Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2016.11.010 |
Development of stand structural heterogeneity and growth dominance in thinned Eucalyptus stands in Brazil | |
Soares, Alvaro A. V.1; Leite, Helio G.1; Cruz, Jovane P.1; Forrester, David I.2 | |
2017-01-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 384 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil; Switzerland |
英文摘要 | Higher tree size heterogeneity in forests has been linked to lower productivity, especially in monocultures. Thinning the stand can directly manipulate tree size variability, thereby changing growth partitioning across tree dominance classes and consequently changing the development of stand structural heterogeneity compared to its course in unthinned stands. We used three thinning-intensity experiments to assess how stand heterogeneity and growth dominance develop through time and across different thinning intensities in Eucalyptus stands in one of the most productive regions of Brazil. The experiments were established along a three-site gradient in productivity. The plots were thinned from below at ages 58 and 146 months. The thinning intensities included the removal of 20%, 35% and 50% of basal area and an additional treatment of 35% removal plus pruning concomitantly to thinning. Thinning reduced stand heterogeneity and growth dominance as well as their development through time and this reduction was greater the more intense the thinnings were. Stand structural heterogeneity and growth dominance both increased before and after the first thinning, but the rates of increase after the first thinning were lower than they were before the first thinning. After the second thinning, heterogeneity tended to remain constant, whereas growth dominance tended to decrease, reaching negative values. This was contrary to our expectations of observing the same trends in both variables. Our results show that thinning from below not only reduces heterogeneity and growth dominance by removing the smaller trees, but can also slow the development of stand heterogeneity and growth dominance in Eucalyptus stands and potentially other monocultures. (C) 2016 Elsevier B.V. All rights reserved. |
英文关键词 | Tree size inequality Gini' s coefficient Growth dominance Growth partition Asymmetric competition |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000390727600035 |
WOS关键词 | LIGHT-USE EFFICIENCY ; INDIVIDUAL-TREE ; FERTILIZER APPLICATION ; FOREST STANDS ; NEW-BRUNSWICK ; PRODUCTIVITY ; COMPETITION ; UNIFORMITY ; PATTERNS ; VARIABILITY |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/23148 |
专题 | 气候变化 |
作者单位 | 1.Univ Fed Vicosa, Dept Forestry, Campus Univ, BR-36570000 Vicosa, MG, Brazil; 2.Univ Freiburg, Chair Silviculture, Tennenbacherstr 4, D-79106 Fribourg, Switzerland |
推荐引用方式 GB/T 7714 | Soares, Alvaro A. V.,Leite, Helio G.,Cruz, Jovane P.,et al. Development of stand structural heterogeneity and growth dominance in thinned Eucalyptus stands in Brazil[J]. FOREST ECOLOGY AND MANAGEMENT,2017,384. |
APA | Soares, Alvaro A. V.,Leite, Helio G.,Cruz, Jovane P.,&Forrester, David I..(2017).Development of stand structural heterogeneity and growth dominance in thinned Eucalyptus stands in Brazil.FOREST ECOLOGY AND MANAGEMENT,384. |
MLA | Soares, Alvaro A. V.,et al."Development of stand structural heterogeneity and growth dominance in thinned Eucalyptus stands in Brazil".FOREST ECOLOGY AND MANAGEMENT 384(2017). |
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