Please wait a minute...
Table of Content
    Volume 03 Issue 3
    20 August 1995
      
    论文
    Restoration dynamics of degraded grasslands in the typical steppe zone of Inner Mongolia
    Li Yonghong
    Biodiv Sci. 1995, 03 (3):  125-130.  doi:10.17520/biods.1995022
    Abstract ( 2126 )   PDF (393KB) ( 2115 )   Save
    Related Articles | Metrics
    Monitoring restoration of the degraded grasslands can provide knowledges on the restoration processesand mechnisms,reveal the factors limiting restoration,and is therefore a base for making ecological measures for fast restoration with the lowest input. The natural restoration of a degraded grassland dominated by Potentila acaulis,Artemisia frigida and Carex duriuscula were monitored biennually since 1985in the Xilingol Steppe Biosphere Reserve, Inner Mongolia. The results showed that, through 8-years'restoration,the height of grassland community greatly increased;while its cover and phytomass had anincrease at first,and then a decrease. The species richness of the community had only a slight increase ,the reason of which was that the grassland was co-evoluted with wildlife,especially the ungulates,andalso had a long grazing history of domestic animals,so plants had high tolerence to grazing pressure,andexclosure of grazing could not make a great increase in species richness. The community succession weremainly due to the changes in dominance of different species. The dynamic analysis of the community equitability during the restoration indicated that the community had not restored to the stable state of theoriginal steppe grasslands corresponding to the regional climate.
    Dependence of natural regeneration of Korean Pine on animals--An outclosure experiment
    Tao Dali, Zhao Dachang, Zhao Shidong, Hao Zhanqing
    Biodiv Sci. 1995, 03 (3):  131-133.  doi:10.17520/biods.1995023
    Abstract ( 2500 )   PDF (204KB) ( 1696 )   Save
    Related Articles | Metrics
    The seeds of Korean Pine (Pinus koraiensis sieb. et aucc. )can not release from mature cones automatically,but were .taken out and distributed by rodents and birds. To test the possibility that the seeds maygerminate within cones, cones were enclosed in wire cages and put on Korean-pine forest ground inSeptember 1992. Ten cones were recovered and examined in August 1994. Germination were showed in 9cones. For 115 fully developed seeds from 5 cones, 11. 3% of them germinated, 54. 8% has rotted and33. 5% remained healthy but ungerminated. All the seedlings in cones showed abnormal curling appearance. The abnormality of seedlings was discussed in relation to the position of seeds in cones and the orientation of the embryo in the seeds. The results supported the conclusion that Korean Pine can not regenerate naturally without the help of wild animals so that the related animals should be viewed as agroup of key stone species in deciduous-Korean Pine forest
    Preliminary approach on the soil microbial ecological effect in the Great Wall Station area, Antarctic
    Xiao Changsong, Liu Dali, Zhou Peijin
    Biodiv Sci. 1995, 03 (3):  134-138.  doi:10.17520/biods.1995024
    Abstract ( 2615 )   PDF (297KB) ( 1861 )   Save
    Related Articles | Metrics
    Soil microbes collected from Great Wall Station area in Antarctica were studied. Results showed thatthe total number of ammonification bacteria was 104~106 cells/per gram of soil. Ammonification bacteria belong to 7 genera, Micrococcus, Staphylococcus, Pseudomonas, Bacillus, Alcaligenes, Flavobacterium,Arthrobacter. The total number of nitrogen-fixing bacteria was 105~107 cells/g,which included only Azotobacter. The total number of nitrobacteria was 104 cells/g,and this nitrobacteria included Nitrobacter and Nitrococcus. The total number of fungi was 103 cells/g, such fungi belong to 5 genera,Penicillium,Chrysosporium , Cladosporium, Aspergillus and Eurotium. The total number of denitrifying bacteria was102~ 104 cells/g, This bacteria were Pseudomonas,Bacillus and Micrococcus. Actinomycete were also identified Streptomyces, Micromonospora and Nocardia. The appearing rate of psychrophilic miorobes(growing below 12℃) are 42% for Pseudomonas,  35% for Bacillus, 31%for Mcrococcus, 27% for Arthrobacter, 58% for Penicillium, 54% for Cladosporium, 81% for Nitrobacter and 88% for Azotobacter; denitrifying bacteria are 58% for Pseudomonas and 38% for Bacillus. The relationship between soilmicrobes and  total C and N of soil samples, and the ecological effect of soil microbes participating nitrogen cycle in this area were also discussed.
    Studies on the diversity of Naidong Camellia in Qingdao Ⅰ Distribution and morphological variation
    Wang Shaoping, Wang Renging, Li Li
    Biodiv Sci. 1995, 03 (3):  139-142.  doi:10.17520/biods.1995025
    Abstract ( 2532 )   PDF (215KB) ( 2184 )   Save
    Related Articles | Metrics
    The wild ancient camellia (Camellia japonica L. ) is distributed on off-shore islands near Mount Lao inQingdao. As the cold-resistant type,it was so-called"Naidong Camellia" by the local people. Accordingto the stable morphological diversity,the Naidong Camellia can be divided into such groups as'long androecium","less petais" ,"grand flower", etc. Naidong Camellia on off-shore islands in Qingdao has attracted much attention not only for the high appreciating value,but also for its being natural gene-poolof Camellia in North China. This paper dealt with the distribution of Naidong Camellia and its presentstatus,some ecobiotic traits and the morphological variation. The siginificance of the studies for NaidongCamellia diversity was also discussed.
    The significance of conservation of domestic animal diversity in China
    Chen Youchun
    Biodiv Sci. 1995, 03 (3):  143-146.  doi:10.17520/biods.1995026
    Abstract ( 2454 )   PDF (314KB) ( 1973 )   Save
    Related Articles | Metrics
    China is one of the richest country at domestic animal diversity in the world. The data from observationand researches in the field of genetic resources of livestock revealed that according to the ecomorphological characteristics,Chinese local breeds have had their blood merged from subspecies within each oftheir given species. Regarding to the related wild species domestic animals not just the continuative varieties of them,but also possesses good complementarity with them and superiority in sustainable use.The cryopreservation technology for conserving germplasms developed in animal reproduction has beenthe ready technics which are reliable approach to the research on population conservation and variabilityat all.
    The biology and conservation of Tsuga longibracteata
    Lin jinxing, Hu Yushi, Wang Xianpu, Wei Lingbo
    Biodiv Sci. 1995, 03 (3):  147-152.  doi:10.17520/biods.1995027
    Abstract ( 2332 )   PDF (398KB) ( 2126 )   Save
    Related Articles | Metrics
    Tsuga longibracteata is one of the rare gymnosperms endemic to China. With the changes in environmentand ecosystems,the total number of individuals has decreased rapidly and it is considered an endangeredplant on the brink of extinction. In this paper, a broad literature has been reviewed concerning its habit,morphology, structure,karyotypes , growth traits and wood properties,geographic distribution,ecologicaland community characteristics. Although controversy still remains about its systematic position,the authors support the conclusion that the plant should be validated as a genus,Nothotsuga,in Pinaceae basedon the features reviewed. Consequently,the reasons for making the plants to the endangered state havebeen analysed and the effective measures have been put forward to conserve the rare species.
    The position of forest parks in protected areas in China
    Xue Dayuan, Bao Haosheng
    Biodiv Sci. 1995, 03 (3):  170-173.  doi:10.17520/biods.1995030
    Abstract ( 2497 )   PDF (334KB) ( 2040 )   Save
    Related Articles | Metrics
    Based on the situation for rapid deyelopment of the forest parks in China,the properties and functionsfor conservation of the forest parks are elucidated and the concept of "the State Protected Area System"is put forward. By the concept,the reserves,forest parks and scenic areas in China are considered as thethree components of the System. Furthermore, the features f present status, relationships between thecomponents and their positions among the system are analysed respectively. Meanwhile the suggestionsof enhancing the management of forest parks are presented in the paper.
    Palm Leaves Buddhism Sutra Culturc of Xishuangbanna Dai and plant diversity conservation
    Xu Zaifu, Liu Hongmao
    Biodiv Sci. 1995, 03 (3):  174-179.  doi:10.17520/biods.1995031
    Abstract ( 3214 )   PDF (406KB) ( 2004 )   Save
    Related Articles | Metrics
    Raising public consciousness,supporting women and youths involved in protection-action are the important strategy for biodiversity conservation. Indigenous knowledge and biodiversity management thereforehas been paid special attention as a hot point by international society. The paper discusses the relationship between Palm Leaves Buddhism Sutra Culture and plant diversity conservation and its sustainabledevelopment by the example of Xishuangbanna Dai nqtionality including Buddhas and plant,plant usedfor carve Buddist sutra,timber trees used for temple construction,plants for offering Buddhas and plantplanted in temple yards etc..
    An introduction to Convention on Biological Diversity (part 3)
    Biodiv Sci. 1995, 03 (3):  180-180. 
    Abstract ( 2229 )   PDF (70KB) ( 1466 )   Save
    Related Articles | Metrics

  • wechat:swdyx_wx