Neighbourhood Effects in a Ravine Rain Forests at Bawangling, Hainan
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CONTRIBUTORS:
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INSTITUTION ID:
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SERIES TITLE:
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YEAR:
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2
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PUB TYPE:
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Working Paper/Manuscript
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WORKING PAPER NUMBER:
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None
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PAGES:
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SUBJECT(S):
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Neighbourhood effects, tropical rain forest, Bawangling, Competitive coexistence
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DISCIPLINE:
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Ecology
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HTTP:
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LANGUAGE:
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Chinese
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PUB ID:
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103-394-498
(Last edited on
2005/06/15 11:48:05 GMT-6)
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SPONSOR(S):
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ABSTRACT:
The biotic interaction will have the influence over the pattern. On the other hand, spatial arrangement will inversely affect intra-/inter-specific relationship and neighbourhood growth. For example, small-scale conspecific aggregation (i.e. heterospecific segregation) will decrease the interspecific competition, thus maintain high species diversity. Such neighbourhood interaction often related to the distance, we called it “neighborhood effect”. The effect could be either positive or negative. In the ravine forest, the summed DBH of each individual and its neighbour is positively correlated with the plant-neighbour distance. Neighborhood effects were obvious when mean plant-neighbour distance is smaller than 5.670m. Some clumped species have no significant neighbourhood effects may result from conspecific beneficiation; clumped distribution could also reduce negative interspecific neighbourhood effects. Species with regular pattern should have a low neighbourhood effect since individuals are spatially excluded. Negative neighborhood effects of the whole community are significant. DBH of the base plant is negatively correlated with plant-neighbour distance, and positively correlated with DBH of neighbours. That is to say, size of base plant will increase with the increase of plant-neighbour distance and neighbours’ size. DBH of the base plant is also positively correlated with its proximity area.
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STATISTICS
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