海南岛霸王岭热带云雾林木本植物功能性状的分异规律
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海南大学热带作物种质资源保护与开发利用教育部重点实验室;海南大学园艺园林学院,海南大学热带作物种质资源保护与开发利用教育部重点实验室;海南大学园艺园林学院,海南大学园艺园林学院,海南大学热带作物种质资源保护与开发利用教育部重点实验室;海南大学园艺园林学院,海南大学热带作物种质资源保护与开发利用教育部重点实验室;海南大学园艺园林学院,中国林业科学研究院森林生态环境与保护研究所,国家林业局森林生态环境重点实验室,海南大学热带作物种质资源保护与开发利用教育部重点实验室;海南大学园艺园林学院,海南大学环境与植物保护学院

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国家自然科学基金项目(31260109);海南自然科学基金创新研究团队项目(2016CXTD003);海南大学青年基金项目(qnjj1210);海南省自然基金项目(312064);科技基础专项(2013FY111600-3);海南大学优秀研究生论文培育计划


Variation in woody plant functional traits of the tropical cloud forests in Bawangling, Hainan Island
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Key Laboratory of Tropical Crop Germplasm Resources Protection and development and utilization of the Ministry of education, Hainan University;College of horticulture and landscape architecture, Hainan University,Key Laboratory of Tropical Crop Germplasm Resources Protection and development and utilization of the Ministry of education, Hainan University;College of horticulture and landscape architecture, Hainan University,,Key Laboratory of Tropical Crop Germplasm Resources Protection and development and utilization of the Ministry of education, Hainan University;College of horticulture and landscape architecture, Hainan University,Key Laboratory of Tropical Crop Germplasm Resources Protection and development and utilization of the Ministry of education, Hainan University;College of horticulture and landscape architecture, Hainan University,,,

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    摘要:

    研究植物功能性状的分异,有助于理解植物适应环境的方式和策略,也能为预测物种分布和环境变化提供依据。以海南霸王岭热带云雾林为对象,建立21个20 m×20 m固定样方,划分为336个5 m×5 m小样方;测定胸径在5cm以上所有乔灌木植物个体的功能性状(叶面积LA;叶干重LDW;比叶重LMA;叶绿素含量Chl;叶厚度LTh;木材密度WD)和土壤养分含量,通过方差分解分析植物功能性状在个体、种内、种间、群落水平的分异大小,探究土壤养分对功能性状分异的影响。结果表明,LA、LDW、LMA、CHl、LTh、WD在个体、种内、种间、群落水平的解释方差范围分别为0.06-0.47、0.09-0.35、0.35-0.72、0-0.07,在个体、种内、种间、群落层次上,种间水平的功能性状分异最大,而群落水平的分异最小。逐步回归分析表明,不同尺度的功能性状变化与土壤有机质、氮和磷含量都有密切关系。

    Abstract:

    The variation in plant functional traits can help us understand adaption mechanisms to different environments and predict the distribution of species and environmental changes. Twenty-one, 20 m×20 m plots were established and divided into 336, 5 m×5 m subplots in the tropical cloud forests in Bawangling, Hainan Island. Functional traits (i.e., leaf area[LA], leaf dry weight[LDW], leaf mass per area[LMA], leaf chlorophyll content[Chl], leaf thickness[LTh], and wood density[WD]) of all trees and shrubs with diameter at breast height over 5 cm, as well as soil nutrient contents, were measured in all plots. The magnitude of variation in each functional trait at individual plant, within-species, among-species, and community levels were assessed using a generalized linear model, whereas the relationships between soil nutrients and functional traits were examined using a stepwise linear regression. Results showed that the ranges of explained variance for LDW, LMA, CHl, LTh, LA, and WD were 0.06-0.47, 0.09-0.35, 0.35-0.72, and 0-0.07 for the individual, within-species, among-species, and community levels, respectively. This indicates that the magnitude of variation in functional traits was the highest at the among-species level and the lowest at the community level. The stepwise regression analysis showed that the changes of functional traits at all studied scales were significantly correlated with soil organic matter, nitrogen, and phosphorus.

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康勇,熊梦辉,黄瑾,龙文兴,杨小波,臧润国,王茜茜,林灯.海南岛霸王岭热带云雾林木本植物功能性状的分异规律.生态学报,2017,37(5):1572~1582

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