植物遗传多样性与生态系统功能关系的研究进展
张俪文,韩广轩

A review on the relationships between plant genetic diversity and ecosystem functioning
ZHANG Li-Wen,HAN Guang-Xuan
表2 主要遗传多样性-生态系统功能关系机制假说
Table 2 Main genetic diversity-ecosystem functioning hypotheses
效应类别(按生物学角度来分类)
Types of genetic diversity effects (in terms of biology)
效应区别
The differences among types of genetic diversity effect
生态系统功能
Ecosystem
functioning
相关机制
假说
Hypothesis
假说内容
Content of hypothesis
加性效应
Additive effects
不同基因型对生态系统功能的效应是独立的、可加的; 基因型间相互作用不影响其生态系统功能效应。
The effects of different genotypes on ecosystem functioning are independent and additive, and the interactions among genotypes do not affect their effects on ecosystem functioning.
高营养级生物群落
结构、初级生产力、养分循环、生态系统稳定性
Community structure of higher trophic levels, primary productivity, nutrientcycling and ecosystem stability
优势效应
Dominant
effect
基因型多样性高的系统中包含对系统有利的基因型概率高于单基因型系统, 因此基因型多样性高有利于维持生态系统结构和功能。验证方法请见1.1和1.2节。
Systems with high genotypic diversity have a higher probability of containing genotypes beneficial to the system than those with single genotype, and thus high genotypic diversity is conducive to maintaining ecosystem structure and function. Please see sections 1.1 and 1.2 for the methods for testing this hypotheses.
非加性效应
Non-additive effects
不同基因型对生态系统功能效应是非独立的、不可加的; 基因型间相互作用对生态系统功能产生交互效应。The effects of different genotypes on ecosystem functioning are dependent and nonadditive, and the interactions among genotypes affect their effects on ecosystem functioning. 高营养级生物群落结构
Community structure of higher trophic levels
资源化假说
The resource
specialization hypothesis
大多数植食性节肢动物表现出一定程度的食性偏好, 随着基因型多样性的增加, 相关联的植食性节肢动物多样性也增加。验证方法请见1.1节。
Most of the herbivorous arthropods showed food preference. With the increase of genotypic diversity, the diversity of associated herbivorous arthropods also increased. Please see Section 1.1 for the methods for testing this hypothesis.
更多个体假说
The more
individuals
hypothesis
如果地上净生产力随着基因型多样性升高, 那么能够提供更多的能量给更多植食性节肢动物, 这些植食性节肢动物多样性随之增加, 继而捕食者也会增加。验证方法请见1.1节。
If net aboveground productivity increases with genotypic diversity, more energy can be provided to more herbivorous arthropods, and the diversity of these herbivorous arthropods increases, followed by increased predators. Please see Section 1.1 for the methods for testing this hypothesis.
初级生产力、养分循环、生态系统稳定性
Primary productivity, nutrient cycling and ecosystem stability
性状独立互补效应
Trait-indepen-dent complementarity
在多基因型系统, 如果某些基因型的生态系统功能比它们在单基因型系统提高了, 但与基因型的功能性状无关, 而且不以抑制其他基因型的适合度为代价(不同基因型占据不重叠的生态位形成生态位互补或者基因型间存在正作用), 则为正效应。验证方法请见1.2节。
In genotypic mixture, if the ecosystem functions of some genotypes are improved than that in the genotypic monoculture but are not related to the functional traits of the genotypes, and are also not at the expense of inhibiting the fitness of other genotypes (different genotypes occupy non-overlapping niches to form niche complementarities or have positive effects between genotypes). It is a positive effect. Please see section 1.2 for the methods for testing this hypothesis.
性状依赖互补效应
Trait-dependent complementarity
在多基因型系统, 如果具有特殊功能性状基因型(比如, 特殊功能性状使得基因型间形成嵌套生态位)的生态功能比其在单基因型系统增加了, 且不以抑制其他基因型适合度为代价, 则为正效应。验证方法请见1.2节。
In genotypic mixture, if the ecological functions of genotypes with special functional traits (for example, the nested niches formed between genotypes) are increased than those of genotypic monoculture, and not at the expense of inhibiting the fitness of other genotypes, the effect is positive. Please see section 1.2 the methods for testing this hypothesis.