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    20 January 1995, Volume 15 Issue 1 Previous Issue    Next Issue
    RELATIONS OF δ18O IN PRECIPITATONWITH TEMPERATURE AND PRECIPITATIONAMOUNT IN QINGHAI-XIZANG PLATEAU
    Zhang Xinping, Yao Tandong
    1995, 15 (1):  1-7,99.  doi: 10.13249/j.cnki.sgs.1995.01.1
    Abstract ( 159 )   PDF (2577KB) ( 22 )   Save
    This paper attempts to reveal the regional variation features of δ18O in the Qinghai-Xizang Plateau and the relations between δ18O and influencing factors on the basis of the analyses of precipitation δ18O sampling in the stations:Tuotuohe (34°13’, 92°26’; 4533.1m a.s.1.),Delingha(37°22’N,97°22’E; 2981.5 m a.s.1.)and Xining (36°37’N, 101°46’E; 2261.2 ma.s.1.).The analytic results show that, there are marked positive correlated relations between δ18O and temperatare in the three sampling stations; the amount effect of Tuotuohe is marked while temperature is greater than and equal to 7.3℃, and so is that of Xining while 8.3℃;the correlation of δ18O in sampling stations against temperature and precipitation amount are changeable with temperatare and amount.
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    THE CONTRIBUTION OF LABOR, CAPITAL AND TECHNOLOGY IN REGIONAL INDUSTRIAL GROWTH——Taking the Manufacturing Sector ofState-owned Enterprises 1978-1988 as an Example
    Zhao Lingxun, Cao Yong
    1995, 15 (1):  8-13,99.  doi: 10.13249/j.cnki.sgs.1995.01.8
    Abstract ( 125 )   PDF (2645KB) ( 18 )   Save
    This paper analyzes the contribution of capital and labor inputs and technical change to the growth of output in the manufacturing sector for nine provinces in China during the period 1978-1988.We use a flexible translog production function to analyze each province’s growth process instead of estimating the parameters econometrically.The result shows that even though there are somewhat regional differences,the contributions of capital to regional economic development is the most significant,whereas the contributions of labor to industrial growth are not positive but negative to the regional industrial growth.That means that the problems of surplus employment are very serious for state-owned enterprises and that to leave away surplus employee is the most urgent countermeasure for the state-owned enterprises.
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    DEVELOPMENT OF THE LARGE AND MEDIUM-SIZED CITIES IN THE BOHAI SEA COASTAL ZONE
    Wang Shuhua, Zhang Pingyu, Yang Liping
    1995, 15 (1):  14-23,99.  doi: 10.13249/j.cnki.sgs.1995.01.14
    Abstract ( 157 )   PDF (2997KB) ( 29 )   Save
    The paper is based on practical researches.It analyses 29 cities in the Bohai Sea coastal zone, and probes into their development conditions including location, traffic-transport, tourist resources.marine and mineral resonces which altogether compose the seven major advandages.The paper also summarize both the present characteristics and existing problems of the coastal urban system using methods such as comprehensive quantitative and qualitative analysis, regional comparison and economy radiating field analysis.On purpose of expanding foreign-oriented economy,the three key cities are oriented.Tianjin is the core city in company with two peripheral key cities-Dalian and Qingdao.Also, the other large and medium-sized cities developing trends are defined.These cities will lay a strong fundation for the Huanghai-Bohai Sea economy rim.In addition, some constractive suggestions are conducive to performing key city function, expanding foreing-priented economy, building urban economy development zone and protecting the coastal environment.
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    STUDY ON THE ASSESSMENT MODEL FOR HAZARD DEGREE OF SANDY DESERTIFICATION
    Dong Yuxiang
    1995, 15 (1):  24-29,99.  doi: 10.13249/j.cnki.sgs.1995.01.24
    Abstract ( 152 )   PDF (2635KB) ( 23 )   Save
    Sandy desertification is one of the most important problems in the world.The hazard degree assessment is an important and basic study subject of sandy desertification issues.This paper first analyses the conditions of study on the assessment hazard degree of sandy desertification at home and abroad,establishes the criteria system of hazard degree assessment and gives the classification standards (class limits) of every assessment criterion.The assessment model for hazard degree of sandy desertification is given the first time: where:SDH:index number of hazard degree; Wi:weighting number;Fi:degree index number.This paper gives one simple but very useful method to assess the hazard degree of sandy desertification.At last,Naiman county in Inner Mongolia is taken as an example to examine the assessment model, it has been proved that the assessment model or method is very favourable to assess the hazard degree of sandy desertification.
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    HUMID AND ARID FLUCTUATION DURING THE LAST 10000 YEARS RECONSTRUCTED FROM THE PEATFORMATION IN EASTERN CHINA AND JAPAN
    Bai Guangrun
    1995, 15 (1):  30-38,99.  doi: 10.13249/j.cnki.sgs.1995.01.30
    Abstract ( 116 )   PDF (2763KB) ( 15 )   Save
    Peat formation is considered to be controlled by both water and heat conditions in this paper.A comparison made by the author between present peat distribution and the climatic record of 841 stations in the world during the years of 1961-1970 provides the climatic condition of peat formation.It is well explained by the following equation:Z=5.7K+12-T T(mean air temperature of days with >10℃) respresentes the thermal condition of those days, it can be evaluated from palynological information.Z(water-heat index of peat formation) can be acquired by 14C dating of peat deposits.Therefore,K(ratio of precipitation to evapotranspiration) can be obtained from T and Z.The humid and arid fluctuation curves are figured at Kyoto,Tokyo and Sapporo in Japan, and Beijing, Changchun and Zhenjiang in the eastern part of China.The humid and arid fluctuation of East Asia in the last 10000 years on peat foma-tion are summarized as follows:1)ca.10000-8500 a.B.P.Arid climate is prevalent especially in the northern part of Esat Asia.2)ca.6000-5000 a.B.P.Humid climate accompanied by the warm period“Hyp-sithermal”is generally predominant.The beginning of humid climate is, however, delayed ca.2000 years and the humid period are not coincide with the warm period in the northern part of East Asia.3)After ca.3000 a.B.P.Increased aridity are recognized in the eastern part of China.
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    CHARACTERS OF THE EVOLUTION OF CLIMATE ANDENVIRONMENT DURING THE LAST 10ka YEARSIN AIBI LAKE BASIN, XINJIANG
    Wu Jinglu
    1995, 15 (1):  39-46,99.  doi: 10.13249/j.cnki.sgs.1995.01.39
    Abstract ( 179 )   PDF (2817KB) ( 29 )   Save
    On the basis c’f lacustrine sedimentary profile of Aibi Lake, sequences of evolution of paleoclimate and paleoenvironment in Aibi Lake area have been rebuilt by analysing the sedimentary stratigraphy, bio-stratigraphy and geochemistry as well as the chronological records.The results show that, during the last 10ka years, the general change trends of the paleoclimate in Aibi Lake area can be divided into three stages;(1)10.2ka-8.3kaB.P., a warm-cool dry climate stage; (2)8.3ka-3.5kaB.P., a warmer moist climate stage (specially, 7.3ka-6.4kaB.P.,a relatively stable humid temperate stage); (3) 3.5kaB.P.-present, a draught temperate climate stage, similar to the present climate.In addition, there existed clearly several times of secondary undulations of dry-humid climate,i.e.8.3ka and 7.3ka for dry climate.
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    REMOTE SENSING EXPERIMENTAL STUDY ONLANDUSE DYNAMIC ANALYSIS INBIG URBAN EDGE AREA
    Zheng Xingnian, Hu Baoxin, Cui Weihong
    1995, 15 (1):  47-54,100.  doi: 10.13249/j.cnki.sgs.1995.01.47
    Abstract ( 111 )   PDF (2819KB) ( 17 )   Save
    Taking Chaoyang District of Beijing City as an example, the paper does a study on landuse change in big urban edge area by using remote sensing technology and Geographic Information System (GIS), develops different remote sensing image computer classification methods for landuse investigation in big urban edge area, and analyzes landuse characteristic and change process and tendency on the basis of GIS.The results present that remote sensing image computer classification method based on knowledge has a higher precision for recognizing landuse types, and the combinaton of remote sensing technology and GIS is an effective way for monitoring and studying landuse change of big urban edge area.
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    CHANGES OF YAMZHO LAKE WATER STAGE IN XIZANG
    Liu Tianchou
    1995, 15 (1):  55-62,100.  doi: 10.13249/j.cnki.sgs.1995.01.55
    Abstract ( 111 )   PDF (2658KB) ( 19 )   Save
    The Yamzho Lake is the largest closed inland lake at the north foot of Mt.Himalayas,with a drainage area of 6100 km2.The lake covers an area of 621 km2 with an altitude of 4440 meters and a storage capacity of 16 billion m3.Precipitation is the main recharge source of the lake.Melt water makes up only 16 percent of the total recharge.Yearly lake level variation is within 0.6 meter.Due to self-regulation the highest water level of the lake does not appear in July or August when the rainfall is plentiful but in September or October.In a rainy year the lake level exhibits periodic variations and in a dry year the lake level has a fall tendency.The lake water level variation was influenced by temperature in the past 30 years.The analysis of the data for the last one hundred years shows that there is a tendency of lake level fall, the fall rate is 0.6meter/100 year.
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    A STUDY ON THE EXPANSION DEVELOPMENT OF TOURIST RESORTS——Taking Yangyuan Section, Danxia Scenic Spot as an Example
    Bao Jigang, Peng Hua
    1995, 15 (1):  63-70,100.  doi: 10.13249/j.cnki.sgs.1995.01.63
    Abstract ( 108 )   PDF (2617KB) ( 9 )   Save
    Danxia scenic spot is now facing two problems:a.stagnation of tourist growth from 1983-1992;b.very low rate of overnight tourists,causing low pinancial gains .Danxia scenic spot received more than 200,000 tourists in 1982,both domestic and overseas.Since then,the number of annual tourists has been around 250,000.1987 wint-nessed the best year for Danxia scenic spot with 307,000 tourists.However,1989 saw the worst year with 224,700 tourists.Attention should be paid to the big drop of overseas tourists from 1991 to 1992:while 1991 brought in 44,200 tourists,1992 brought in only 28,200,with a drop of 36.2%.Most of Danxia’s tourists are excursionists.Among the 228,700 domestic tourists in 1992,only 33,000 stayed overnight.It was only 14.46% of the total .The same year saw 28,200 overseas tourists,with 3681 staying overnight.It was 12.85%of the total.From the point of view of stages of tourist area life cycle,Danxia scenic spot is in the stages of consolidation and stagnation.Judging from the fact of tourist resource devleopment in Danxia scenic spot,Danxia’s problems lie on the deficiency in scenic development and the aging of the scenic spot.The solution will be to develop new resource and make a new image.Yangyuan section is a part of Danxia scenic spot.It has its special attraction for tourists and serves as a strong complement for the developed spot.Its development will prevent Danxia scenic spot from decline and therefore rejuvenate.The life cycle of many tourist resorts in China is in the stages of consolidation,stagnation or decline.Some of them can rejuvenate through the expansion of the resorts.Those that have no complements for the developed resorts can only go to decline and then close.
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    A TEST RESEARCH ON WATER AND SOIL CONSERVATION EXPERT SYSTEM IN LOESS REGIONS
    Fu Wei
    1995, 15 (1):  71-79,100.  doi: 10.13249/j.cnki.sgs.1995.01.71
    Abstract ( 102 )   PDF (2804KB) ( 12 )   Save
    This paper presents the approaches and principles for building a Water and Soil Conservation Expert System (WSCES) in loess regions.The system can be used coding.The WSCES can be also used to store,update,inquire,search,analyse,process,display data and images, and to make map automatically.In addition,the system can be used to predict the soil erosion in loess regions precisely and quickly.Furthermore,several plans and decisions for comprehensively harnessing soil erosion can be obtained by consulting with the system,so that users can select a practical program from them for bringing the water under controllig and improving the soil.Moreover,the author makes a test research with the system on soil erosion in Yangdaogou gully of Wangjiagou Watershed in Lishi County, Shaanxi Province, and evaluates the results systematically.
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    BUDGET CONDITION OF WATER VAPOUE OVER NORTHEAET CHINA AND ITS SOURCE
    Cui Yuqin
    1995, 15 (1):  80-87,100.  doi: 10.13249/j.cnki.sgs.1995.01.80
    Abstract ( 93 )   PDF (2717KB) ( 11 )   Save
    Based on an irregular polygon simulating the natural border of northeast China,the amounts of water vapour transpoting for the period 1981-1986 have been computed.It shows that:mean annual water vapour importing and exporting are 60 622.70?108m3 and 60 604.43?108m3,respectively, and the net transporting 18.27?108m3 is a positive.In the whole year, only in Summer, the net importing of water vapour of this region is a positive (+3373.15?108m3).The runoff value in the main flood season for this region is precipitation which are caused by the water vapour impoiting from the outaide surrounding rveas.While the dry season is the dissipating period of water vapour.In this paper, the main importing and exporting boundaries as well as source areas of water vapour are also given.
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    A STUDY ON THE DISTRIBUTION OF SOUTH ANHUI TOUR SECTION
    Lu Lin
    1995, 15 (1):  88-95,100.  doi: 10.13249/j.cnki.sgs.1995.01.88
    Abstract ( 95 )   PDF (2577KB) ( 27 )   Save
    A study on the distribution of tour regions is one of the important study fields of tourism geography.So,the author, with the study on the distribution of south Anhui tour region,makes analyios of the regional tour resource effect,the regional tour openness, the general regional tour distribution and the regional tour roads.On the basis of the analyses, the model of general distribution of south Anhui tour region is put forward.
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