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Table of Content
    Volume 9 Issue 1
    10 January 1985
      
    Research Articles
    Cluster Analysis of Evergreen Broad-leaved Forest in Guangxi
    Song Yongchang, Zhou Yuli, Wang Xianpu
    Chin J Plan Ecolo. 1985, 9 (1):  1-20. 
    Abstract ( 1639 )   PDF (1008KB) ( 643 )   Save
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    The cluster analysis method is used in this paper to classify 30 releves (292 species) of evergreen broad-leaved forest which collected from different places in Guangxi. The distance formula Euclidean is adopted for calculation of similarity between releves. Eight’ cluster methods: nearest neighbour, furthest neighbour, median, centroid, group average, flexible group average, incremental sum of squares and flexible cluster method, are used in cluster analysis.The results of using cluster analysis are similar to, and as well as different with the classification by dominance-type. However, the cluster analysis may differentiate the releves in more detail. In some cases it can not only incorporate the releves, which come from different places and have same dominants, into same type, but also divide them into distinct groups. Sometimes it can also put the coming from same place and having different dominants releves together. All of them reflect the floristic composition which relate to latitude and altitude and other habitat factor to be changed. Based on the results of cluster analysis, 25 releves are divided into seven types and the diagnostic species are sought out of the five types of them. In addition, eight cluster analysis methods and threshold value of classifying levels are discussed.
    Studies on the Mangrove Ecosystem of the Jiulong Jiang River Estuary in China. IV. The Accumulation and Biological Cycle of Nitrogen and Phosphorus Elements in the Kandelia candi Community
    Lin Peng, Lin Guanghui
    Chin J Plan Ecolo. 1985, 9 (1):  21-31. 
    Abstract ( 1595 )   PDF (611KB) ( 557 )   Save
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    This is a paper dealing with the accumulation and biological cycle of the nitrogen and phosphorus elements of the artificial 20-year-old Kandelia candel community, in the Jiulong Jiang river estuary of Fujian Province, China.The main results of measurements are as follows:1. The amounts of nitrogen and phosphorus in the standing crop of this community were 935.47 kg/ha and 112.02kg/ha; in which the amounts of the two elements in the biomass above ground were 582.86 kg/ha for N and 70.47kg/ha for P, and in the biomass underground were (kg/ha) 353.21 for N and 41.55 for P respectively.2. In biological cycle of nitrogen and phosphorus of this stand, the annual values of the vegetation mineral uptake are (kg/ha yr) 213.31 for N and 21.75 for P, and those of retention of are (kg/ha yr) 83.75 for N and 10.91 for P, and the annual amounts released are (kg/ha yr) 129.52 for N and 10.84 for P respectively.3. The speed of nitrogen recycling period (7 yrs.) is faster than that of phosphorus (10 yrs.). The biological decompositional ratio of the mangrove forest in Fujian is larger than that of the tropical rainforest in Yunnan, and it is possible that this is concerned.with the tidal habitat of the mangrove forest.
    The Dipterocarpaceae Forests in Yunnan Province
    Wang Daming, Yang Shaozeng, Zhu Yongxing
    Chin J Plan Ecolo. 1985, 9 (1):  32-46. 
    Abstract ( 1701 )   PDF (1525KB) ( 751 )   Save
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    Forests consisting of the Dipterocarpaceae have been found in the southeast, south and southwest of Yunnan Province. The forests can be divided into seven types, three of which are excellent mixed forests dominated by trees of Dipterocarpaceae. This article deals with the distributions, habitats, compositions, the characteristics of the community organization, the growing stock and preliminary information of natural regeneration of every kind of the Dipterocarpaceae forests. By the comparison it shows that the Dipterocarpaceae forests in Yunnan are very similar to the tropical rain-forests of Southeast Asia in components, vertical zone of distribution, etc.The dense Dipterocarpaceae forests are rich in aggregate components and have great productivity. They are the valuable natural resources of our country. We must take vital and effective measures for their protection. Further more, to fit in with the needs of forests, we should explore the scope of the Dipterocarpaceae trees and make reasonable use of them.
    Effect of Litter Layer on Natural Regeneration of Companion Tree Species in Korean Pine Forest
    Tao Dali, Xu Zhenbang, Li Xin
    Chin J Plan Ecolo. 1985, 9 (1):  47-58. 
    Abstract ( 1720 )   PDF (670KB) ( 770 )   Save
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    As an integrated part of the research on “The Structure and Dynamics of Korean Pine Forest”, 325 plots were set, treated, sown and periodically observed from 1963 to 1965 in Korean pine forests in the Lesser Khingan Mountains (Xiaoxinganling) to study the effect of removing litter layer or living ground cover on seed germination and seedling survival of aspen, birch, spruce, larch and linden. Significantly negative effect of litter layer was found on seed germination and seedling survival in all species except linden. Some birch seeds were inhibited from germinating but remained alive for 2--3 years. The adaptability of seeds to germinate and survive on litter layer was found to be positively correlated to the seed size. The relation between adaptability of seeds to germinate and survive on litter layer and shade tolerance of seedlings is also discussed.
    The Mangrove in Coast of East Guangdong Province
    Chen Shupei, Liang Zhixian, Deng Yi
    Chin J Plan Ecolo. 1985, 9 (1):  59-63. 
    Abstract ( 1561 )   PDF (252KB) ( 712 )   Save
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    Rhizophora stylosa, Heritiera littoralis and Lumnitzera racemosa are the new records of geographical distribution of the mangrove floristic composition in the coast district of east Guangdong. In the mangrove of this coast district, there are 13 families, 20 genera, 20 species, making up 24% of the total species of mangrove of the world, less than Hainan Island but almost equal to west Guangdong. It shows the physiognomy and structure of shrubland and forest. According to the floristiccomposition, physiognomy, structure and characteristics of habitat, it may be divided into two types: beach-mangrove and coast-semi-mangrove and seven formations.The distribution of mangrove in the coast of east Guangdong indicates the situation of the mangrove of this district in the geographical distribution of mangrove in the world and the tropical character of vegetation and the transition of vegetation from tropics to subtropics in this district.
    The Succession of Forest Communities in the Forest Region of the Greater Xingan Mountains
    Gu Yunchun
    Chin J Plan Ecolo. 1985, 9 (1):  64-70. 
    Abstract ( 1659 )   PDF (401KB) ( 847 )   Save
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    The succession of the main forest communities in the forest region of the Greater Xingan Mountain has been analysed according to checking of 29 plots which were set up in 1954. It was found that the’ forest dominated by Larix gmelinii was the climax in this region, the forest Pinus sylvestris var. mongolica was the edaphic climax, and the forest Betula platyphylla, Betula davurica and Quercus mongolica were secondary forests respectively. They are evolving towards Larix gmelinii forest.
    An Introduction to Five Districts of Vegetation in Zhejiang Province
    Cai Renhou, Zhang Shaoyao
    Chin J Plan Ecolo. 1985, 9 (1):  71-76. 
    Abstract ( 1482 )   PDF (411KB) ( 616 )   Save
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    The 2nd Conference of Editorial Committee of This Acta was Held
    Xian Cheng
    Chin J Plan Ecolo. 1985, 9 (1):  79-79. 
    Abstract ( 1365 )   PDF (70KB) ( 710 )   Save
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    The Seminar on Phytoecology and Geobotany of East China
    Zhang Chaofang
    Chin J Plan Ecolo. 1985, 9 (1):  80-81. 
    Abstract ( 1399 )   PDF (108KB) ( 605 )   Save
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    The Establishment of Ecological Engineering Centre in Beijing
    Wang Xianpu
    Chin J Plan Ecolo. 1985, 9 (1):  82-82. 
    Abstract ( 1360 )   PDF (139KB) ( 840 )   Save
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    Brief Introduction on 《Contemporay Ecology of Japan》
    Jiang Shu
    Chin J Plan Ecolo. 1985, 9 (1):  83-84. 
    Abstract ( 1346 )   PDF (139KB) ( 499 )   Save
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