Chin J Plant Ecol ›› 2007, Vol. 31 ›› Issue (1): 56-65.DOI: 10.17521/cjpe.2007.0008
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GONG Wei(), HU Ting-Xing, WANG Jing-Yan, GONG Yuan-Bo, RAN Hua, ZHANG Shi-Rong, LIAO Er-Hua
Received:
2005-12-12
Accepted:
2006-03-28
Online:
2007-12-12
Published:
2007-01-30
GONG Wei, HU Ting-Xing, WANG Jing-Yan, GONG Yuan-Bo, RAN Hua, ZHANG Shi-Rong, LIAO Er-Hua. STUDY ON FRACTAL FEATURES OF SOIL AGGREGATE STRUCTURE UNDER NATURAL EVERGREEN BROADLEAVED FOREST AND ARTIFICIAL REGENERATION IN SOUTHERN SICHUAN PROVINCE[J]. Chin J Plant Ecol, 2007, 31(1): 56-65.
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林分类型 Forest type | 土层 Soil layer (cm) | 团聚体大小 Cluster composition size (mm) | 结构体破 坏率5)(%) | 分形 维数6) | 相关 系数7) | ||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
>5 | 5~2 | 2~1 | 1~0.5 | 0.5~0.25 | >0.25 | ||||||||||||||||||||||||||||||
天然常绿阔叶林1) | 0~20 | 54.499 62.593 | 17.387 18.745 | 9.134 6.587 | 7.113 6.877 | 2.829 2.602 | 90.962 97.404 | 6.614 | 2.415 2.120 | 0.980 0.994 | |||||||||||||||||||||||||
20~40 | 63.765 68.106 | 13.345 14.547 | 5.702 5.441 | 4.729 5.974 | 2.154 2.867 | 89.695 96.935 | 7.469 | 2.473 2.183 | 0.945 0.987 | ||||||||||||||||||||||||||
檫木林2) | 0~20 | 63.163 70.707 | 12.754 16.200 | 6.334 4.269 | 5.322 3.909 | 2.220 1.697 | 89.793 96.782 | 7.221 | 2.469 2.184 | 0.951 0.971 | |||||||||||||||||||||||||
20~40 | 50.844 62.877 | 16.723 18.879 | 8.725 5.433 | 8.118 5.403 | 3.601 2.613 | 88.011 95.205 | 7.556 | 2.489 2.274 | 0.981 0.980 | ||||||||||||||||||||||||||
柳杉林3) | 0~20 | 21.743 63.017 | 18.688 16.638 | 13.363 5.504 | 17.377 6.523 | 10.411 3.343 | 81.582 95.025 | 14.147 | 2.579 2.293 | 0.992 0.984 | |||||||||||||||||||||||||
20~40 | 4.209 67.510 | 9.695 16.183 | 7.684 4.533 | 21.672 4.281 | 18.828 2.435 | 62.088 94.942 | 34.604 | 2.764 2.301 | 0.946 0.967 | ||||||||||||||||||||||||||
水杉林4) | 0~20 | 54.612 60.158 | 14.753 17.587 | 7.817 6.637 | 6.923 8.040 | 3.536 3.563 | 87.641 95.985 | 8.693 | 2.506 2.235 | 0.972 0.993 | |||||||||||||||||||||||||
20~40 | 38.673 70.397 | 15.876 14.209 | 11.655 4.206 | 11.826 4.516 | 6.123 2.451 | 84.153 95.779 | 12.138 | 2.551 2.265 | 0.994 0.969 |
Table 1 Composition of soil aggregates under natural evergreen broadleaved forest and artificial regeneration
林分类型 Forest type | 土层 Soil layer (cm) | 团聚体大小 Cluster composition size (mm) | 结构体破 坏率5)(%) | 分形 维数6) | 相关 系数7) | ||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
>5 | 5~2 | 2~1 | 1~0.5 | 0.5~0.25 | >0.25 | ||||||||||||||||||||||||||||||
天然常绿阔叶林1) | 0~20 | 54.499 62.593 | 17.387 18.745 | 9.134 6.587 | 7.113 6.877 | 2.829 2.602 | 90.962 97.404 | 6.614 | 2.415 2.120 | 0.980 0.994 | |||||||||||||||||||||||||
20~40 | 63.765 68.106 | 13.345 14.547 | 5.702 5.441 | 4.729 5.974 | 2.154 2.867 | 89.695 96.935 | 7.469 | 2.473 2.183 | 0.945 0.987 | ||||||||||||||||||||||||||
檫木林2) | 0~20 | 63.163 70.707 | 12.754 16.200 | 6.334 4.269 | 5.322 3.909 | 2.220 1.697 | 89.793 96.782 | 7.221 | 2.469 2.184 | 0.951 0.971 | |||||||||||||||||||||||||
20~40 | 50.844 62.877 | 16.723 18.879 | 8.725 5.433 | 8.118 5.403 | 3.601 2.613 | 88.011 95.205 | 7.556 | 2.489 2.274 | 0.981 0.980 | ||||||||||||||||||||||||||
柳杉林3) | 0~20 | 21.743 63.017 | 18.688 16.638 | 13.363 5.504 | 17.377 6.523 | 10.411 3.343 | 81.582 95.025 | 14.147 | 2.579 2.293 | 0.992 0.984 | |||||||||||||||||||||||||
20~40 | 4.209 67.510 | 9.695 16.183 | 7.684 4.533 | 21.672 4.281 | 18.828 2.435 | 62.088 94.942 | 34.604 | 2.764 2.301 | 0.946 0.967 | ||||||||||||||||||||||||||
水杉林4) | 0~20 | 54.612 60.158 | 14.753 17.587 | 7.817 6.637 | 6.923 8.040 | 3.536 3.563 | 87.641 95.985 | 8.693 | 2.506 2.235 | 0.972 0.993 | |||||||||||||||||||||||||
20~40 | 38.673 70.397 | 15.876 14.209 | 11.655 4.206 | 11.826 4.516 | 6.123 2.451 | 84.153 95.779 | 12.138 | 2.551 2.265 | 0.994 0.969 |
林分类型 Forest type | 土层 (cm) Soil layer | 自然含 水率5)(%) | 容重6) (g·cm-3) | 毛管孔隙7) (%) | 非毛管 孔隙8)(%) | 初渗系数9) k10(mm·min-1) | 稳渗系数10) k10(mm·min-1) |
---|---|---|---|---|---|---|---|
天然常绿阔叶林1) | 0~20 | 132.9±8.4 | 0.48±0.05 | 64.3±4.9 | 9.5±1.4 | 5.76±2.29 | 1.39±0.95 |
20~40 | 112.0±5.7 | 0.59±0.02 | 62.0±3.2 | 7.8±3.1 | 4.76±3.07 | 1.19±0.37 | |
檫木林2) | 0~20 | 100.8±6.9 | 0.75±0.08 | 58.8±6.0 | 8.5±4.2 | 4.97±2.63 | 0.98±0.45 |
20~40 | 81.9±5.1 | 0.78±0.03 | 57.4±3.5 | 7.4±4.6 | 3.55±1.03 | 0.85±0.47 | |
柳杉林3) | 0~20 | 48.5±3.5 | 0.92±0.13 | 50.6±3.2 | 7.6±5.7 | 2.51±1.74 | 0.58±0.31 |
20~40 | 38.1±4.4 | 1.27±0.10 | 41.2±3.4 | 4.6±1.9 | 2.10±1.16 | 0.26±0.17 | |
水杉林4) | 0~20 | 87.5±5.2 | 0.71±0.15 | 57.6±10.6 | 8.0±5.0 | 3.15±2.52 | 0.94±0.32 |
20~40 | 69.4±4.1 | 0.84±0.01 | 56.6±3.3 | 7.4±1.5 | 2.72±1.16 | 0.79±0.54 |
Table 2 Soil physical properties under natural evergreen broadleaved forest and artificial regeneration
林分类型 Forest type | 土层 (cm) Soil layer | 自然含 水率5)(%) | 容重6) (g·cm-3) | 毛管孔隙7) (%) | 非毛管 孔隙8)(%) | 初渗系数9) k10(mm·min-1) | 稳渗系数10) k10(mm·min-1) |
---|---|---|---|---|---|---|---|
天然常绿阔叶林1) | 0~20 | 132.9±8.4 | 0.48±0.05 | 64.3±4.9 | 9.5±1.4 | 5.76±2.29 | 1.39±0.95 |
20~40 | 112.0±5.7 | 0.59±0.02 | 62.0±3.2 | 7.8±3.1 | 4.76±3.07 | 1.19±0.37 | |
檫木林2) | 0~20 | 100.8±6.9 | 0.75±0.08 | 58.8±6.0 | 8.5±4.2 | 4.97±2.63 | 0.98±0.45 |
20~40 | 81.9±5.1 | 0.78±0.03 | 57.4±3.5 | 7.4±4.6 | 3.55±1.03 | 0.85±0.47 | |
柳杉林3) | 0~20 | 48.5±3.5 | 0.92±0.13 | 50.6±3.2 | 7.6±5.7 | 2.51±1.74 | 0.58±0.31 |
20~40 | 38.1±4.4 | 1.27±0.10 | 41.2±3.4 | 4.6±1.9 | 2.10±1.16 | 0.26±0.17 | |
水杉林4) | 0~20 | 87.5±5.2 | 0.71±0.15 | 57.6±10.6 | 8.0±5.0 | 3.15±2.52 | 0.94±0.32 |
20~40 | 69.4±4.1 | 0.84±0.01 | 56.6±3.3 | 7.4±1.5 | 2.72±1.16 | 0.79±0.54 |
项目 Item | 拟合回归方程Linear regression equation | 相关系数Correlation coefficient | ||
---|---|---|---|---|
湿筛Wet sieving | 干筛Dry sieving | 湿筛Wet sieving | 干筛Dry sieving | |
自然含水率1) | D=2.780 8-0.003 0 X | D=2.393 0-0.001 9 X | -0.884 9** | -0.953 9** |
容重2) | D=2.185 7+0.435 4 X | D=2.053 9+0.224 6 X | 0.966 0** | 0.833 7** |
毛管孔隙3) | D=3.339 8-0.014 4 X | D=2.634 2-0.007 2 X | -0.975 6** | -0.811 7* |
非毛管孔隙4) | D=3.081 3-0.072 4 X | D=2.501 8-0.035 5 X | -0.947 7** | -0.777 5* |
初渗系数5) | D=2.774 5-0.066 1 X | D=2.402 8-0.046 3 X | -0.816 9* | -0.958 2** |
稳渗系数6) | D=2.780 7-0.286 4 X | D=2.377 4-0.166 8 X | -0.934 9** | -0.911 0** |
Table 3 Relationship between fractal dimension and soil physical properties
项目 Item | 拟合回归方程Linear regression equation | 相关系数Correlation coefficient | ||
---|---|---|---|---|
湿筛Wet sieving | 干筛Dry sieving | 湿筛Wet sieving | 干筛Dry sieving | |
自然含水率1) | D=2.780 8-0.003 0 X | D=2.393 0-0.001 9 X | -0.884 9** | -0.953 9** |
容重2) | D=2.185 7+0.435 4 X | D=2.053 9+0.224 6 X | 0.966 0** | 0.833 7** |
毛管孔隙3) | D=3.339 8-0.014 4 X | D=2.634 2-0.007 2 X | -0.975 6** | -0.811 7* |
非毛管孔隙4) | D=3.081 3-0.072 4 X | D=2.501 8-0.035 5 X | -0.947 7** | -0.777 5* |
初渗系数5) | D=2.774 5-0.066 1 X | D=2.402 8-0.046 3 X | -0.816 9* | -0.958 2** |
稳渗系数6) | D=2.780 7-0.286 4 X | D=2.377 4-0.166 8 X | -0.934 9** | -0.911 0** |
林分类型 Forest type | 土层 Soil layer (cm) | 有机质 Organic matter (g·kg-1) | 全氮 Total-N (g·kg-1) | 碱解氮 Hydrolysis-N (mg·kg-1) | 全磷 Total-P (mg·kg-1) | 速效磷 Available-P (mg·kg-1) | 全钾 Total-K (g·kg-1) | 速效钾 Available-K (mg·kg-1) |
---|---|---|---|---|---|---|---|---|
天然常绿 | 0~20 | 115.8±6.7 | 1.40±0.15 | 236.9±20.4 | 243.5±16.4 | 2.07±0.19 | 31.4±2.2 | 47.3±5.9 |
阔叶林1) | 20~40 | 64.3±4.9 | 0.84±0.07 | 157.9±16.8 | 214.8±15.5 | 1.16±0.08 | 31.1±1.9 | 31.9±3.2 |
檫木林2) | 0~20 | 89.2±6.0 | 1.22±0.05 | 178.7±12.9 | 236.6±12.1 | 1.62±0.10 | 30.6±1.1 | 45.6±6.3 |
20~40 | 52.0±5.2 | 0.76±0.11 | 145.4±7.7 | 188.9±9.0 | 0.98±0.15 | 28.3±2.5 | 26.4±2.3 | |
柳杉林3) | 0~20 | 30.9±3.0 | 0.59±0.02 | 92.7±4.3 | 195.6±12.1 | 0.83±0.08 | 22.5±1.7 | 30.8±3.9 |
20~40 | 17.8±4.4 | 0.30±0.01 | 52.4±5.0 | 139.4±6.8 | 0.67±0.13 | 20.8±2.5 | 20.6±1.8 | |
水杉林4) | 0~20 | 75.1±7.3 | 1.13±0.14 | 163.6±10.7 | 223.9±12.2 | 1.29±0.07 | 29.9±1.8 | 41.3±4.6 |
20~40 | 38.2±5.9 | 0.57±0.06 | 90.3±7.9 | 179.3±18.2 | 0.79±0.05 | 24.3±1.4 | 24.7±1.7 |
Table 4 Soil nutrient content under natural evergreen broadleaved forest and artificial regeneration
林分类型 Forest type | 土层 Soil layer (cm) | 有机质 Organic matter (g·kg-1) | 全氮 Total-N (g·kg-1) | 碱解氮 Hydrolysis-N (mg·kg-1) | 全磷 Total-P (mg·kg-1) | 速效磷 Available-P (mg·kg-1) | 全钾 Total-K (g·kg-1) | 速效钾 Available-K (mg·kg-1) |
---|---|---|---|---|---|---|---|---|
天然常绿 | 0~20 | 115.8±6.7 | 1.40±0.15 | 236.9±20.4 | 243.5±16.4 | 2.07±0.19 | 31.4±2.2 | 47.3±5.9 |
阔叶林1) | 20~40 | 64.3±4.9 | 0.84±0.07 | 157.9±16.8 | 214.8±15.5 | 1.16±0.08 | 31.1±1.9 | 31.9±3.2 |
檫木林2) | 0~20 | 89.2±6.0 | 1.22±0.05 | 178.7±12.9 | 236.6±12.1 | 1.62±0.10 | 30.6±1.1 | 45.6±6.3 |
20~40 | 52.0±5.2 | 0.76±0.11 | 145.4±7.7 | 188.9±9.0 | 0.98±0.15 | 28.3±2.5 | 26.4±2.3 | |
柳杉林3) | 0~20 | 30.9±3.0 | 0.59±0.02 | 92.7±4.3 | 195.6±12.1 | 0.83±0.08 | 22.5±1.7 | 30.8±3.9 |
20~40 | 17.8±4.4 | 0.30±0.01 | 52.4±5.0 | 139.4±6.8 | 0.67±0.13 | 20.8±2.5 | 20.6±1.8 | |
水杉林4) | 0~20 | 75.1±7.3 | 1.13±0.14 | 163.6±10.7 | 223.9±12.2 | 1.29±0.07 | 29.9±1.8 | 41.3±4.6 |
20~40 | 38.2±5.9 | 0.57±0.06 | 90.3±7.9 | 179.3±18.2 | 0.79±0.05 | 24.3±1.4 | 24.7±1.7 |
项目 Item | 拟合回归方程Linear regression equation | 相关系数Correlation coefficient | ||
---|---|---|---|---|
湿筛Wet sieving | 干筛Dry sieving | 湿筛Wet sieving | 干筛Dry sieving | |
有机质Organic matter | D=2.696 5-0.002 7 X | D=2.342 9-0.001 8 X | -0.832 8* | -0.933 5** |
全氮Total-N | D=2.736 6-0.241 8 X | D=2.358 4-0.148 7 X | -0.843 6** | -0.867 8** |
碱解氮Hydrolysis-N | D=2.757 2-0.001 6 X | D=2.369 8-0.001 0 X | -0.890 4** | -0.907 5** |
全磷Total-P | D=3.100 2-0.002 8 X | D=2.550 1-0.001 6 X | -0.896 9** | -0.840 8** |
速效磷Available-P | D=2.730 5-0.169 9 X | D=2.379 4-0.125 4 X | -0.752 9* | -0.930 4** |
全钾Total-K | D=3.150 6-0.022 7 X | D=2.583 2-0.012 8 X | -0.892 1** | -0.846 1** |
速效钾Available-K | D=2.792 3-0.007 8 X | D=2.407 4-0.005 2 X | -0.729 3* | -0.818 8* |
Table 5 Relationship between fractal dimension and soil nutrient content
项目 Item | 拟合回归方程Linear regression equation | 相关系数Correlation coefficient | ||
---|---|---|---|---|
湿筛Wet sieving | 干筛Dry sieving | 湿筛Wet sieving | 干筛Dry sieving | |
有机质Organic matter | D=2.696 5-0.002 7 X | D=2.342 9-0.001 8 X | -0.832 8* | -0.933 5** |
全氮Total-N | D=2.736 6-0.241 8 X | D=2.358 4-0.148 7 X | -0.843 6** | -0.867 8** |
碱解氮Hydrolysis-N | D=2.757 2-0.001 6 X | D=2.369 8-0.001 0 X | -0.890 4** | -0.907 5** |
全磷Total-P | D=3.100 2-0.002 8 X | D=2.550 1-0.001 6 X | -0.896 9** | -0.840 8** |
速效磷Available-P | D=2.730 5-0.169 9 X | D=2.379 4-0.125 4 X | -0.752 9* | -0.930 4** |
全钾Total-K | D=3.150 6-0.022 7 X | D=2.583 2-0.012 8 X | -0.892 1** | -0.846 1** |
速效钾Available-K | D=2.792 3-0.007 8 X | D=2.407 4-0.005 2 X | -0.729 3* | -0.818 8* |
林分类型 Forest type | 土层(cm) Soil layer | 细菌Bacteria (106·g-1干土) | 真菌Fungi (103·g-1干土) | 放线菌5) (103·g-1干土) | 微生物总数6) (106·g-1干土) |
---|---|---|---|---|---|
天然常绿阔叶林1) | 0~20 | 9.25±1.13 | 4.89±0.63 | 11.91±1.43 | 9.26 |
20~40 | 7.45±0.82 | 1.55±0.21 | 4.64±0.48 | 7.45 | |
檫木林2) | 0~20 | 6.10±1.02 | 3.48±0.75 | 8.12±1.16 | 6.11 |
20~40 | 5.98±0.48 | 0.96±0.11 | 3.82±0.42 | 5.98 | |
柳杉林3) | 0~20 | 3.96±0.44 | 1.63±0.29 | 5.69±0.88 | 3.97 |
20~40 | 3.88±0.28 | 0.14±0.02 | 1.71±0.15 | 3.88 | |
水杉林4) | 0~20 | 5.96±1.01 | 2.81±0.45 | 7.76±1.34 | 5.97 |
20~40 | 5.05±0.54 | 0.72±0.09 | 3.53±0.31 | 5.05 |
Table 6 Soil microbe number under natural evergreen broadleaved forest and artificial regeneration
林分类型 Forest type | 土层(cm) Soil layer | 细菌Bacteria (106·g-1干土) | 真菌Fungi (103·g-1干土) | 放线菌5) (103·g-1干土) | 微生物总数6) (106·g-1干土) |
---|---|---|---|---|---|
天然常绿阔叶林1) | 0~20 | 9.25±1.13 | 4.89±0.63 | 11.91±1.43 | 9.26 |
20~40 | 7.45±0.82 | 1.55±0.21 | 4.64±0.48 | 7.45 | |
檫木林2) | 0~20 | 6.10±1.02 | 3.48±0.75 | 8.12±1.16 | 6.11 |
20~40 | 5.98±0.48 | 0.96±0.11 | 3.82±0.42 | 5.98 | |
柳杉林3) | 0~20 | 3.96±0.44 | 1.63±0.29 | 5.69±0.88 | 3.97 |
20~40 | 3.88±0.28 | 0.14±0.02 | 1.71±0.15 | 3.88 | |
水杉林4) | 0~20 | 5.96±1.01 | 2.81±0.45 | 7.76±1.34 | 5.97 |
20~40 | 5.05±0.54 | 0.72±0.09 | 3.53±0.31 | 5.05 |
项目 Item | 拟合回归方程Linear regression equation | 相关系数Correlation coefficient | ||
---|---|---|---|---|
湿筛Wet sieving | 干筛Dry sieving | 湿筛Wet sieving | 干筛Dry sieving | |
细菌Bacteria | D=2.819 2-0.048 4 X | D=2.431 0-0.033 4 X | -0.807 2* | -0.932 1** |
真菌Fungi | D=2.628 3-0.048 2 X | D=2.301 2-0.034 3 X | -0.717 4* | -0.853 0** |
放线菌Actinomyces | D=2.671 3-0.023 8 X | D=2.326 4-0.016 0 X | -0.722 7* | -0.813 1* |
Table 7 Relationship between fractal dimension and soil microbe number
项目 Item | 拟合回归方程Linear regression equation | 相关系数Correlation coefficient | ||
---|---|---|---|---|
湿筛Wet sieving | 干筛Dry sieving | 湿筛Wet sieving | 干筛Dry sieving | |
细菌Bacteria | D=2.819 2-0.048 4 X | D=2.431 0-0.033 4 X | -0.807 2* | -0.932 1** |
真菌Fungi | D=2.628 3-0.048 2 X | D=2.301 2-0.034 3 X | -0.717 4* | -0.853 0** |
放线菌Actinomyces | D=2.671 3-0.023 8 X | D=2.326 4-0.016 0 X | -0.722 7* | -0.813 1* |
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