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首页> 外文期刊>Journal of Tropical Forest Science >SPECIES DIVERSITY AND COMMUNITY STRUCTURE IN FOREST FRAGMENTS OF GUANGZHOU, SOUTH CHINA
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SPECIES DIVERSITY AND COMMUNITY STRUCTURE IN FOREST FRAGMENTS OF GUANGZHOU, SOUTH CHINA

机译：中国南方广州林区林木物种多样性和群落结构

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摘要

To study how fragmentation impacts tree species composition and community structure and provide information for efficient conservation of these fragments, we collected data from 138 forest fragments (referred to as fengshui woods by local people) in southern China and compared them with those collected from a well protected large natural reserve, the Dinghu Mountain Biosphere Reserve (Dinghu). Our data indicated that the forest fragments contained lower mean plot species richness compared with Dinghu but total species richness of the plots as a network and species richness variance among plots were higher in the fragments than in Dinghu. Results from regression analyses indicated that fragment age and fragment size were significantly related to community composition or structure. These results indicated that protecting the fragments would conserve greater diversity of regional tree species than a single large reserve. However, if resources are limited, our results suggest that it is possible to increase resource-use efficiency in conserving regional tree species diversity by choosing large adjacent fragments as a network favouring primary species and small fragments favouring secondary species. If such information is available, choosing the least number of fragments, which would include all regional tree species or the maximum number of tree species, would be the best conservation strategy.
机译：为了研究碎片如何影响树木的种类和群落结构并提供有效保护这些碎片的信息，我们从中国南方的138个森林碎片（当地人称为风水林）中收集了数据，并将其与从一口井收集的数据进行了比较。受保护的大型自然保护区-鼎湖山生物圈保护区（鼎湖）。我们的数据表明，与鼎湖相比，森林碎片的平均地块物种丰富度较低，但作为网络的样地总物种丰富度和样地间物种丰富度的变化均高于鼎湖。回归分析的结果表明，片段年龄和片段大小与社区组成或结构显着相关。这些结果表明，与单个大的保护区相比，保护这些碎片将保护更大的区域树种多样性。但是，如果资源有限，我们的结果表明，通过选择较大的相邻片段作为有利于主要树种的网络和较小的片段有利于次要物种的网络，可以在保护区域树种多样性方面提高资源利用效率。如果可获得此类信息，则选择最少的碎片（包括所有区域树种或最大数量的树种）将是最佳的保护策略。

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