植物研究 ›› 2025, Vol. 45 ›› Issue (6): 997-1002.doi: 10.7525/j.issn.1673-5102.2025.06.016
• 研究论文 • 上一篇
收稿日期:2024-11-30
出版日期:2025-11-20
发布日期:2025-11-27
通讯作者:
王铁娟
E-mail:wtj105@163.com
作者简介:都兰(1999—),女,硕士研究生,主要从事植物生态学研究。
基金资助:
Lan DU, Tiejuan WANG(
), Xuemeng ZHOU, Rui ZHANG, Bingbing ZHANG, Jing FENG
Received:2024-11-30
Online:2025-11-20
Published:2025-11-27
Contact:
Tiejuan WANG
E-mail:wtj105@163.com
摘要:
为了研究珍稀濒危植物沙冬青(Ammopiptanthus mongolicus)受到的竞争影响,选择沙冬青与霸王(Zygophyllum xanthoxylum)群落交错区,利用Hegyi单木竞争模型,通过对25株沙冬青对象木的调查,分析沙冬青的种内与种间竞争关系。结果表明:沙冬青的种内和种间竞争强度分别占总竞争强度(341.32)的5.09%和94.91%,说明沙冬青的竞争主要来源于种间。群落交错区内沙冬青的竞争木种类较多,竞争强度由大到小依次为内蒙古旱蒿(Artemisia xerophytica)、矮脚锦鸡儿(Caragana brachypoda)、霸王、猫头刺(Oxytropis aciphylla)、沙冬青、长叶红砂(Reaumuria trigyna)、驼绒藜(Krascheninnikovia ceratoides)、红砂(Reaumuria soongarica)、绵刺(Potaninia mongolica)、戈壁天门冬(Asparagus gobicus)。种间竞争指数和总竞争指数与沙冬青冠幅之间的关系均近似服从幂函数关系,竞争强度随对象木冠幅的增加而减小。当对象木的冠幅小于1.0 m时,受到的竞争压力较大,所得的模型能很好地反映沙冬青受到的竞争强度。
中图分类号:
都兰, 王铁娟, 周雪萌, 张蕊, 张冰冰, 冯婧. 沙冬青与霸王群落交错区种内与种间竞争关系[J]. 植物研究, 2025, 45(6): 997-1002.
Lan DU, Tiejuan WANG, Xuemeng ZHOU, Rui ZHANG, Bingbing ZHANG, Jing FENG. Intraspecific and Interspecific Competition Relationship Between Ammopiptanthus mongolicus and Zygophyllum xanthoxylum in theEcotone[J]. Bulletin of Botanical Research, 2025, 45(6): 997-1002.
表1
沙冬青种内与种间竞争强度
对象木冠幅级 Target tree crown width scale/m | 种内竞争 Intraspecific competition | 种间竞争 Interspecific competition | 总竞争 Total competition | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
对象木株数 Number of target tree | 竞争木株数 Number of competitive tree | 竞争指数 Competition index | 平均竞争指数 Averaged competition index | 对象木株数 Number of target tree | 竞争木株数 Number of competitive tree | 竞争指数 Competition index | 平均竞争指数 Averaged competition index | 对象木株数 Number of target tree | 竞争木株数 Number of competitive tree | 竞争指数 Competition index | 平均竞争指数 Averaged competition index | |
总计/均值 Total/mean | 16 | 32 | 17.37 | 1.09 | 25 | 1 032 | 323.95 | 12.96 | 25 | 1 064 | 341.32 | 13.65 |
| (0,0.5] | 1 | 3 | 3.07 | 3.07 | 2 | 68 | 114.20 | 57.10 | 2 | 71 | 117.26 | 58.63 |
| (0.5,1.0] | 9 | 17 | 10.58 | 1.18 | 13 | 572 | 160.75 | 12.37 | 13 | 589 | 171.33 | 13.18 |
| (1.0,1.5] | 5 | 11 | 3.57 | 0.71 | 6 | 227 | 39.09 | 6.52 | 6 | 238 | 42.67 | 7.11 |
| (1.5,2.0] | 0 | 0 | 0 | — | 1 | 34 | 3.65 | 3.65 | 1 | 34 | 3.65 | 3.65 |
| >2.0 | 1 | 1 | 0.15 | 0.15 | 3 | 131 | 6.26 | 2.09 | 3 | 132 | 6.41 | 2.14 |
表2
竞争木的种类组成与竞争强度
种名 Species | 株数 Number | 占总株数百分比 Percentage of total number/% | 平均冠幅 Average of crown width/cm | 竞争指数 Competition index | 平均竞争指数 Average of competition index | 竞争指数百分比 Percentage of competition index/% | 竞争指数排名 Competition index ranking |
|---|---|---|---|---|---|---|---|
总计/均值 Total/mean | — | 100.00 | — | 341.32 | — | 100.00 | — |
内蒙古旱蒿 Artemisia xerophytica | 374 | 35.15 | 32.37 | 144.03 | 0.39 | 42.20 | 1 |
矮脚锦鸡儿 Caragana brachypoda | 472 | 44.36 | 32.53 | 121.80 | 0.26 | 35.68 | 2 |
霸王 Zygophyllum xanthoxylum | 56 | 5.26 | 98.93 | 32.25 | 0.58 | 9.45 | 3 |
猫头刺 Oxytropis aciphylla | 108 | 10.15 | 21.56 | 21.99 | 0.20 | 6.44 | 4 |
沙冬青 Ammopiptanthus mongolicus | 32 | 3.01 | 70.44 | 17.37 | 0.54 | 5.09 | 5 |
长叶红砂 Reaumuria trigyna | 12 | 1.13 | 26.54 | 1.62 | 0.13 | 0.47 | 6 |
驼绒藜 Krascheninnikovia ceratoides | 4 | 0.38 | 30.63 | 0.97 | 0.24 | 0.28 | 7 |
红砂 Reaumuria soongarica | 2 | 0.19 | 65.25 | 0.88 | 0.44 | 0.26 | 8 |
绵刺 Potaninia mongolica | 3 | 0.28 | 57.17 | 0.36 | 0.12 | 0.11 | 9 |
戈壁天门冬 Asparagus gobicus | 1 | 0.09 | 6.00 | 0.05 | 0.05 | 0.02 | 10 |
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