西山国家森林公园人工侧柏林种内与种间竞争的数量关系

周荣伍; 安玉涛; 王浩; 任云卯; 王奇峰; 何宝华; 陈鹏飞; 林大影

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西山国家森林公园人工侧柏林种内与种间竞争的数量关系

周荣伍, 安玉涛, 王浩, 任云卯, 王奇峰, 何宝华, 陈鹏飞, 林大影

文章导航 > 北京林业大学学报 > 2010 > 32(6): 27-32

周荣伍, 安玉涛, 王浩, 任云卯, 王奇峰, 何宝华, 陈鹏飞, 林大影. 西山国家森林公园人工侧柏林种内与种间竞争的数量关系[J]. 北京林业大学学报, 2010, 32(6): 27-32.

引用本文:

ZHOU Rong-wu, AN Yu-tao, WANG Hao, REN Yun-mao, WANG Qi-feng, HE Bao-hua, CHEN Peng-fei, LIN Da-ying. Quantitative relationships of intra- and interspecific competition of Platycladus orientalis plantation in Beijing Xishan National Forest Park[J]. Journal of Beijing Forestry University, 2010, 32(6): 27-32.

Citation:

ZHOU Rong-wu, AN Yu-tao, WANG Hao, REN Yun-mao, WANG Qi-feng, HE Bao-hua, CHEN Peng-fei, LIN Da-ying. Quantitative relationships of intra- and interspecific competition of Platycladus orientalis plantation in Beijing Xishan National Forest Park[J]. Journal of Beijing Forestry University, 2010, 32(6): 27-32.

西山国家森林公园人工侧柏林种内与种间竞争的数量关系

1.
北京市西山试验林场

Quantitative relationships of intra- and interspecific competition of Platycladus orientalis plantation in Beijing Xishan National Forest Park

1.
Beijing Xishan Experimental Forest Farm, 100093, P. R. China.

摘要: 为了解北京西山国家森林公园人工侧柏中幼龄林的群落结构及生长状况，运用Hegyi的单木竞争指数计算分析了人工侧柏林对象木和竞争木间的种内和种间竞争强度。结果表明：1)随着物种间距离的增大，人工侧柏中幼龄林总竞争强度的增量逐渐减少，从而确定影响对象木的最佳竞争范围是6 m。2)在最佳竞争影响范围内，侧柏林物种间竞争压力更多地来自于种内竞争，占总竞争的73.03%；种间竞争强度不大，占总竞争的26.97%，其中种间竞争强度较大的树种主要是天然更新的刺槐，在4 m范围内与侧柏物种的竞争强度最大，在营造侧柏和刺槐的混交林中，要保证株间距在4 m以上。3)随着侧柏对象木胸径的增大，所受到的总体竞争指数逐渐减小，胸径在15 cm以内所受到的竞争强度较大，侧柏中幼龄林所受到的竞争强度与其对象木胸径之间的关系符合幂函数关系。
- 西山国家森林公园 /
- 侧柏林 /
- 种内竞争 /
- 种间竞争 /
- 竞争指数
Abstract: In order to investigate the growth status and structure of middle and young stands of Platycladus orientalis plantation in the Beijing Xishan National Forest Park, the intra- and interspecific competition intensity was analyzed between target and competitive tree species using the Hegyi’s competition index (CI). The results showed that 1) the competition intensity increment of middle and young P. orientalis stands became smaller with the increasing distance between species, indicating that the optimal competition distance of the target trees is 6 m. 2) Within the optimal competition distance, the competition stress to the middle and young stands mainly came from the interspecific competition, which accounted for 73.03 percent of the total; the intraspecific competition was weak, accounting for 26.97 percent of the total competition. The most competitive species with P. orientalis was natural renewal Robinia pseudoacacia. The competitive intensity between P. orientalis and R. pseudoacacia reached maximum within 4 m limits. Thus in order to avoid intensive competition, the interval distance of mixed forest of P. orientalis and R. pseudoacacia should be set above 4 m. 3) The competition intensity of P. orientalis became declined with the increase of DBH and the stress reached the maximum when DBH of target trees was less than 15 cm. The relationship between competition intensity and DBH of the target trees followed the relationship of power function.
- Beijing Xishan National Forest Park /
- Platycladus orientalis plantation /
- intraspecific competition /
- interspecific competition /
- competition index

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西山国家森林公园人工侧柏林种内与种间竞争的数量关系

1. 北京市西山试验林场

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2010-11-30

关键词:

侧柏林 /

摘要: 为了解北京西山国家森林公园人工侧柏中幼龄林的群落结构及生长状况，运用Hegyi的单木竞争指数计算分析了人工侧柏林对象木和竞争木间的种内和种间竞争强度。结果表明：1)随着物种间距离的增大，人工侧柏中幼龄林总竞争强度的增量逐渐减少，从而确定影响对象木的最佳竞争范围是6 m。2)在最佳竞争影响范围内，侧柏林物种间竞争压力更多地来自于种内竞争，占总竞争的73.03%；种间竞争强度不大，占总竞争的26.97%，其中种间竞争强度较大的树种主要是天然更新的刺槐，在4 m范围内与侧柏物种的竞争强度最大，在营造侧柏和刺槐的混交林中，要保证株间距在4 m以上。3)随着侧柏对象木胸径的增大，所受到的总体竞争指数逐渐减小，胸径在15 cm以内所受到的竞争强度较大，侧柏中幼龄林所受到的竞争强度与其对象木胸径之间的关系符合幂函数关系。

English Abstract

Quantitative relationships of intra- and interspecific competition of Platycladus orientalis plantation in Beijing Xishan National Forest Park

1. Beijing Xishan Experimental Forest Farm, 100093, P. R. China.

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2010-11-30

Keywords:

Abstract: In order to investigate the growth status and structure of middle and young stands of Platycladus orientalis plantation in the Beijing Xishan National Forest Park, the intra- and interspecific competition intensity was analyzed between target and competitive tree species using the Hegyi’s competition index (CI). The results showed that 1) the competition intensity increment of middle and young P. orientalis stands became smaller with the increasing distance between species, indicating that the optimal competition distance of the target trees is 6 m. 2) Within the optimal competition distance, the competition stress to the middle and young stands mainly came from the interspecific competition, which accounted for 73.03 percent of the total; the intraspecific competition was weak, accounting for 26.97 percent of the total competition. The most competitive species with P. orientalis was natural renewal Robinia pseudoacacia. The competitive intensity between P. orientalis and R. pseudoacacia reached maximum within 4 m limits. Thus in order to avoid intensive competition, the interval distance of mixed forest of P. orientalis and R. pseudoacacia should be set above 4 m. 3) The competition intensity of P. orientalis became declined with the increase of DBH and the stress reached the maximum when DBH of target trees was less than 15 cm. The relationship between competition intensity and DBH of the target trees followed the relationship of power function.

引用本文:

Citation:

ZHOU Rong-wu, AN Yu-tao, WANG Hao, REN Yun-mao, WANG Qi-feng, HE Bao-hua, CHEN Peng-fei, LIN Da-ying. Quantitative relationships of intra- and interspecific competition of Platycladus orientalis plantation in Beijing Xishan National Forest Park[J]. Journal of Beijing Forestry University, 2010, 32(6): 27-32.