Sampling Methods of Vegetation Investigation in a Tropical Rain Forest at Bawangling Nature Reserve,Hainan
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CONTRIBUTORS:
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JOURNAL:
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YEAR:
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2004
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PUB TYPE:
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Journal Article
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SUBJECT(S):
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Vegetation sampling techniques, tropical rain forests, Geographic information system (GIS), neighbourhood analysis
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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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103-394-496
(Last edited on
2004/12/11 03:55:41 US/Mountain)
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SPONSOR(S):
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ABSTRACT:
Sampling techniques of vegetation study on tropical forest were examined with the help of table manipulation function and neighbourhood analysis function of GIS (geographic information system). An example was presented based on the survey data from a tropical ravine rain forest community at Bawangling National Nature Reserve on Hainan Island. The results indicated that the often-sued species-area curve could not determine minimum area for the ravine forest, i.e. mimum area was much larger than 5 000 m2, while according to the importance value-area curve, minimal area for ravine forest was 4000 m2. Closet individual method was adopted to study plotless sampling. Results showed that the minimal point number for speice-point number curve was 119, and that for importance value-point number curve was 280. Species-individual curve indicates that the individual number needed for investigation should be multiplied fourfold, if we want to obtain doubling species number.
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STATISTICS
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