The Climate Response of Cedrela Fissilis Annual Ring Width in the Rio São Francisco Basin, Brazil

IF 1.1 4区农林科学 Q3 FORESTRY Tree-Ring Research Pub Date : 2018-07-01 DOI:10.3959/1536-1098-74.2.162

G. Pereira, A. Barbosa, M. Torbenson, D. Stahle, D. Granato-Souza, R. M. Santos, J. P. D. Barbosa

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引用次数: 22

Abstract

Abstract The São Francisco River basin is one of the most drought-prone regions of Brazil. Seasonally dry tropical forests (SDTF) are widely distributed in the basin and we developed a short chronology of Cedrela fissilis annual ring widths from SDTF fragments based on 89 cores from 44 trees dating from 1961 to 2015. The average correlation among all radii (RBAR) is 0.52. The tree-ring chronology is correlated with wet season precipitation totals, must strongly and consistently near the beginning of the wet season. The spatial pattern of correlation covers most of the southern portion of the Brazilian Drought Polygon and the sub-basins of the two largest tributaries of the São Francisco River, in some areas exceeding r = 0.60. The chronology is also correlated with total annual discharge of the Rio São Francisco River measured at Barra (r = 0.489; 1961–2015), which is very promising in a country that generates two thirds of its electricity from hydroelectric power plants, particularly if this short chronology can be extended with trees exceeding 150-years old known to still exist in the region.

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巴西弗朗西斯科盆地年环宽度的气候响应

摘要旧金山河流域是巴西最易发生干旱的地区之一。季节性干旱热带森林（SDTF）广泛分布在盆地中，我们根据1961年至2015年44棵树的89个岩芯，从SDTF碎片中开发了一个裂缝雪松年环宽度的短年表。所有半径之间的平均相关性（RBAR）为0.52。树木年轮年表与雨季降水总量相关，必须在雨季开始时强烈且一致。相关性的空间模式涵盖了巴西干旱多边形南部的大部分地区和São Francisco河两条最大支流的子流域，在某些地区超过r=0.60。该年表还与巴拉河测得的Rio São Francisco河年总流量相关（r=0.489；1961–2015），在一个三分之二的电力来自水力发电厂的国家，这是非常有希望的，特别是如果这个短年表可以用该地区已知仍存在的树龄超过150年的树木来延长的话。

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来源期刊

Tree-Ring Research 农林科学-林学

CiteScore

2.40

自引率

12.50%

发文量

审稿时长

>36 weeks

期刊介绍： Tree-Ring Research (TRR) is devoted to papers dealing with the growth rings of trees and the applications of tree-ring research in a wide variety of fields, including but not limited to archaeology, geology, ecology, hydrology, climatology, forestry, and botany. Papers involving research results, new techniques of data acquisition or analysis, and regional or subject-oriented reviews or syntheses are considered for publication. Scientific papers usually fall into two main categories. Articles should not exceed 5000 words, or approximately 20 double-spaced typewritten pages, including tables, references, and an abstract of 200 words or fewer. All manuscripts submitted as Articles are reviewed by at least two referees. Research Reports, which are usually reviewed by at least one outside referee, should not exceed 1500 words or include more than two figures. Research Reports address technical developments, describe well-documented but preliminary research results, or present findings for which the Article format is not appropriate. Book or monograph Reviews of 500 words or less are also considered. Other categories of papers are occasionally published. All papers are published only in English. Abstracts of the Articles or Reports may be printed in other languages if supplied by the author(s) with English translations.