学术英语海报

ucture of tree layer
Important Species values Oplismenus 69.271 compositus 34.628 20.704 Ilex triflora Cryptocarya concinna
Table 3 The species diversity of different community-levels Layer Tree layer Shrub layer Herb layer Community Margalef Simpson index index 2.1851 3.4753 3.3599 5.5594 0.8760 0.9108 0.8650 0.9365 ShannonWiener index 3.3243 3.9267 3.5882 4.6423 Probability of interspecific encounter 0.8960 0.9280 0.8726 0.9409 Pielou index 0.8984 0.8940 0.7826 0.8503 species abundance 13 21 24 44
Methods
Analysis of data： Importance value, Diversity index, Population age structure Experimental method： This study investigated by quadrat to classify and measure on growth parameter of plants. Tree layer, shrub layer and herb layer all have six quadrat, respectively 100 ㎡ (10m × 10m),4 ㎡ (2m×2m), 1㎡（1m×1m).
This study investigated the community characteristics of Fengshui forest in Jiaoling County, Meizhou City, Guangdong Province. Fengshui forest to some extent belongs to secondary forest.This is to be retained by the forest in the Chinese people's worship of Fengshui culture,when the village was built. Therefore, the investigation of Fengshui forest community can provide a good reference for the afforestation .
Introduction
Vascularplant Pteridophyte Dicotyledoneae nocotyledoneae Total Family 1 17 4 22
Results
Table 1 Statistic of vascular plant composition Genus 1 27 6 34 Species 1 36 7 44 Xylophyta 33 2 35 Herbage 1 2 5 8
A Community Investigation on the Fengshui Forest in JiaoLing County, MeiZhou City, GuangDong Province
He Wenyao Supervisor：Yang Qihe
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Importan Species Species t values Castanopsis Canthium 65.346 hystrix dicoccum Castanopsis Castanopsis 42.967 sclerophylla fabri Castanopsis Psychotria 33.669 rufotomentosa rubra
Conclusion
As can be seen from the table 1, the plant species for survey is richness, which has 22 family ,34 genus and 44 Species, in which the dominant species of the dicotyledoneae, next of the nocotyledoneae, and the pteridophyte at last. As can be seen from table 2, the important value of tree layer top 3 plants are Fagaceae which have dominant in the tree layer.Canthium dicoccum is the dominant species in shrub layer and Fagaceae also has a large advant age.Canthium dicoccum is the dominant species in shrub layer and Fagaceae also has a large advantage.In general, the Castanopsis hystrix is constructive species, Castanopsis sclerophylla and Castanopsis rufotomentosa is sub dominant species and communities can be named: Castanopsis hystrix + Castanopsis sclerophylla - Canthium dicoccum + Castanopsis fabri - Oplismenus compositus + Adiantum flabellulatum . From table 3, the species abundance of the community was 44, which indicated that the species in the community were more.The PIE, Shannon-Wiener index, Simpson index and Margalef index showed that the species diversity was high.In the diversity index,the shrub layer was more high level. Figure 1, Castanopsis sclerophylla is a declined age s t r u c t u re a n d C a s t a n o p s i s f a b r i , S c h i m a s u p e r b a , Castanopsis hystrix is a growth age structure.On the whole, the age structure of the community is a stable growth model. In the future community structure will not be a big change. According to the characteristics of plants and survey data, in the afforestation proposals to Castanopsis hystrix was the dominant species, Castanopsis sclerophylla was the subdominant species, Alangium chinense for accompanying speciess.This model could slowed the conflict between man and nature.
Table 2 Importance values of the plant Tree layer shrub layer herb layer Important values 63.605 33.632 23.220
Objectives
Survey data can be used to analyze the community characteristics, such as structural type, organization level, development stage, stability degree and habitat differences. These communities characteristics provide scientific reference in the process of selecting plant species and determining the proportion of each plant.