Chin J Plant Ecol ›› 2018, Vol. 42 ›› Issue (12): 1145-1153.DOI: 10.17521/cjpe.2018.0184
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MENG Zhen-Si1,XIANG Wei2,SU Guo-Kui1,LI Da-Dong1,DONG Ting-Fa1,PENG Jin-You1,LI Xiao-Dong3,GONG Xiao-Ping3,LIANG Ning3,XU Xiao1,*()
Received:
2018-07-31
Revised:
2018-09-02
Online:
2018-12-20
Published:
2019-04-04
Contact:
Xiao XU
Supported by:
MENG Zhen-Si, XIANG Wei, SU Guo-Kui, LI Da-Dong, DONG Ting-Fa, PENG Jin-You, LI Xiao-Dong, GONG Xiao-Ping, LIANG Ning, XU Xiao. Spatial distribution of male and female Populus cathayana populations and its drivers in Xiaowutai Mountains, Hebei, China[J]. Chin J Plant Ecol, 2018, 42(12): 1145-1153.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2018.0184
性别 Sex | 预期平均距离 Expected mean distance (m) | 平均观测距离 Observed mean distance (m) | 平均最近邻指数 Nearest neighbor ration R | Z得分 Score-Z | p |
---|---|---|---|---|---|
雄 Male | 4.767 | 3.394 | 0.712 | -31.045 | < 0.001 |
雌 Female | 4.900 | 3.362 | 0.686 | -32.908 | < 0.001 |
全部 Total | 3.218 | 2.491 | 0.774 | -36.105 | < 0.001 |
Table 1 The average nearest neighbor analysis on the spatial distribution of Populus cathayana in Xiaowutai Mountains
性别 Sex | 预期平均距离 Expected mean distance (m) | 平均观测距离 Observed mean distance (m) | 平均最近邻指数 Nearest neighbor ration R | Z得分 Score-Z | p |
---|---|---|---|---|---|
雄 Male | 4.767 | 3.394 | 0.712 | -31.045 | < 0.001 |
雌 Female | 4.900 | 3.362 | 0.686 | -32.908 | < 0.001 |
全部 Total | 3.218 | 2.491 | 0.774 | -36.105 | < 0.001 |
海拔 Altitude | 雄株 Male | 雌株 Female | 性比 Sex ratio | ||||
---|---|---|---|---|---|---|---|
数量 Number | 密度 Density (ind.·hm-2) | 平均胸径 DBH (cm) | 数量 Number | 密度 Density (ind.·hm-2) | 平均胸径 DBH (cm) | ||
低海拔 Low altitude (1300-1400 m) | 88 | 18.87 | 38.90 ± 1.23a | 130 | 27.88 | 38.54 ± 1.16a | 0.68 |
中低海拔 Middle-low altitude (1400-1500 m) | 818 | 130.33 | 32.89 ± 0.42c | 622 | 99.10 | 32.04 ± 0.43c | 1.32 |
中海拔 Middle altitude (1500-1600 m) | 1 462 | 144.83 | 34.17 ± 0.31bc | 1 481 | 146.71 | 32.57 ± 0.29c | 0.99 |
中高海拔 Middle-high altitude (1600-1700 m) | 685 | 130.20 | 36.16 ± 0.46b | 660 | 125.44 | 35.28 ± 0.42b | 1.04 |
高海拔 High altitude (1700-1800 m) | 121 | 61.71 | 38.91 ± 1.30a | 112 | 57.12 | 38.44 ± 1.08a | 1.08 |
Table 2 The number, density, average diameter at breast height (DBH) and sex ratio of female and male Populus cathayana trees at different altitudes in Xiaowutai Mountains (mean ± SE)
海拔 Altitude | 雄株 Male | 雌株 Female | 性比 Sex ratio | ||||
---|---|---|---|---|---|---|---|
数量 Number | 密度 Density (ind.·hm-2) | 平均胸径 DBH (cm) | 数量 Number | 密度 Density (ind.·hm-2) | 平均胸径 DBH (cm) | ||
低海拔 Low altitude (1300-1400 m) | 88 | 18.87 | 38.90 ± 1.23a | 130 | 27.88 | 38.54 ± 1.16a | 0.68 |
中低海拔 Middle-low altitude (1400-1500 m) | 818 | 130.33 | 32.89 ± 0.42c | 622 | 99.10 | 32.04 ± 0.43c | 1.32 |
中海拔 Middle altitude (1500-1600 m) | 1 462 | 144.83 | 34.17 ± 0.31bc | 1 481 | 146.71 | 32.57 ± 0.29c | 0.99 |
中高海拔 Middle-high altitude (1600-1700 m) | 685 | 130.20 | 36.16 ± 0.46b | 660 | 125.44 | 35.28 ± 0.42b | 1.04 |
高海拔 High altitude (1700-1800 m) | 121 | 61.71 | 38.91 ± 1.30a | 112 | 57.12 | 38.44 ± 1.08a | 1.08 |
与河岸距离 Distance from river | 雄株 Male | 雌株 Female | 性比 Sex ratio | ||||
---|---|---|---|---|---|---|---|
数量 Number | 密度 Density (ind.·hm-2) | 平均胸径 DBH (cm) | 数量 Number | 密度 Density (ind.·hm-2) | 平均胸径 DBH (cm) | ||
0-10 m | 1 546 | 197.28 | 35.93 ± 0.29a | 1 339 | 170.86 | 34.51 ± 0.29ab | 1.15 |
10-30 m | 882 | 102.85 | 34.43 ± 0.43ab | 982 | 114.51 | 33.90 ± 0.37bc | 0.90 |
30-60 m | 544 | 96.44 | 32.48 ± 0.54cd | 480 | 85.10 | 31.81 ± 0.55de | 1.13 |
> 60 m | 202 | 75.92 | 30.65 ± 0.76ef | 204 | 76.67 | 29.86 ± 0.83f | 0.99 |
Table 3 The number, density, average diameter at breast height (DBH) and sex ratio of female and male Populus cathayana trees at different distances from the Jinhegou River in Xiaowutai Mountains (mean ± SE)
与河岸距离 Distance from river | 雄株 Male | 雌株 Female | 性比 Sex ratio | ||||
---|---|---|---|---|---|---|---|
数量 Number | 密度 Density (ind.·hm-2) | 平均胸径 DBH (cm) | 数量 Number | 密度 Density (ind.·hm-2) | 平均胸径 DBH (cm) | ||
0-10 m | 1 546 | 197.28 | 35.93 ± 0.29a | 1 339 | 170.86 | 34.51 ± 0.29ab | 1.15 |
10-30 m | 882 | 102.85 | 34.43 ± 0.43ab | 982 | 114.51 | 33.90 ± 0.37bc | 0.90 |
30-60 m | 544 | 96.44 | 32.48 ± 0.54cd | 480 | 85.10 | 31.81 ± 0.55de | 1.13 |
> 60 m | 202 | 75.92 | 30.65 ± 0.76ef | 204 | 76.67 | 29.86 ± 0.83f | 0.99 |
指标 Indices | 含水量 Water content (%) | pH | 有机质 Organic matter (%) | 总N Total N (g·kg-1) | 总P Total P (g·kg-1) | 总K Total K (g·kg-1) | 有效N Available N (g·kg-1) | 有效P Available P (mg·kg-1) | 有效K Available K (g·kg-1) | |
---|---|---|---|---|---|---|---|---|---|---|
海拔 Altitude (m) | 1 300-1 400 | 31.24 ± 0.27e | 7.20 ± 0.01a | 6.38 ± 0.05e | 4.00 ± 0.06d | 0.94 ± 0.01d | 13.26 ± 0.04b | 0.25 ± 0.01e | 6.94 ± 0.07e | 0.21 ± 0.01e |
1 400-1 500 | 48.08 ± 0.42b | 7.21 ± 0.01a | 10.89 ± 0.11c | 5.30 ± 0.05c | 1.03 ± 0.01b | 13.04 ± 0.01c | 0.35 ± 0.01d | 9.92 ± 0.12c | 0.33 ± 0.01a | |
1 500-1 600 | 42.38 ± 0.15c | 7.03 ± 0.01c | 10.52 ± 0.03d | 5.32 ± 0.02c | 0.94 ± 0.01d | 13.09 ± 0.01c | 0.39 ± 0.01c | 10.96 ± 0.04b | 0.26 ± 0.01d | |
1 600-1 700 | 40.28 ± 0.23d | 7.02 ± 0.01c | 11.42 ± 0.07b | 5.66 ± 0.04b | 0.96 ± 0.01c | 13.05 ± 0.01c | 0.40 ± 0.01b | 11.74 ± 0.06a | 0.28 ± 0.01c | |
1 700-1 800 | 52.27 ± 0.49a | 7.13 ± 0.01b | 13.48 ± 0.21a | 6.82 ± 0.11a | 1.10 ± 0.01a | 13.81 ± 0.03a | 0.45 ± 0.01a | 9.19 ± 0.11d | 0.29 ± 0.01b | |
平均值 Mean | 43.21 | 7.08 | 10.76 | 5.4 | 0.97 | 13.31 | 0.38 | 10.7 | 0.28 | |
河距 Distance from river (m) | 0-10 | 44.38 ± 0.22a | 7.10 ± 0.01a | 10.91 ± 0.06a | 5.49 ± 0.03a | 0.98 ± 0.01a | 13.02 ± 0.01d | 0.37 ± 0.01c | 10.44 ± 0.06c | 0.28 ± 0.01a |
10-30 | 42.69 ± 0.26b | 7.07 ± 0.11b | 10.79 ± 0.07a | 5.42 ± 0.03a | 0.97 ± 0.01b | 13.08 ± 0.01c | 0.38 ± 0.01bc | 10.79 ± 0.07b | 0.27 ± 0.01b | |
30-60 | 41.47 ± 0.27c | 7.11 ± 0.01a | 10.46 ± 0.08b | 5.21 ± 0.04b | 0.96 ± 0.01b | 13.27 ± 0.01b | 0.39 ± 0.01b | 11.15 ± 0.09a | 0.28 ± 0.01a | |
> 60 | 41.91 ± 0.27bc | 6.91 ± 0.02c | 10.39 ± 0.05b | 5.24 ± 0.04b | 0.92 ± 0.01c | 13.32 ± 0.02a | 0.40 ± 0.01a | 11.02 ± 0.09ab | 0.26 ± 0.01c |
Table 4 The soil properties at different altitudes or distances from the Jinhegou River in Xiaowutai Mountains (mean ± SE)
指标 Indices | 含水量 Water content (%) | pH | 有机质 Organic matter (%) | 总N Total N (g·kg-1) | 总P Total P (g·kg-1) | 总K Total K (g·kg-1) | 有效N Available N (g·kg-1) | 有效P Available P (mg·kg-1) | 有效K Available K (g·kg-1) | |
---|---|---|---|---|---|---|---|---|---|---|
海拔 Altitude (m) | 1 300-1 400 | 31.24 ± 0.27e | 7.20 ± 0.01a | 6.38 ± 0.05e | 4.00 ± 0.06d | 0.94 ± 0.01d | 13.26 ± 0.04b | 0.25 ± 0.01e | 6.94 ± 0.07e | 0.21 ± 0.01e |
1 400-1 500 | 48.08 ± 0.42b | 7.21 ± 0.01a | 10.89 ± 0.11c | 5.30 ± 0.05c | 1.03 ± 0.01b | 13.04 ± 0.01c | 0.35 ± 0.01d | 9.92 ± 0.12c | 0.33 ± 0.01a | |
1 500-1 600 | 42.38 ± 0.15c | 7.03 ± 0.01c | 10.52 ± 0.03d | 5.32 ± 0.02c | 0.94 ± 0.01d | 13.09 ± 0.01c | 0.39 ± 0.01c | 10.96 ± 0.04b | 0.26 ± 0.01d | |
1 600-1 700 | 40.28 ± 0.23d | 7.02 ± 0.01c | 11.42 ± 0.07b | 5.66 ± 0.04b | 0.96 ± 0.01c | 13.05 ± 0.01c | 0.40 ± 0.01b | 11.74 ± 0.06a | 0.28 ± 0.01c | |
1 700-1 800 | 52.27 ± 0.49a | 7.13 ± 0.01b | 13.48 ± 0.21a | 6.82 ± 0.11a | 1.10 ± 0.01a | 13.81 ± 0.03a | 0.45 ± 0.01a | 9.19 ± 0.11d | 0.29 ± 0.01b | |
平均值 Mean | 43.21 | 7.08 | 10.76 | 5.4 | 0.97 | 13.31 | 0.38 | 10.7 | 0.28 | |
河距 Distance from river (m) | 0-10 | 44.38 ± 0.22a | 7.10 ± 0.01a | 10.91 ± 0.06a | 5.49 ± 0.03a | 0.98 ± 0.01a | 13.02 ± 0.01d | 0.37 ± 0.01c | 10.44 ± 0.06c | 0.28 ± 0.01a |
10-30 | 42.69 ± 0.26b | 7.07 ± 0.11b | 10.79 ± 0.07a | 5.42 ± 0.03a | 0.97 ± 0.01b | 13.08 ± 0.01c | 0.38 ± 0.01bc | 10.79 ± 0.07b | 0.27 ± 0.01b | |
30-60 | 41.47 ± 0.27c | 7.11 ± 0.01a | 10.46 ± 0.08b | 5.21 ± 0.04b | 0.96 ± 0.01b | 13.27 ± 0.01b | 0.39 ± 0.01b | 11.15 ± 0.09a | 0.28 ± 0.01a | |
> 60 | 41.91 ± 0.27bc | 6.91 ± 0.02c | 10.39 ± 0.05b | 5.24 ± 0.04b | 0.92 ± 0.01c | 13.32 ± 0.02a | 0.40 ± 0.01a | 11.02 ± 0.09ab | 0.26 ± 0.01c |
指标 Indices | 含水量 Water content (%) | pH | 有机质 Organic matter (%) | 总N Total N (g·kg-1) | 总P Total P (g·kg-1) | 总K Total K (g·kg-1) | 有效N Available N (g·kg-1) | 有效P Available P (mg·kg-1) | 有效K Available K (g·kg-1) |
---|---|---|---|---|---|---|---|---|---|
雌株 Female | 40.64 ± 2.64 | 7.00 ± 0.09 | 11.23 ± 0.85 | 5.39 ± 0.25 | 0.95 ± 0.03 | 13.01 ± 0.14 | 0.39 ± 0.01 | 12.06 ± 1.12 | 0.23 ± 0.01 |
雄株 Male | 39.78 ± 2.06 | 6.99 ± 0.10 | 8.54 ± 0.45 | 4.10 ± 0.34 | 0.90 ± 0.03 | 13.15 ± 0.17 | 0.34 ± 0.02 | 9.74 ± 0.66 | 0.24 ± 0.02 |
P值 Probability | 0.699 | 0.818 | 0.004 | 0.015 | 0.31 | 0.699 | 0.18 | 0.093 | 1 |
显著性 Significance | ns | ns | ** | * | ns | ns | ns | ns | ns |
Table 5 The soil properties in dominant distribution area of female and male Populus cathayana trees in Xiaowutai Mountains (mean ± SE, n = 6)
指标 Indices | 含水量 Water content (%) | pH | 有机质 Organic matter (%) | 总N Total N (g·kg-1) | 总P Total P (g·kg-1) | 总K Total K (g·kg-1) | 有效N Available N (g·kg-1) | 有效P Available P (mg·kg-1) | 有效K Available K (g·kg-1) |
---|---|---|---|---|---|---|---|---|---|
雌株 Female | 40.64 ± 2.64 | 7.00 ± 0.09 | 11.23 ± 0.85 | 5.39 ± 0.25 | 0.95 ± 0.03 | 13.01 ± 0.14 | 0.39 ± 0.01 | 12.06 ± 1.12 | 0.23 ± 0.01 |
雄株 Male | 39.78 ± 2.06 | 6.99 ± 0.10 | 8.54 ± 0.45 | 4.10 ± 0.34 | 0.90 ± 0.03 | 13.15 ± 0.17 | 0.34 ± 0.02 | 9.74 ± 0.66 | 0.24 ± 0.02 |
P值 Probability | 0.699 | 0.818 | 0.004 | 0.015 | 0.31 | 0.699 | 0.18 | 0.093 | 1 |
显著性 Significance | ns | ns | ** | * | ns | ns | ns | ns | ns |
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