Characteristics of Recovery Population of Disanthus cercidifolius var.longipes at Burned Area in Dadongshan of Nanling Mountains

Abstract

Abstract: The vegetation quardat method is used to compare the ecological characteristics of recovery community and Disanthus cercidifolius var.longipes population at burned area to those at the non-fired area growing nearby at the same altitude in Dadongshan,Nanling Mountains.The results showed that the Disanthus cercidifolius var.longipes population recovered rapidly at the burned area,but the Quercus acutissima and Q.serrata have more important values,while the dominant species are Disanthus cercidifolius var.longipes,Pinus massoniana,and P.taiwanensis in non-fired area community.The similarity of Jaccard is 0.194,and Cody index is 29.00 showing the relplace rate of species is relatively high.The vegetation coverage,richness,the species diversity index of Simpson and Shannon-Wiener,and evenness of J_D and J_H at burned area are all lower than that of non-fired area vegetation,indicating that during the three years of early stage after fire,the community structure is flexible than that of non-fired community.Based on the diameter size structures,both the populations of Disanthus cercidifolius var.longipes at burned area and non-burned area have the same increasing trend,but the burned area has a lower population size.The height structure for population at burned area is much different from that at the non-fired area population.The results suggest that the population of Disanthus cercidifolius var.longipes at burned area naturally recoved rapidly,and some measures should be taken to ensure the survival and enlargement of Disanthus cercidifolius var.longipes population.

Key words: Disanthus cercidifolius var.longipes, burned area, natural recovery population, size structure, height structure, Dadongshan of Nanling Mountains

CLC Number:

S718.5

MIAO Shenyu, CHEN Zhiming, LI Xiaojie, LIU Jiajun, WANG Houlin, HUANG Jinling, WU Guoyi, LI Weijian, HUANG Chenghui. Characteristics of Recovery Population of Disanthus cercidifolius var.longipes at Burned Area in Dadongshan of Nanling Mountains[J]. FOREST RESOURCES WANAGEMENT, 2013, (3): 88-93.

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