干扰对马来西亚吉兰丹桐巴三角洲红树林物种多样性的影响

Z. Syahirah, J. Noor, A. M. Syafinie
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引用次数: 3

摘要

本研究的目的是确定马来西亚吉兰丹省东巴三角洲受干扰和未受干扰地区红树林树种的多样性和森林含量,如种数、树高、胸径高(DBH)和树密度。未受干扰的红树林区域的选址是远离当地住区和没有任何开发的区域,位于Layang-layang岛、Bedal岛、Nelayan岛和Tanjung Duff岛。而图居岛和坎冰岛则因其位置靠近居民点而被选为受干扰的红树林区。在两个区域随机建立10个矩形地块,每个地块的大小设置为20 x 10m。采样面积为0.2公顷(ha)。结果表明,在受干扰和未受干扰的红树区内,共鉴定出5种红树,分别为海蔷薇(Avicennia marina)、裸树(Bruguiera gymnorrhiza)、尖根(Rhizophora apiculata)、粗根(Rhizophora mucronata)和海桑(Sonneratia caseolaris)。未受干扰地区的平均胸径为3 ~ 12cm,而受干扰地区的平均胸径为4 ~ 8cm。未受干扰地区红树林物种平均高度范围为3 ~ 10m,受干扰地区为1 ~ 6m。经Shannon-Weiner指数(H’)计算,图姆帕特三角洲未受干扰地区的红树林多样性分别为1.54和0.38,高于受干扰地区。物种丰富度群落随着Shannon-Weiner指数的增加而增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of disturbance on mangrove species diversity in Delta Tumpat, Kelantan, Malaysia
The aim of this study is to determine the diversity of mangrove trees species and forest content such as number of species, trees height, diameter breast height (DBH) and trees density of mangrove species in disturbed and undisturbed area at delta Tumpat, Kelantan, Malaysia. The site selection of undisturbed mangrove areas were the area that far from local settlements and free from any development which is located at Layang-layang Island, Bedal Island, Nelayan Island and Tanjung Duff Island. Whereas, Tujuh Island and Kambing Island were selected as disturbed mangrove area as their location was near to the settlements. A total of ten rectangular plots were established randomly at both area and each plot size is set at 20 x 10m. The sampling area was 0.2 hectare (ha). From the findings, there were five mangrove species identified at both disturbed and undisturbed mangrove area which are Avicennia marina, Bruguiera gymnorrhiza, Rhizophora apiculata, Rhizophora mucronata and Sonneratia caseolaris. The average DBH at undisturbed mangrove area ranges from 3 to12cm, compared to 4 to 8cm in disturbed mangrove area. The range of average height of mangrove species in undisturbed area is 3 to 10m and 1 to 6m for disturbed area. In delta Tumpat, the diversity of mangrove in undisturbed area is higher than in disturbed area calculated using Shannon-Weiner index (H’) with 1.54 and 0.38. Species richness community increase as the Shannon-Weiner index increase.
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