Structural development and productivity of replanted mangrove plantations in Kenya
Structural development and productivity of replanted mangrove plantations in Kenya
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DOI：
10.1016/j.foreco.2008.01.031
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发表时间：
2008-04-20
影响因子：
3.7
通讯作者：
Karachi, Moses
中科院分区：
文献类型：
--
作者：
Kairo, James G.;Lang'at, Joseph K. S.;Karachi, Moses
对 12 年生红树 (Rhizophora mucronata Lam) 的森林结构和生产力进行了研究。肯尼亚加齐湾的种植园。采样是在 22 个 10 m x 10 m 样方中进行的，这些样方沿着垂直于水线的带状横断面放置。在每个样方内，所有茎直径大于 2.5 厘米的树木均被识别、标记位置并计数。植被测量包括树高 (m)、树冠覆盖度 (%) 和距地面 1.3 m 处测量的茎直径 (D-130)；由此得出断面积（m(2)/ha）；林分密度（茎/公顷）和生物量（吨/公顷）。使用线性再生采样（LRS）获得有关幼体组成和分布的信息。补植林林分密度为5132株/公顷；平均冠层高度和茎直径分别为 8.4 +/- 1.1 m（范围：3.0-11.0 m）和 6.2 +/- 11.87 cm（范围：2.5-12.4 cm）。幼树总密度为每公顷4886株；其中78.6%构成亲本冠层。 12 年生 R. mucronata 人工林的常备生物量为 106.7 +/- 24.0 吨/公顷，生物量积累率为 8.9 吨/（公顷年）。 (c) 2008 Elsevier B.V. 保留所有权利。
Forest structure and productivity was investigated in a 12-year-old Rhizophora mucronata Lam. plantation at Gazi Bay, Kenya. Sampling was carried out in 22, 10 m x 10 m quadrats laid along belt transects perpendicular to the waterline. Within each quadrat all trees with stem diameter greater than 2.5 cm were identified, position marked and counted. Vegetation measurements included tree height (m), canopy cover (%) and stem diameter measured at 1.3 m above the ground (D-130); from which were derived basal area (m(2)/ha); stand density (stems/ha) and biomass (t/ha). Information regarding composition and distribution of juveniles was derived using linear regeneration sampling (LRS). The replanted forest had a stand density of 5132 stems/ha; with a mean canopy height and stem diameter of 8.4 +/- 1.1 m (range: 3.0-11.0 m) and 6.2 +/- 11.87 cm (range: 2.5-12.4 cm), respectively. The total juvenile density was 4886 saplings per hectare; 78.6% of which constituted the parental canopy. The standing biomass for the 12-year-old R. mucronata plantation was 106.7 +/- 24.0 t/ha, giving a biomass accumulation rate of 8.9 t/(ha year). (c) 2008 Elsevier B.V. All rights reserved.