| 干扰对天宝岩天然柳杉种群竞争的影响 |
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| 引用本文： | 王其炳,何东进,洪伟,ZHENG Kai-ji,郑开基,罗素梅,刘进山,蔡昌棠.干扰对天宝岩天然柳杉种群竞争的影响[J].西南林学院学报,2009,29(1):12-16. |
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| 作者姓名： | 王其炳 何东进 洪伟 ZHENG Kai-ji 郑开基 罗素梅 刘进山 蔡昌棠 |
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| 作者单位： | 1. 福建农林大学,林学院,福建,福州,350002
2. 永安天宝岩国家级自然保护区,福建,永安,366035 |
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| 基金项目： | 福建省自然科学基金，中国博士后科学基金 |
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| 摘 要： | 以永安天宝岩国家级自然保护区天然柳杉群落调查资料为基础，应用Hegyi单木竞争指数模型对比分析不同干扰强度下天然柳杉种群各种竞争指数的变化，并建立天然柳杉种群胸径与竞争指数之间的关系模型。结果表明：随着干扰强度的增大，天然柳杉林种群总竞争指数和种内竞争指数均呈明显递减趋势，即CI（1）〉CI（2）〉CI（3），CIinter（1）〉CIinter（2）〉CIinter（3），而种间竞争指数却有明显增长。竞争强度和对象木胸径的关系服从幂函数关系（CI=161．1639D^1.1126），该预测模型能很好地预测柳杉种群所受的竞争强度。
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| 关 键 词： | 柳杉 天然林 干扰 竞争 天宝岩国家级自然保护区 |
Influence of Disturbances on the Population Competition of Natural Cryptromeria fortunei in Tianbaoyan National Nature Reserve |
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| ZHENG Kai-ji.Influence of Disturbances on the Population Competition of Natural Cryptromeria fortunei in Tianbaoyan National Nature Reserve[J].Journal of Southwest Forestry College,2009,29(1):12-16. |
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| Authors: | ZHENG Kai-ji |
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| Institution: | WANG Qi-bing, HE Dong-jin, HONG Wei , ZHENG Kai-ji, LUO Su-mei, LIU Jin-shan, CAI Chang-tang (1. College of Forestry, Fujian Agriculture and Forestry University, Fuzhou Fujian 350002, China; 2. Tianbaoyan National Nature Reserve in Yong＇ an County, Yong＇ an Fujian 366035, China) |
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| Abstract: | Based on the investigation of the Cryptromeria fortunei communities in Tianbaoyan National Nature Reserve, the variation of competition index of the natural population of C. fortunei under varied disturbance intensities was analyzed by means of Hegyi single tree competition index model, and the correlation model was set up between the DBH value of the natural population of C. fortunei and the change of the competition index of C. fortunei populations under disturbance of different intensities. The mathematic model was established according to the relationship between competition index and DBH. The results showed that with the increase of the disturbance intensities, both the general competition index of the natural population of C. fortunei and the intra-specific competition index of the surveyed three sample plots decreased obviously, whereas the inter-specific competition index increased significantly. The order of the general and inner-specific competition intensity was CI（ 1 ） 〉 CI（2） 〉 CI（3 ） and CIinter （ 1 ） 〉 CIinter （2） 〉 CIinter （3）. The relationship between the competition intensity and DBH value of the studied plants closely followed the power function model as CI = 161. 163 9 · D^1.1126, and it was proven by trial tests that the model could be well used to predict the competition intensity of C. fortunei populations in this area. |
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| Keywords: | Cryptromeria fortunei natural forest disturbance competition Tianbaoyan National Nature Reserve |
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