Loading...

Table of Content

    25 December 1993, Volume 8 Issue 4 Previous Issue    Next Issue
    Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    SOME PROBLEMS ON REGIONAL BIODIVERSITY CONSERVATION RESEARCH
    Jiang Youxu, Liu Shirong
    1993, 8 (4):  289-298.  doi: 10.11849/zrzyxb.1993.04.001
    Abstract ( )   PDF (615KB) ( )   Save
    Research in regional biodiversity conservation, as an application project based on ecological theory as well as a social practical program, should provide manipulative and operative techniques and measures for a certain conservation action plan. The best and more active way to protect regional species diversity is protecting and controlling the ecosystem diversity. A reference research guideline is given in this paper.
    Related Articles | Metrics
    THE HEALTH-PROTECTING VALUE OF PHYLLANTHUS EMBLICA L. AND ITS PROSPECTS FOR EXPLOITATION AND UTILIZATION
    Liu Fengshu, Hou Kaiwei, Li Shaojia, Yang Chenwu, Zhao Ping
    1993, 8 (4):  299-306.  doi: 10.11849/zrzyxb.1993.04.002
    Abstract ( )   PDF (516KB) ( )   Save
    Phyllanthus emblica L. that distributes extensively in the mountainous and semimountainous areas of southern China is a species of wild or cultivated fruit tree with medical value. It has plentiful nutrition and is high in vitamin C. content. The research results of external simulation test, animal test, human body test and clinical test in disease area have shown that the fruit juice of phyllanthus emblica L. can block the synthesis of N-nitrosocompound, which is a strong carcinogen in human body. The block rate is more than 90% and is 3-4 times higher than that of V. C of the same concentration. It is also discovered that the juice contains superoxide dismutase (SOD). The activity of SOD is 964. 28 units per millimetre of fresh juice. The activity of SOD in blood can increase 1. 5 times after an old man drinks the juice for 2 months. So the juice has evident effect in resisting cancer and slowing down senescence. China is very rich in phyllanthus emblica L. resource and using its fruits to treat disease has long been a custom of the people. So its fruits have great exploitation value. This paper expounds in detail the health-protecting value of phyllanthus emblica L. and introduces briefly the present conditions and prospects of its exploitation and utilization.
    Related Articles | Metrics
    THE EXPLOITATION VALUE OF CHINESE ALPINE RUSH(EULALIOPSIS BIN ATA)AND ITS PRESENT STATE AND PROSPECTS IN CHINA
    Wang Qingfeng
    1993, 8 (4):  307-313.  doi: 10.11849/zrzyxb.1993.04.003
    Abstract ( )   PDF (497KB) ( )   Save
    Chinese alpine rush (Eulaliopsiss binata) is a wild plant resource and only exists in some countries of Asia, such as China and India. It especially deserves to be exploited in the southwest mountainous area of China. In this paper,the important and special roles of this plant in enabling mountainous people's to eliminate poverty and get wealth,finding ways for the surplus labour, mitigatiung the serious shortage of raw materials for manufacturing paper, improving the quality and increasing the varieties of paper in China,and checking soil erosion and restoring the ecological balance are thoroughly discussed under the subjects of Chinese alpine rush's economic, ecological and social effects. The status quo of the exploitation and utilization of this plant in China is also analysed. It is pointed out that" forming a national coordinated organization specifically about producting, selling and the scientific research of Chinese alping rush"," studying systematically how to domesticate Chinese alpine rush into a cultivated cash crop" ,"searching after international academic exchange" and others are the seven problems to which immediate attention should be paid in the present exploitation and utilization of Chinese alpine rush.
    Related Articles | Metrics
    UTILIZATION AND PROTECTION OF THE LICORICE GRASSLAND RESOURCE IN THE ARID REGION OF CHINA
    Qiu Mingxin, Liu Jiaqiong
    1993, 8 (4):  314-321.  doi: 10.11849/zrzyxb.1993.04.004
    Abstract ( )   PDF (496KB) ( )   Save
    There are thirteen species of licorice in the world. China has eight of them. Five species are commonly seen in the desert region. They are Glycyrrhiza uralensis,Glycyrrhiza inflata,etc. , They form various licorice grasslands. These grasslands distribute in various ecological environment. The distribution of Glycyrrhiza uralensis grassland is the widest. The Licorice grassland can be utilized for many aims,for example, grazing, cutting grass,gathering drugs,reclaiming wasteland and afforestation. At present, it has been utilized extensively. Grazing and gathering drugs are most common.It is a pity that there are serious problems existing in the way of utilization. For example, there is great area of licorice grassland destroyed seriously owing to digging licorice disorderly,not a few licorice grasslands have become waste fields and desertified lands owing to reclaiming the wasteland unsuitably,some licorice grasslands have deteriorated obviously owing to the habitat's becoming droughty ,and soil salinization has made some licorice grasslands develop poorly so as to be succeeded by salt-enduring vegetation.If people want that this multi-purpose natural resources,the licorice grassland,can be utilized lastingly, they have to pay attention to the protection of its soil and environment. This includes preventing wind and water erosion of soil, controlling soil salinization, preventing the ecological environment from becoming droughty,making efforts to plant trees and herbs and so on.
    Related Articles | Metrics
    A STUDY ON THE AMOUNT OF SOIL EROSION UNDER THE PRIMARY SUBTROPICAL MOUNTAINOUS EVERGREEN BROAD-LEAF FOREST
    Li Changhua
    1993, 8 (4):  322-332.  doi: 10.11849/zrzyxb.1993.04.005
    Abstract ( )   PDF (697KB) ( )   Save
    We apply the gaging weir approach to make the research on the amount of soil erosion under the original subtropical mountainous evergreen broad-leaf forest of a small watershed in the Jiu-lian mountain reserve,Jiangxi province.This small watershed is of the steeper type and its area is 14. 4 ha. In the five years from 1986 to 1990 , we got some results of the observation and survey of the soil erosion in the region. The annual sediment deposited in the silt trough of the gaging weir is about 530-1820 kg. The annual solid flow from the notch of the weir is about 70-330 kg/ha,and the organic matter makes up about 15% of the whole erosion amount.We make an analysis on the basis of the results of observations, and find out that the annual erosion amount mainly depends on the precipitation intensity. The annual erosion amount will markedly increase in the year when there are rainstorms and more intensive rains. Because soil erosion is mainly caused by surface flow, but the water permeability of the soil under the evergreen broad-leaf forest is very good.and about 97% of the precipitation in the small watershed can permeate into the soil,therefore the erosion amount under the evergreen broad-leaf forest in the small watershed is little.
    Related Articles | Metrics
    THE VERTICAL-ZONE DIVISION OF THE AGROCLIMATIC RESOURCES OF THE MOUNTAIN AREAS IN THE BAILONG RIVER WATERSHED, SOUTH GANSU PROVINCE,AND ITS EVALUATION
    Yin Dong, Yu Yousen, Li Xiangge
    1993, 8 (4):  333-339.  doi: 10.11849/zrzyxb.1993.04.006
    Abstract ( )   PDF (452KB) ( )   Save
    In this paper, the analysis method of the agroclimatic index has been introduced in dividing the vertical zones of the agroclimatic resources of the mountain areas in the Bailong river watershed , south Gansu Province, and the results are successful. The conditions of agroclimatic resources of each zone are also evaluated and analyed in this paper.
    Related Articles | Metrics
    APPROACH ON THE FRUIT TREE RESOURCES AND ITS EXPLOITATION IN NIYANG RIVER BASIN OF XIZANG AUTONOMOUS REGION
    Ren Guanghua, Lai Shideng
    1993, 8 (4):  340-346.  doi: 10.11849/zrzyxb.1993.04.007
    Abstract ( )   PDF (493KB) ( )   Save
    The fruit tree resources of Niyang River Basin of Xizang are rich. The artificial fruit trees consist of 9 species and more than 90 varieties,such as apple (Malus pumila),pear(Pyrus) ,peach ( Prunus persica (L. ) Batsch), plum (Prunus spp. ) .apricot (Prunus armeniaca) and grape (Vitis virifera). Wild fruit trees consist of 7 families, 16 genera and 41 species. At present,the utilization of these resources are at a low level. There arc great potentialities for development.This paper gives some ways of utilization of the fruit trees in the area. On the basin between Cirab Commune and Pai Commune of the lower reaches of Niyang River and Yarlungzangbo River,the fresh fruit trees and dried fruit plantation areas in "Y "shape should be developed into a production base of fruits (dried fruits )of Xizang. The existed orchards should be fully utilized and fruit processing factories should be established in order to meet the need of fruits on the market of Xizang.
    Related Articles | Metrics
    A STUDY ON DEVELOPING CORN IN THE NIYANG RIVER REGION OF TIBET
    Cheng Shengkui, Xu Liukang, Bai Baoliang, Feng Hong
    1993, 8 (4):  347-355.  doi: 10.11849/zrzyxb.1993.04.008
    Abstract ( )   PDF (571KB) ( )   Save
    The Niyang river region is situated in the Linzhi prefecture of Tibet. The area of its farmland accounts for 64. 7% of the area of Linzhi. The development of planting industry has great influence on the local agricultural development. At present, the planting structure in the region is dominated by the cryophilic grain crops such as winter wheat,highland barley,etc. and the agro-climatic resources such as the temperature and precipitation in the three summer months have not yet been fully utilized. Considering the above fact and other reasons there is a need of a new strategy for the development of planting industry in the region.The theoretical analysis and partial practices have shown that developing corn as a high-quality feed grain is recommendable, because the development of corn can change the present monoculture structure of cool-season grain corps to a tribasic crop structure of grain. Cash crop and forage, including both cryophilic crops and thermophilic crops. As a result of the change in corp structure,it is easier to realize (1)the good combination of farming and animal husbandry, (2)the full and rational utilization of agroclimatic resources,and (3)speeding up the transformation of grain from food to feed and raising the transformation benefits.According to the thought mentioned above,the possibility,necessity,importance,developmental scale and strategic countermeasures of developing corn in the region are discussed fully in the paper.
    Related Articles | Metrics
    A STUDY ON THE AGRICULTURAL DISASTER SITUATION AND ITS DYNAMIC CHANGE IN THE AGRICULTURAL-PASTORAL BELT OF INNER MONGOLIA
    Chen Jin, Li Qiang
    1993, 8 (4):  356-363.  doi: 10.11849/zrzyxb.1993.04.009
    Abstract ( )   PDF (535KB) ( )   Save
    In this paper, the agricultural-pastoral belt of Inner Mongolia (a very typical region with heavy agricultural disasters)is selected as a study area. Through a series of indexes that reflect the agricultural disaster situation, the present conditions and spatial distribution regularity of the disaster situation are analyzed. There are four principal kinds of agricultural disaster situation. By using the index of product deciation rate, according to the method of Fuzzy Classification, the regions with the same disaster situation are divided. At the same time,the laws of the dynamic change and the regional difference of agricultural disaster situation are discussed. It has been found that in different regions there are different characteristics about the period when the product reduction year occurs,the degree of product reduction and the related hazard-formating factors.
    Related Articles | Metrics
    DYNAMIC ANALYSIS OF THE CLIMATIC PRODUCTIVE POTENTIAL IN INNER-MONGOLIA AUTONOMOUS REGION
    Xie Yun
    1993, 8 (4):  364-370.  doi: 10.11849/zrzyxb.1993.04.010
    Abstract ( )   PDF (436KB) ( )   Save
    Inner-Mongolia is located in the peripheral area of the Monsoon climate region. The dynamic analysis shows that the climatic productive potential there has great variation from year to year, especially in the region where water is a dominant limiting factor. Using the empirical orthogonal function (EOF),the result of the temparal and spatial analysis reveals that the variation of the productive potential synchronizes with time and has regional difference in variation amplitude and that its variation in the east is opposite to that in the west.
    Related Articles | Metrics
    THE SCENERY RESOURCE MANAGEMENT SYSTEM OF THE USA AND ITS METHOD
    Wang Xiaojun
    1993, 8 (4):  371-380.  doi: 10.11849/zrzyxb.1993.04.011
    Abstract ( )   PDF (484KB) ( )   Save
    This paper structurally introduces the content and method of the American scenery resource management system. The introduction includes the background, objective, theory and application range of the system and emphatically describes the structural frame of the system as well as the scenary quality assessment,the senstivity level,the visual management objective and the visual impact assessment. Finally, the system is evaluated in respects of application and methodology.
    Related Articles | Metrics
Share: