14.33 + 8.66 SVWC R2=0.92, p=0.002 |
Table 2 Pearson correlation coefficients and the results of multiple linear regression of soil volumetric water content (SVWC), soil bulk density (SBD), soil total nitrogen (Total N) and soil organic matter (SOM) on median root longevity (MRL) of Artemisia halodendron at 0-50 cm soil layer of the six subplots
参数 (Y) Parameters | 全氮 Total N | 有机质 SOM | 体积含水量 SVWC | 容重 SBD |
---|---|---|---|---|
细根寿命MRL | -0.83* | -0.58 | 0.96* | -0.89* |
回归方程 Regression model | Y=14.33 + 8.66 SVWC R2=0.92, p=0.002 |
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