Age determination of Acacia tortilis (Forsk.) Hayne from northern Kenya
Age determination of Acacia tortilis (Forsk.) Hayne from northern Kenya
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肯尼亚北部 Acacia tortilis (Forsk.) Hayne 的年龄测定
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
Jonathan Moss
中科院分区：
文献类型：
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作者：
David Martín;Jonathan Moss
基于年轮数的年龄确定在干林生态系统动力学研究中具有很大的潜力。采集了肯尼亚北部Marsabit地区的金合欢（Acacia tortilis）茎盘，进行了树木年代学分析。总结了年轮鉴定中存在的问题。回归分析用于发展年龄-环数和环数大小的关系。还估计了幼苗在浏览抑制状态下花费的时间。结论是，没有足够的证据证明统计上有效的年龄大小关系的发展。确定了当前技术尚未克服的问题。未来的研究建议使用形成层损伤技术，特别强调浏览对形成层活性的潜在影响。
Age determination on the basis of ring count holds great potential for the study of dry woodland ecosystem dynamics. Discs from stems of Acacia tortilis from Marsabit District, northern Kenya, were collected for dendrochronological analysis. Problems in the identification of growth rings are summarized. Regression analysis is used to develop age–ring count and ring count–size relationships. The time seedlings spend in a browse-suppressed state is also estimated. It is concluded that there is insufficient evidence for the development of statistically valid age–size relationships. Problems that current techniques have yet to overcome are identified. Future studies are recommended using cambial injury techniques, particular emphasis being placed on the potential effects of browsing on cambial activity.