气候变化领域集成服务门户(CCPortal): Temperature thresholds for Eucalyptus genotypes growth across tropical and subtropical ranges in South America

CCPortal

DOI	10.1016/j.foreco.2020.118248
	Temperature thresholds for Eucalyptus genotypes growth across tropical and subtropical ranges in South America
	Queiroz T.B.; Campoe O.C.; Montes C.R.; Alvares C.A.; Cuartas M.Z.; Guerrini I.A.
发表日期	2020
ISSN	0378-1127
卷号	472
英文摘要	Temperature is a crucial factor influencing the growth of forest plantations, and a key variable used in process-based models of forest productivity. In the present study, we evaluated the relationship between temperature and growth of seven Eucalyptus genotypes in eight sites across a 3500 km latitude gradient in South America. From 18 months after planting until 72 months of age, climatic data and tree diameter increments at breast height (1.3 m above ground level) were monitored in each site intensively (every 15-30 days). The optimum temperature to growth varied among genotypes, ranging from 18 to 22 °C. The minimum annual temperature required for growth was 6 °C, while the maximum was 31 °C. The results at a monthly scale indicate that the minimum temperature to growth is between 7 °C and 23 °C, while the monthly maximum temperature is between 15 °C and 31 °C. When we used annual temperature or large temporal scales, we potentially minimize the effects of climate on plant metabolism; this should be taken into account in process based-models. The study results enhance our understanding of the influence of air temperature on tree growth dynamics. The Eucalyptus genotypes most planted in Brazil and Uruguay have specific thermal demands for growth maintenance and different optimal temperatures for maximum growth. Understanding variation in growth under different climatic conditions would facilitate accurate prediction of forest productivity based on thermal requirements. In addition, the data presented here could facilitate tree breeding by enhancing phenotypic analyses based on ecophysiological factors during the selection process. © 2020 Elsevier B.V.
关键词	Climate models Productivity Tropics Accurate prediction Annual temperatures Climatic conditions Forest productivity Minimum temperatures Phenotypic analysis Temperature thresholds Thermal requirements Forestry air temperature ecophysiology evergreen tree forestry production genotype-environment interaction growth response plantation forestry subtropical region temperature effect Eucalyptus Forestry Genotypes Growth Processes Productivity Temperature Tropics South America Eucalyptus
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132733
推荐引用方式 GB/T 7714	Queiroz T.B.,Campoe O.C.,Montes C.R.,et al. Temperature thresholds for Eucalyptus genotypes growth across tropical and subtropical ranges in South America[J]. Forest Ecology and Management,2020,472.
APA	Queiroz T.B.,Campoe O.C.,Montes C.R.,Alvares C.A.,Cuartas M.Z.,&Guerrini I.A..(2020).Temperature thresholds for Eucalyptus genotypes growth across tropical and subtropical ranges in South America.,472.
MLA	Queiroz T.B.,et al."Temperature thresholds for Eucalyptus genotypes growth across tropical and subtropical ranges in South America".472(2020).