Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.05.033 |
Leaf area index and root biomass variation at different secondary forest ages in the eastern Amazon | |
Cattanio, Jose Henrique | |
2017-09-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 400页码:43476 |
文章类型 | Review |
语种 | 英语 |
国家 | Brazil |
英文摘要 | In the Amazon region, small farmers use secondary forests as the only source of nutrients for agriculture, performing slash and burn in a rotation system. Secondary forests cover a large area of these landscapes and are crucial to maintaining soil fertility. The main objectives of this study were to gain insight into the seasonal variations in leaf area index (LAI) and root biomass growth, and to improve the accuracy of carbon sequestration estimates in early successional tropical secondary forests following shifting cultivation. Secondary vegetation of three different ages (1 year, 6 years and 10 years after shifting cultivation) were monitored monthly with a LI-COR Plant Canopy Analyzer, and root growth was seasonally measured down to a depth of 400 cm using ingrowth bags. The youngest secondary forests showed strong LAI seasonality, and the seasonality in LAI decreased in the oldest forest. The roots grew throughout the year even though the growth rates were higher during the dry season, which supported a dense biomass of leaves over the year. This study clearly indicates that information on deep rooting and seasonality of leaf area in secondary tropical forests is essential for understanding ecosystem ecophysiology, as well as community ecology and biogeochemical cycles. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Leaf area index Leaf biomass Root ingrowth technique Fine-root production Seasonality |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406732100001 |
WOS关键词 | NORTHEASTERN COSTA-RICA ; SLASH-AND-BURN ; RAIN-FOREST ; BRAZILIAN AMAZON ; DEEP ROOTS ; ABOVEGROUND BIOMASS ; SHIFTING CULTIVATION ; PRIMARY PRODUCTIVITY ; LAND PREPARATION ; CARBON STORAGE |
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/22194 |
专题 | 气候变化 |
作者单位 | Fed Univ Para, Geosci Inst, Campus Univ Guama,Rua Augusto Correa 1, BR-66075110 Belem, PA, Brazil |
推荐引用方式 GB/T 7714 | Cattanio, Jose Henrique. Leaf area index and root biomass variation at different secondary forest ages in the eastern Amazon[J]. FOREST ECOLOGY AND MANAGEMENT,2017,400:43476. |
APA | Cattanio, Jose Henrique.(2017).Leaf area index and root biomass variation at different secondary forest ages in the eastern Amazon.FOREST ECOLOGY AND MANAGEMENT,400,43476. |
MLA | Cattanio, Jose Henrique."Leaf area index and root biomass variation at different secondary forest ages in the eastern Amazon".FOREST ECOLOGY AND MANAGEMENT 400(2017):43476. |
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