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Table of Content
    Volume 02 Issue 3
    20 August 1994
      
    论文
    Species diversity and its seasonal dynamics of herbs in a broad-leaved korean pine forest on the northernslope or the Changbai Mountain
    Hao Zhanqing, Zhao Sidong, Tao Dali
    Biodiv Sci. 1994, 02 (3):  125-132.  doi:10.17520/biods.1994021
    Abstract ( 2645 )   PDF (495KB) ( 2102 )   Save
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    According to 3 times investigations in early spring (5~20 May), Summer (20 June~10 July) and Autumn(20 Aug. ~10 Sept. ), the diversity of herbs in broad-leaved korean pine forest is very rich and has a greatchange in different seasons. There are about 123 species of herbs (including 6 varieties) in this type offorest. The number of species in early spring, Summer and Autumn is 79, 101 and 98 respectively; theShannon diversity index is 3. 1829, 3. 3140 and 2. 9677; and the Shannon evenness is 0. 7284, 0. 7181 and0. 6473. In early spring, the dominant species are the Early-spring-herbs such as Anemone spp. Corydalisspp. Gagea lutea, and so on. In Summer and Autumn, the dominant species are Meehania urticifolia and Carex spp. The vertical structure and distribution pattern of herbs are different in different seasons.
    VORTEX model and its application on the Management of Chinese River Dolphin (Lipotes vexillifer)population
    Zhang Xianfeng, Wang Ding, Wang Kexiong
    Biodiv Sci. 1994, 02 (3):  133-139.  doi:10.17520/biods.1994022
    Abstract ( 2689 )   PDF (511KB) ( 2979 )   Save
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    VORTEX model, as a computer simulation tool for wildlife population viability assessment (PVA), has beenused extensively on some endangered species management and conservation. In this paper, the VORTEX'sorigination and features are introduced, and the PVA for Chinese River Dolphin in wild is completed byusing VORTEX. The simulation model shows that, at high or medium mortality level, the probability ofextinction for Chinese River Dolphin is 1. 0 or around 0. 5 within the next 100 years. However, theextinction process could take longer than 100 years at low mortality level, and might not occur at very lowmortality level. The starting population size has a small impact on the mean time to extinction of thisspecies, but no effect on the population growth rate (r). The values of r is - 0. 07, - 0. 04, and - 0. 02respectively at high, medium, and low mortality level.
    The effects of human activities on large and middle mammals on Zhoushan Islands -- Analysis of threatened status of large and middle mammals
    Li Yiming, Li Dianmo
    Biodiv Sci. 1994, 02 (3):  140-145.  doi:10.17520/biods.1994023
    Abstract ( 2509 )   PDF (474KB) ( 2196 )   Save
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    The threatened status of large and middle mammals on Zhoushan Islands has been studied according tocomparison of historical records and analysis of fur purchase data in this paper. The results show that therehave been 16 species of mammals on the islands, 5 species of which have been extinction, and 3 species ofwhich are endangered, and the distribution area of 3 species of which have been decreased (the population ofone of 3 species is being reduced), the population of 2 species of which is stable, and the population of 2species has no data. The extinction percentage of carnivores is larger than that of herbivores. The extinctionpercentage of large mammals is higher. The extinction percentage of species on islands is higher than on thenear by land. The methods determining population trend have been discussed.
    Artificial cultivation aud ex-situ conservation of Limonium bicolor
    Qi Qiuhui, Sheng Xiuwu
    Biodiv Sci. 1994, 02 (3):  146-148.  doi:10.17520/biods.1994024
    Abstract ( 2763 )   PDF (224KB) ( 2124 )   Save
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    Limonium bicolor (Flumbaginaceae) belongs to biennial forb growing in the typical steppe. It is an importantparture resource. The beautiful flowers may be used for ornamental purpose. Because the grasslandenvironment is strongly disturbed by human activities, especially the improper picking of flowers, thepopulation of  L. bicolor is gradually reducing. The problem of conservation of the plant has receivedattention. In this paper the possibility of ex-situ conservation of  L. bicolor through the way of artificialcultivation and tranining is dealt with. The temperature is a ecological factor for limited germination andemerged of seedings of  L. bicolor.
    The genetic basies of allozyme analysis (Part 1)
    Wang Zhongren
    Biodiv Sci. 1994, 02 (3):  149-156.  doi:10.17520/biods.1994025
    Abstract ( 2754 )   PDF (567KB) ( 2399 )   Save
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    The correct interpretation on the zymogram is the key to acquire the genetic data , in allozyme analysis. As aphenotype, the banding pattern in a zymogram is based on the quaternary structure of the enzyme protein(the number of subunits),the distribution in the subcellular compartments of the enzyme (the number ofloci), and the ploidy and the genotype of the sample examined. A term of "Zymotype" is suggested to usefor iterpreting the panding patterns. It will lead to a completely wrong conclusion, if the numbers of thebands or the differences of migration rate of the bands are directly used as a measure of genetic diversity or asa numerical characters to calculate the similarity and to make a cluster analysis for a group of samples.
    Biodiversity and tree breeding
    Zhu Dabao
    Biodiv Sci. 1994, 02 (3):  157-161.  doi:10.17520/biods.1994026
    Abstract ( 2587 )   PDF (399KB) ( 1570 )   Save
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    Protecting biodiversity must be emphasized in tree breeding. The breeders used to pay more attention togenetic gain in traditional tree breeding. Otherwise long term breeding aims at maintaining genetic variationof forest population. Abundent biodiversity in natural forest land is the basic for long term breeding. Theproperty and developing tendency of forest population will be studied mainly. So, the direction and object fortraditional tree breeding research as well as the teaching courses for genetics and breeding of tree must beadjusted and supplemented.
    Measurement of biotic community diversity I α diversity (Part 1)
    Biodiv Sci. 1994, 02 (3):  162-168.  doi:10.17520/biods.1994027
    Abstract ( 2422 )   PDF (584KB) ( 2272 )   Save
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    A study on the ordination of forest nature reserves in Jiangxi province
    Liu Renlin
    Biodiv Sci. 1994, 02 (3):  173-176.  doi:10.17520/biods.1994029
    Abstract ( 2396 )   PDF (273KB) ( 1760 )   Save
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    Using the method of principal component analysis(PCA), the relationship between the natural attributes offorest nature reserves and the geographical conditions in Jiangxi was studied in order to find out some reliablenatural attributes which can be used to forecast reasonable places forest protected areas. Based on the resultsof the analysis of ordianation, the distributions of five forest nature reserves established in Jiangxi were alsodiscussed. The conclusion shows that the information content of the first three principal components is 87.73%, a good effect of decline dimension. By analysing the different sum of loadings of natural attributes onthe first three principal components and the dispersion of natural attributes, 12 natural attributes have beendefined reasonable for evaluation or forecast of nature reserves. All these indicate that the method of PCAcan be used to program nature reserves.
    Landscape conservation and Red Book for threatened landscapes
    Chen Changdu
    Biodiv Sci. 1994, 02 (3):  177-180. 
    Abstract ( 2691 )   PDF (343KB) ( 2248 )   Save
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    Most of  the landscapes on earth are products of mutual actions of natural processes and human culturalprocesses, and are stable types of long-term adaptation as well as evolutionary formation. They may betaken as model for coordinating the interrelationships between human beings and their environment, sothey are of  important scientific, cultural and pilot significances. Nevertheless, during the recent decades,along with the rapid growth of human population and use of new technologies, various landscapes of  the world are severely threatened. They are confronting deterioration, and some of  them are on the way toextinction, it is an urgent current task to conserve and rescue parts of the valuable landscapes. In 1991,within the CESP of  IUCN, established a Working Group on Landscape Conservation and worked out aLandscape Conservation Program. Two workshops on landscape conservation, being held separately inLtaly and England, were followed. A case study was also engaged in the Create of Greece. Now, the Red Books for Threatened Landscapes and Red Lists for Endangered Landscapes have been set about.
    Brief iutroduction on the success of captvie breeding of rare birds in the Beijing Zoo
    Li Shuzhong
    Biodiv Sci. 1994, 02 (3):  181-183. 
    Abstract ( 2438 )   PDF (210KB) ( 1976 )   Save
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