Climate and large-sized trees, but not diversity, drive above-ground biomass in subtropical forests

被引：57

作者：

Bordin, Kauane Maiara ^{[1
]}

Esquivel-Muelbert, Adriane ^{[2
,3
]}

Bergamin, Rodrigo Scarton ^{[4
]}

Klipel, Joice ^{[1
]}

Picolotto, Rayana Caroline ^{[1
]}

Frangipani, Marcelo Araujo ^{[5
]}

Zanini, Katia Janaina ^{[1
]}

Cianciaruso, Marcus Vinicius ^{[6
]}

Jarenkow, Joao Andre ^{[7
]}

Jurinitz, Cristiane Follmann ^{[8
]}

Molz, Martin ^{[9
]}

Higuchi, Pedro ^{[10
]}

da Silva, Ana Carolina ^{[10
]}

Mueller, Sandra Cristina ^{[1
]}

机构：

[1] Fed Univ Rio Grande do Sul UFRGS, Plant Ecol Lab LEVEG, Grad Program Ecol, Bento Goncalves Ave 9500, BR-91501970 Porto Alegre, RS, Brazil

[2] Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham, W Midlands, England

[3] Univ Birmingham, Birmingham Inst Forest Res BIFoR, Birmingham, W Midlands, England

[4] Fed Univ Rio Grande do Sul UFRGS, Grad Program Bot, Lab Grassland Vegetat, Bento Goncalves Ave 9500, BR-91501970 Porto Alegre, RS, Brazil

[5] Univ Guelph, Sch Environm Sci, Global Ecol Change & Sustainabil Lab, Guelph, ON, Canada

[6] Univ Fed Goias, Dept Ecol, Goias, Brazil

[7] Fed Univ Rio Grande do Sul UFRGS, Plant Ecol & Plant Geog Lab, Grad Program Bot, Bento Goncalves Ave 9500, BR-91501970 Porto Alegre, RS, Brazil

[8] Pontif Catholic Univ Rio Grande do Sul PUCRS, Inst Environm, Ipiranga Ave 6681, BR-90619900 Porto Alegre, RS, Brazil

[9] Museu Ciencias Nat SEMA RS, Porto Alegre, RS, Brazil

[10] Santa Catarina State Univ, Ave Luiz de Camoes 2090, BR-88520000 Lages, SC, Brazil

来源：

FOREST ECOLOGY AND MANAGEMENT | 2021年 / 490卷

基金：

欧洲研究理事会;

关键词：

Brazilian Atlantic Forest; Carbon stocks; Climate change; Functional diversity; Functional traits; Soil texture; Structural equation model; Temperature annual range; FUNCTIONAL TRAITS; TROPICAL FORESTS; ATLANTIC FOREST; CARBON; BIODIVERSITY; PRODUCTIVITY; PATTERNS; DECLINE; PLANTS; STOCKS;

D O I：

10.1016/j.foreco.2021.119126

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Subtropical forests certainly contribute to terrestrial global carbon storage, but we have limited understanding about the relative amounts and of the drivers of above-ground biomass (AGB) variation in their region. Here we assess the spatial distribution and drivers of AGB in 119 sites across the South American subtropical forests. We applied a structural equation modelling approach to test the causal relationships between AGB and environmental (climate and soil), structural (proportion of large-sized trees) and community (functional and species diversity and composition) variables. The AGB on subtropical forests is on average 246 Mg ha-1. Biomass stocks were driven directly by temperature annual range and the proportion of large-sized trees, whilst soil texture, community mean leaf nitrogen content and functional diversity had no predictive power. Temperature annual range had a negative effect on AGB, indicating that communities under strong thermal amplitude across the year tend to accumulate less AGB. The positive effect of large-sized trees indicates that mature forests are playing a key role in the long-term persistence of carbon storage, as these large trees account for 64% of total biomass stored in these forests. Our study reinforces the importance of structurally complex subtropical forest remnants for maximising carbon storage, especially facing future climatic changes predicted for the region.

引用

页数：12

共 88 条

[1] Amazonian rainforest tree mortality driven by climate and functional traits [J].