GSTDTAP  > 气候变化
DOI10.1016/j.foreco.2019.01.018
Management implications of tree growth patterns in miombo woodlands of Zambia
Chidumayo, E. N.
2019-03-15
发表期刊FOREST ECOLOGY AND MANAGEMENT
ISSN0378-1127
EISSN1872-7042
出版年2019
卷号436页码:105-116
文章类型Article
语种英语
国家Zambia
英文摘要

Brachystegia-Julbernardia (miombo) woodlands of east and southern Africa are divided into dry (< 1000 mm annual rainfall) and wet (> 1000 mm). These woodlands first became established about 14,500 years ago. Since the migration of the Bantu people 5000 years ago, miombo woodlands have experienced widespread degradation and deforestation. There is little long-term data on tree growth and forest productivity for miombo woodlands and yet such data are required for the proper management of these woodlands. This study used tree growth data from 35 temporary plots in regrowth of 5-49 years old, and six permanent sample plots (PSPs) in old growth forest, which were monitored over a 28-year period (1990-2018). These data were used to investigate tree diameter growth and develop models of forest dynamics in wet and dry miombo woodlands. The study found that variations in tree diameter and stand basal area increments are strongly driven by stand age, tree size and density and that growth rates are higher in wet than dry miombo. Overall miombo woodland trees grew slowly at a rate of 0.34-0.50 cm yr(-1) in re-growth areas. Most of the species in uneven-aged old-growth stands in dry miombo grew by 0.15 cm yr(-1) with no significant annual differences although variations among conspecifics were large. Models predicted tree diameter increments of 0.10-0.24 cm yr(-1) for stands of 100 years old. Transitions from one 5-cm diameter class to the next was estimated to take over 20 years and significant shifts in stand tree diameter distribution curves require over 25 years because of the low annual diameter increments. Stand responses to degradation varied from site to site and were driven by the number of saplings transiting into small diameter size classes. On the temporary regrowth plots basal areas averaged 7.1 m(2) ha(-1) and 9.9 m(2) ha(-1) in dry and wet re-growth miombo, respectively, with positive increments estimated at 0.40 m(2) ha(-1) yr(-1) in dry miombo and 0.53 m(2) ha(-1) yr(-1) in wet miombo. By contrast, average basal area increment on old-growth PSPs was negative, at -0.26 m(2) ha(-1) yr(-1) over the 1990-2018 period, due to cutting and fire damage. Such drivers of forest degradation need to be controlled, especially in old-growth miombo, to maintain forest health and prevent decline in biomass.


英文关键词Basal area Diameter increment Dry and wet miombo Growth models Permanent sample plots Re-growth
领域气候变化
收录类别SCI-E
WOS记录号WOS:000460075000011
WOS关键词BRACHYSTEGIA-JULBERNARDIA WOODLAND ; PTEROCARPUS-ANGOLENSIS ; FOREST ; REGENERATION ; PRODUCTIVITY ; SEASONALITY ; VEGETATION ; DYNAMICS ; BIOMASS ; AFRICA
WOS类目Forestry
WOS研究方向Forestry
引用统计
被引频次:28[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/24293
专题气候变化
作者单位Makeni Savanna Res Project, POB 50323, Lusaka, Zambia
推荐引用方式
GB/T 7714
Chidumayo, E. N.. Management implications of tree growth patterns in miombo woodlands of Zambia[J]. FOREST ECOLOGY AND MANAGEMENT,2019,436:105-116.
APA Chidumayo, E. N..(2019).Management implications of tree growth patterns in miombo woodlands of Zambia.FOREST ECOLOGY AND MANAGEMENT,436,105-116.
MLA Chidumayo, E. N.."Management implications of tree growth patterns in miombo woodlands of Zambia".FOREST ECOLOGY AND MANAGEMENT 436(2019):105-116.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Chidumayo, E. N.]的文章
百度学术
百度学术中相似的文章
[Chidumayo, E. N.]的文章
必应学术
必应学术中相似的文章
[Chidumayo, E. N.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。