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    10 April 1984, Volume 3 Issue 02
    A SIMULATED DYNAMIC STUDY ON NO3- LEACHING IN THE SOIL-PLANT SYSTEM OF BEIJING-TIANJIN-THE BOHAI SEA REGION CAUSED BY SEWAGE IRRIGATION
    Gao Zhengmin
    1984, (2):  1-7. 
    Asbtract ( 1320 )   PDF (362KB) ( 164 )  
    To estimate the leaching rate of NO3- in the soil-plant system of Beijing-Tianjin-the Bohai Sea region caused by sewage irrigation, a simulated study with open lysimeter is carried out. The results show that when excess of NO3- beyond the intake ability of soil-plant system is produced, it may be a potential pollutant to the ground-water, which must be paid much attention in practice.
    A RESEARCH OF THE BIOPRODUCTIVITY OF KOREAN PINE BROAD LEAF FOREST AND ITS SECONDARY FOREST OF POPLAR-BIRCH
    Li Fei
    1984, (2):  8-12. 
    Asbtract ( 1237 )   PDF (232KB) ( 236 )  
    With Korean pine broadleaf mixed forest on the northwestern slope of Chanfbai Mountain region as the object of study, the biomass and net productivity of its aerial and subterranean parts are estimated. The results show that as a regional climax community, Korean Pine broadleaf forest has a larger biomass and net productivity, and the succession community, poplar-birch forest, has a smaller biomass and a medium net productivity. These xesults provide basic data for the study of mass-and energy transformation and nutrient circulation in Korean pine and birch communities.
    AN APPROACH TO THE CORRELATION BETWEEN ECOLOGICAL ENVIRONMENT AND TEA OUALITY
    Huang Shoubo
    1984, (2):  13-16. 
    Asbtract ( 1322 )   PDF (293KB) ( 311 )  
    In our country, the quality of tea is reduced because of the high temperature and drought in Summer and the dislocation of ecological balance.The author suggests that in order enhance the tea quality, it is necessary to make afforestation, handle capital, construction of tea garden well, select suitable tea-growing ecological region, raise the proportion of spring tea and improve the quality of summer and autumn tea.
    STUDY ON THE ECOLOGICAL CHARACTERISTICS OF SPHAEROTILUS IN ACTIVATED SLUDGE
    Zhou Qunying, Wang Shifen, Zhao Yunhua, Xie Shumin
    1984, (2):  17-20. 
    Asbtract ( 1358 )   PDF (916KB) ( 264 )  
    Seasonal isolation of Sphaerotilus from activated sludge has been made for three years. It is shown that the appearance of Sphaerotilus varies considerably with environmental conditions, especlally with temperature and water quality.Sphaerotilus can't be isolated from activated sludge at 30—36℃ but grows well at 20—28℃. 7 strains of Sphaerotilus are isolated from mixture of domestic sewage and industrial effluents and dye waste water.
    BREEDING HABITS OF THICK-BILLED REED WARBLER (PHRAGAMATICOLA AEDON RUFESCENS, STEGMAN)
    Gao Wei
    1984, (2):  21-25. 
    Asbtract ( 1400 )   PDF (324KB) ( 192 )  
    Thick-billed reed warbler is a beneficial bird for agriculture and forestry. According to the field observation on the northern slope of Changbai Mountain in 1979—1981, the breeding habits of this bird were studied with respect to the selection and distribution of nest area, nest building, incubation, brood feeding and eating patterns.
    PHILOSOPHICAL FUNDAMENTALS OF AGRO-ECOLOMICS
    Deng Honghai
    1984, (2):  26-29. 
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    It is proved that the systematization of knowledge of agro-ecology and agro-economics is a concretization of the universal principles of materialist dialectics in the agro-ecolomics.
    RECLAMATION AND ECOLOGICAL BALANCE IN THE YELLOW RIVER DELTA
    Gu Fengtian
    1984, (2):  30-32,52. 
    Asbtract ( 1116 )   PDF (299KB) ( 185 )  
    In this paper, according to the principles of ecology, an attempt is made to reveal the destruction of ecological balance in the Yellow River delta by unleasonable reclamation and put forward the ways of developing reclamation affairs in future.
    ECOLOGICAL PROBLEMS OF THE DALINUOER LAKE
    TAO YAN
    1984, (2):  33-35. 
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    This paper generalized the ecological evolution of the Dalinuoer Lake and the problems existed at present, and put forward some suggestions on the conservation of ecological balance.
    THE ROLE OF PHOTOSYNTHETIC BACTERIA IN ECOSYSTEM
    Wei Kaimei
    1984, (2):  36-38. 
    Asbtract ( 1238 )   PDF (192KB) ( 194 )  
    This paper discussed the role of photosynthetic bacteria in ecosystem. Photosynthetic bacteria can utilize solar energy to assimilate carbon dioxide and fix nitrogen. The uracil and proline produced by it can increase the yields of rice and other crops. The detox-cation of it can also improve the growth conditions of crops. Utilization of photosynthetic bacteria for purifying various kinds of wastes is beneficial to the public health, and its by-products can be used as fodder.
    THE ROLE OF FIRE IN THE ECOLOGICAL EVOLUTION OF MANKIND
    Yu Mouchang
    1984, (2):  39-41. 
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    From the viewpoint of dialectical materialism, this paper makes an exposition of the role of fire in the various stages of mankind's ecological evolution, indecates the duality of fire and emphasizes the necessity of utilizing fire for the construction of material civilization.
    FROM BIOSPHERE TO INTELLECTOSPHERE
    Xu Tianfen
    1984, (2):  42-44,25. 
    Asbtract ( 1340 )   PDF (295KB) ( 221 )  
    This paper discusses the development from biosphere to intellectosphere, emphasizing the anti-action of intellectosphere to biosphere and insisting that only if the intellectosphere and technicosphere are improved, can balance of biosphere be maintained.
    ON THE PROBLEM OF ECOLOGIC DEVELOPMENT
    Li Jinchang
    1984, (2):  45-47. 
    Asbtract ( 1222 )   PDF (326KB) ( 225 )  
    This paper discussed the origin of the theoretical concept of ecologic development and introduces the work done by the United Nations Environment Programme under the guidance of this concept.