The Structural Characteristics Of The Species Diversity Of Protected Areas In Guangdong Province And Their Relationship

Nature resource and ecological environment are the basic conditions for human beings to survive and develop. It is very important for us to conserve the nature resource, ecological environment and biodiversity because of their significance for man's survival and development. More than 10% plant and animal species of the world can be found in China, with very rich and diverse ecological system. In order to conserve these resources and their habitats, the very effective method is to improve the construction and management level in the nature reserve. Until the end of 2001, 1550 various nature reserves has been set up in China, almost taking up 14.4% of the whole national area. The establishment of the nature reserve sheltered and protected 70% land ecological system types, 80% wild animal and 60% vascular plant species, especially for the rare and endangered wild animal and plant species that are specially protected by government. For evaluating the overall and economic value of nature reserve, the assessment for the plant and animal species and their biodiversity (the richness of species) usually takes a great deal of time and few methods can be applied too. No any method is publicly accepted, scientific, integrated and systemic up to now.The characters of biodiversity structures of 21 Nature Reserves of Guangdong province were comprehensively studied based on the macro-ecology method, and the quantitative relationships among species-genus-family, the frequency distribution of the species in genera and families, and the quantitative relationship among the species in different groups were also systematically analyzed here. The results are as below:The quantitative relationships of the species among different groups: Much discrepancy exists in the quantitative relationships of the species in different groups and does not demonstrate the regularity, implying that the available data may be insufficient.The quantitative relationships among species-genus-family: whether plants or animals, their species-genus and species-family correlation is very significant (P<0.01) quantitatively. And the correlation coefficient of species-genus is higher than that of species-family. This regularity can be used for prediction.The frequency distribution of the species number in genera: the analysis of the frequency distribution of the birds and beasts in the 21 nature reserves of Guangdong indicated that the frequency distribution of the species in genera and families has a very strong regularity, which can be coordinated on basis of the power model (P<0.01).Overall, it can be concluded that the species constitute in the nature reserves has some certain regularity and some of them can be used for prediction in systematically and scientifically guiding the overall and economical value assessment for the nature reserve and are worthy of further study. Due to the insufficient data collected, a field investigation is deeply necessary in future.