摘要
物种多样性作为生物多样性重要组成之一,与生产力密切相关。文中围绕目前物种多样性与森林生产力存在的4种相关关系展开论述。在大量草地生态系统中物种均匀度和丰富度的增加更有利于促进生产力,而在群落结构和组成起决定作用的自然群落中,生产力不受物种多样性的影响,在人工草地群落中物种多样性甚至会降低生产力,随着森林演替过程物种多样性和生产力呈现非线性关系。样地丰富度、林分结构、环境异质性及尺度被认为是造成不同生态系统物种多样性和生产力相关关系差异的主要因素。然而,目前相关研究主要集中于小尺度、均质生境,忽略了尺度、空间异质性以及优势树种对物种多样性和生产力关系的影响,因此亟待加强大尺度、复杂条件自然群落中物种多样性和生产力之间相关关系的研究。
As an important component of biodiversity,species diversity is closely related to productivity.This paper focuses on the four relationships between species diversity and forest productivity.The increase in species evenness and richness in a large number of grassland ecosystems is more conducive to promoting productivity,while productivity is not affected by species diversity in natural communities in which the structure and composition of the community play a decisive role,and even would decline because of species diversity in the pasture communities,indicating that species diversity and productivity have a nonlinear relationship during forest succession process.Land richness,stand structure,environmental heterogeneity and scale are considered as the main factors causing the differential relationship of species diversity and productivity in different ecosystems.However,the current research puts focuses on small scale and homogeneous habitats,ignoring the scale,spatial heterogeneity and the influence of dominant species on the relationship of species diversity and productivity.Therefore,it is urgent to strengthen the research on the relationship between species diversity and productivity in large-scale and complex natural communities.
作者
郭梦昭
高露双
范春雨
Guo Mengzhao;Gao Lushuang;Fan Chunyu(Key Laboratory of Forest Resources&Environmental Management of National Forestry and Grassland Administration,Beijing Forestry University,Research Center of Forest Management Engineering of National Forestry and Grassland Administration,Beijing 100083,China)
出处
《世界林业研究》
CSCD
北大核心
2019年第3期18-23,共6页
World Forestry Research
基金
国家自然科学基金(31600509
31670643)
关键词
物种多样性
生产力
样地丰富度
林分结构
环境异质性
研究尺度
species richness
productivity
land richness
stand structure
environmental heterogeneity
study scale
