蓝花楹(Jacaranda copaia)的水力特性d .堂。产于亚马逊西南部

IF 0.6 4区农林科学 Q4 FORESTRY

Revista Arvore Pub Date : 2023-01-01 DOI:10.1590/1806-908820230000015

Renata Teixeira de Oliveira, João Antônio Rodrigues Santos, Martin Acosta Oliveira, Julia Valentim Tavares, Patrícia Nakayama Miranda, Marcos Silveira

{"title":"蓝花楹(Jacaranda copaia)的水力特性d .堂。产于亚马逊西南部","authors":"Renata Teixeira de Oliveira, João Antônio Rodrigues Santos, Martin Acosta Oliveira, Julia Valentim Tavares, Patrícia Nakayama Miranda, Marcos Silveira","doi":"10.1590/1806-908820230000015","DOIUrl":null,"url":null,"abstract":"ABSTRACT Trees transport water from underground to the atmosphere through the evapotranspiration process. Climate change can significantly compromise this process due to changes in land use, such as deforestation. This study aimed to characterize the hydraulic and anatomical attributes of Jacaranda copaia (Aubl.) D. Don (Bignoniaceae), in the Southwestern Brazilian Amazon. For this purpose, the xylem vulnerability curve of this species was described. The frequency and diameter of the xylem vessels and the stomata density were also measured. Finally, a hydraulic attribute of Jacaranda copaia was compared to other species at global, tropical, and Amazonian levels. The findings show that, in the region studied, the species Jacaranda copaia has diffuse-porous woods and numerous vessels (average vessel ranging from 8 to 14 nº/mm2) with small (<50µm) to medium (between 100 and 200 µm) diameters. The average stomatal density ranged from 289 to 309 stomata/mm2. The xylem hydraulic resistance to embolism (Ψ50) ranged from -0.814 to -2.400 MPa, with relatively narrow hydraulic safety margins (HSM50 ranging from -0.312 to 1.122; HSM88 ranging from 0.204 to 1.709). The average values of Ψ50 detected were similar to a large percentage of arboreal species at global, tropical, and Amazonian levels. Possibly, the studied species presents a more “risky” hydraulic strategy, with relatively narrow hydraulic safety margins, due to its dynamic character of fast growth, typical of pioneer species.","PeriodicalId":21214,"journal":{"name":"Revista Arvore","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"HYDRAULIC TRAITS OF Jacaranda copaia (Aubl.) D. Don. (Bignoniaceae) IN THE SOUTHWEST AMAZON\",\"authors\":\"Renata Teixeira de Oliveira, João Antônio Rodrigues Santos, Martin Acosta Oliveira, Julia Valentim Tavares, Patrícia Nakayama Miranda, Marcos Silveira\",\"doi\":\"10.1590/1806-908820230000015\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACT Trees transport water from underground to the atmosphere through the evapotranspiration process. Climate change can significantly compromise this process due to changes in land use, such as deforestation. This study aimed to characterize the hydraulic and anatomical attributes of Jacaranda copaia (Aubl.) D. Don (Bignoniaceae), in the Southwestern Brazilian Amazon. For this purpose, the xylem vulnerability curve of this species was described. The frequency and diameter of the xylem vessels and the stomata density were also measured. Finally, a hydraulic attribute of Jacaranda copaia was compared to other species at global, tropical, and Amazonian levels. The findings show that, in the region studied, the species Jacaranda copaia has diffuse-porous woods and numerous vessels (average vessel ranging from 8 to 14 nº/mm2) with small (<50µm) to medium (between 100 and 200 µm) diameters. The average stomatal density ranged from 289 to 309 stomata/mm2. The xylem hydraulic resistance to embolism (Ψ50) ranged from -0.814 to -2.400 MPa, with relatively narrow hydraulic safety margins (HSM50 ranging from -0.312 to 1.122; HSM88 ranging from 0.204 to 1.709). The average values of Ψ50 detected were similar to a large percentage of arboreal species at global, tropical, and Amazonian levels. Possibly, the studied species presents a more “risky” hydraulic strategy, with relatively narrow hydraulic safety margins, due to its dynamic character of fast growth, typical of pioneer species.\",\"PeriodicalId\":21214,\"journal\":{\"name\":\"Revista Arvore\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Revista Arvore\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1590/1806-908820230000015\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"FORESTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Revista Arvore","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1590/1806-908820230000015","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"FORESTRY","Score":null,"Total":0}

引用次数: 0

摘要

树木通过蒸散作用将水分从地下输送到大气中。由于森林砍伐等土地利用的变化，气候变化可能严重损害这一进程。摘要本研究旨在研究紫花楹(Jacaranda copaia, Aubl.)的水力学和解剖学特征。D. Don (Bignoniaceae)，生长于巴西亚马逊西南部。为此，对该树种木质部的易损性曲线进行了描述。测定了木质部导管的频率、直径和气孔密度。最后，在全球、热带和亚马逊水平上比较了蓝花楹的水力特性。研究结果表明，在研究区域，蓝花楹(Jacaranda copaia)具有弥散多孔的木材和许多直径小(50µm)到中等(100 ~ 200µm)的血管(平均血管直径为8 ~ 14 nº/mm2)。平均气孔密度为289 ~ 309气孔/mm2。木质部抗栓塞水力阻力(Ψ50)范围为-0.814 ~ -2.400 MPa，水力安全边际相对较窄(HSM50范围为-0.312 ~ 1.122;HSM88范围从0.204到1.709)。所检测到的Ψ50的平均值与全球、热带和亚马逊水平上大部分乔木物种的平均值相似。可能由于其快速生长的动态特征，具有典型的先锋物种，所研究的物种表现出更“冒险”的水力策略，其水力安全边际相对较窄。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

HYDRAULIC TRAITS OF Jacaranda copaia (Aubl.) D. Don. (Bignoniaceae) IN THE SOUTHWEST AMAZON

ABSTRACT Trees transport water from underground to the atmosphere through the evapotranspiration process. Climate change can significantly compromise this process due to changes in land use, such as deforestation. This study aimed to characterize the hydraulic and anatomical attributes of Jacaranda copaia (Aubl.) D. Don (Bignoniaceae), in the Southwestern Brazilian Amazon. For this purpose, the xylem vulnerability curve of this species was described. The frequency and diameter of the xylem vessels and the stomata density were also measured. Finally, a hydraulic attribute of Jacaranda copaia was compared to other species at global, tropical, and Amazonian levels. The findings show that, in the region studied, the species Jacaranda copaia has diffuse-porous woods and numerous vessels (average vessel ranging from 8 to 14 nº/mm2) with small (<50µm) to medium (between 100 and 200 µm) diameters. The average stomatal density ranged from 289 to 309 stomata/mm2. The xylem hydraulic resistance to embolism (Ψ50) ranged from -0.814 to -2.400 MPa, with relatively narrow hydraulic safety margins (HSM50 ranging from -0.312 to 1.122; HSM88 ranging from 0.204 to 1.709). The average values of Ψ50 detected were similar to a large percentage of arboreal species at global, tropical, and Amazonian levels. Possibly, the studied species presents a more “risky” hydraulic strategy, with relatively narrow hydraulic safety margins, due to its dynamic character of fast growth, typical of pioneer species.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Revista Arvore FORESTRY-

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： A Revista Árvore é um veículo de comunicação científica da Sociedade de Investigações Florestais – SIF. O jornal é de acesso gratuito, revisado por pares, que publica bimestralmente trabalhos científicos originais no campo da Ciência Florestal. As áreas temáticas para publicação são: Ambiência e Conservação da Natureza, Manejo Florestal, Silvicultura e Tecnologia da Madeira e Utilização de Produtos Florestais. A política editorial visa manter alta conduta ética em relação à publicação e aos seus funcionários, rigor na qualidade dos artigos científicos, seleção de revisores qualificados, respeito profissional aos autores e processo de tomada de decisão imparcial. A Revista Árvore publica artigos apenas em inglês. Artigos de revisão podem ser publicados se houver uma discussão relevante resumindo o estado da arte sobre o assunto. A revisão estrita da literatura não é aceita.