DOI: 10.1016/j.foreco.2017.09.004
Scopus记录号: 2-s2.0-85029355617
论文题名: Biotic and abiotic drivers of the tree growth and mortality trade-off in an old-growth temperate forest
作者: Zhu Y. ; Hogan J.A. ; Cai H. ; Xun Y. ; Jiang F. ; Jin G.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 404 起始页码: 354
结束页码: 360
语种: 英语
英文关键词: Abiotic and biotic factors
; Demography
; Size classes
; Temperate forest
; Trade-offs
; Tree growth and mortality
Scopus关键词: Economic and social effects
; Population dynamics
; Population statistics
; Biotic factors
; Demography
; Size class
; Temperate forests
; Trade off
; Tree growth
; Forestry
英文摘要: The tree growth and mortality trade-off is well documented and plays a key role in forests by forming the basis of many ecosystem processes and contributing to tree species coexistence. One area that requires further understanding is how the growth-mortality trade-off is influenced by biotic and abiotic interactions in the forest. In this study, we used a 5-year interval of tree growth and mortality demographic data from a 9-ha forest dynamics plot in a temperate old-growth Chinese forest to address two questions, (1) What is the nature of the growth-mortality trade-off among species in this forest? (2) Are there differences between the responses of tree growth and mortality to local neighborhood variables, both biotic and abiotic? Specifically, do these responses vary among species and with tree size? For the first question, we hypothesized that, within species, mortality rate would be negatively correlated with growth rate, whereas among species it would be positively correlated. For the second question, we expected biotic and abiotic factors to both be important for tree mortality; but expected biotic factors to be more important than abiotic factors for tree growth. The responses of tree growth and mortality to local neighborhood variables, both biotic and abiotic, varied among species. Abiotic factors were more important than biotic factors for small trees; biotic variables were stable with tree size for both small and large trees. Our results showed that there were differences between the responses of tree growth and mortality to local neighborhood variables (i.e., biotic and abiotic) in this temperate forest community. The responses of tree mortality to local neighborhood variables strongly varied across species. Abiotic factors were only important for the growth of small trees. Biotic factors were stable with tree size for growth of small and large trees, but not for mortality. Mortality was negatively correlated with growth for large trees within species; growth-mortality trade-off among species was found to be more accentuated for small trees. The responses of tree mortality to local neighborhood variables differed strongly across species, whereas the responses of tree growth to local neighborhood variables varied among size classes. Tree growth and mortality is tightly correlated both within (negatively) and among species (positively), and their relationships are both size dependent in this temperate forest. Our findings highlight that differential responses of tree growth and mortality to local neighborhood variables continue to shape the forest community well after sapling establishment in this temperate forest community. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64107
Appears in Collections: 影响、适应和脆弱性
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作者单位: Center for Ecological Research, Northeast Forestry University, Harbin, China; International Center for Tropical Botany, Department of Biological Sciences, Florida International University, Miami, FL, United States
Recommended Citation:
Zhu Y.,Hogan J.A.,Cai H.,et al. Biotic and abiotic drivers of the tree growth and mortality trade-off in an old-growth temperate forest[J]. Forest Ecology and Management,2017-01-01,404