GSTDTAP  > 气候变化
DOI10.1016/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
ISSN0378-1127
EISSN1872-7042
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
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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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