| 濒危植物桫椤个体生态场梯度的研究 |
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| 引用本文： | 宋萍,洪伟,吴承祯,封磊,范海兰,刘用心.濒危植物桫椤个体生态场梯度的研究[J].热带亚热带植物学报,2009,17(1):62-67. |
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| 作者姓名： | 宋萍 洪伟 吴承祯 封磊 范海兰 刘用心 |
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| 作者单位： | 1. 福建农林大学,林学院,福州,350002
2. 福建农林大学,资源与环境学院,福州,350002 |
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| 基金项目： | 福建农林大学青年教师科研基金，福建省自然科学基金 |
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| 摘 要： | 通过构建濒危植物桫椤(Alsophila spinulosa)个体生态场梯度模型,研究桫椤个体生态场梯度的变化特征.随着与场源距离的增加,桫椤个体生态场梯度先逐渐升高,达到最大值后又逐渐降低并收敛于零,其变化形式符合Rayleigh分布.不同地段的桫椤种群个体场梯度大小变化幅度不同,最大场梯度值以及出现最大场梯度时的作用妹距离亦不相同.随作用距离增加,场梯度的收敛速度差异增大.
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| 关 键 词： | 桫椤 个体生态场 生态场梯度 生态势 |
| 收稿时间： | 3/4/2008 12:00:00 AM |
| 修稿时间： | 2008/9/20 0:00:00 |
Study on the Individual Ecological Field Gradient of the Endangered Plant Alsophila spinulos |
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| SONG Ping,HONG Wei,WU Cheng-zhen,FENG Lei,FAN Hai-lan and LIU Yong-xin.Study on the Individual Ecological Field Gradient of the Endangered Plant Alsophila spinulos[J].Journal of Tropical and Subtropical Botany,2009,17(1):62-67. |
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| Authors: | SONG Ping HONG Wei WU Cheng-zhen FENG Lei FAN Hai-lan and LIU Yong-xin |
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| Institution: | a. College of Forestry;b. College of Resources and Environment;Fujian Agriculture and Forestry University;Fuzhou 350002;China |
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| Abstract: | Characteristics of the individual ecological field gradient of the endangered plant Alsophila spinulosa was studied by constructing the individual ecological field gradient model. With the increment of the distances to field source plants, the individual ecological field gradients of Alsophila spinulosa increased gradually at first to the maximal values, then decreased gradually and converged at zero at last. The varying form fitted Rayleigh distribution. Variances were found among the varying amplitudes of... |
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| Keywords: | Alsophila spinulosa Individual ecological field Gradient of ecological field Ecological potential |
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