The heterogeneity of vegetation cover, root distribution, major environmental factors and soil properties contributes to the spatial variation of soil respiration. Biotic factors have also been shown to have an effect on soil respiration.
生物因子是影响土壤呼吸作用时空动态变化的主要因素之一。
参考来源 - 土壤呼吸作用时空动态变化及其影响机制研究与展望·2,447,543篇论文数据，部分数据来源于NoteExpress
Reproductive phenology is determined by the interactions between biotic and abiotic factors and is most diverse in tropical forests.
植物的繁殖物候受生物因子和非生物环境因子的选择，在热带地区表现得非常多样。
Heredity is controlled by genes, but their expression is turned on and off throughout life depending upon biotic and abiotic factors in environment.
作物基因表达一方面受到遗传基因的控制，另一方面，环境中的生物与非生物因素对基因表达也起到重要的调节作用。
Indeed, it may be for any of the factors, physical as well as biotic, that are essential for organisms.
事实上，竞争对象可能是生命体所必须的任何生物或非生物因素。
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