Dioecious plants are often used in landscaping because of sex differences in individual appearance, resistance and ornamental value. Although a large number of studies have investigated the overall differences in resource allocation between different sexes in dioecious plants, the effects of environmental factors such as temperature and precipitation on resource allocation in sex-dimorphic plants are not fully understood. In order to explore the influencing factors, 39 works of literature on dioecious plant resource allocation published in English databases from 1992 to 2023 were selected, and the biomass data of dioecious plant stems, leaves, flowers and fruits from these pieces of literature were extracted. A total of 545 independent experimental groups were obtained, which were divided into four groups for analysis, and the data were analyzed using METAWIN 2.1 software. Four sets of data were used to quantitatively study the effects of different temperatures, precipitations and life forms on the resource allocation of dioecious plants of different sexes in large-scale space. The results showed that female plants invested more resources in reproductive growth and less resources in vegetative growth. In terms of total biomass, the average biomass of female plants was 3.09% higher than that of male plants, indicating that female plants reduced nutrient investment to compensate for reproductive investment in the process of resource allocation. Temperature and precipitation significantly affect the adaptability of male and female plants to environmental changes and the cooperative relationships among the stressed components. The vegetative biomass investment of female plants showed a positive correlation with the increase in temperature, while the reproductive biomass showed a negative correlation with the decrease. The average annual precipitation had little effect on the vegetative biomass of dioecious plants, but had a significant effect on reproductive biomass. The study of this trade-off relationship is helpful in revealing the relationship between vegetative growth and reproductive growth of plants, exploring the countermeasures of plant life history, and providing a scientific basis for urban landscaping and urban forest management.

中文翻译：

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温度和降水显着影响雌雄异株植物的资源分配：荟萃分析

雌雄异体植物因个体外观、抵抗力和观赏价值等方面存在性别差异，常用于园林绿化。尽管大量研究调查了雌雄异株植物不同性别之间资源分配的总体差异，但温度和降水等环境因素对两性植物资源分配的影响尚不完全清楚。为了探究其影响因素，选取了1992年至2023年在英文数据库中发表的39篇雌雄异株植物资源配置文献，并从这些文献中提取了雌雄异株植物茎、叶、花和果实的生物量数据。共获得545个独立实验组，分为4组进行分析，使用METAWIN 2.1软件对数据进行分析。利用四组数据定量研究了不同温度、降水和生命形式对大尺度空间内不同性别雌雄异株植物资源配置的影响。结果表明，雌性植物在生殖生长上投入较多的资源，在营养生长上投入较少的资源。从总生物量来看，雌性植物的平均生物量比雄性植物高3.09%，表明雌性植物在资源配置过程中减少了养分投入以补偿生殖投资。温度和降水显着影响雄性和雌性植物对环境变化的适应性以及胁迫成分之间的合作关系。雌株营养生物量投入与温度升高呈正相关，而生殖生物量与温度降低呈负相关。年平均降水量对雌雄异株植物的营养生物量影响不大，但对生殖生物量影响显着。研究这种权衡关系，有助于揭示植物营养生长与生殖生长的关系，探索植物生活史的对策，为城市园林绿化和城市森林管理提供科学依据。