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2.
CHENG Shu-lan OUYANG Hua NIU Hai-shan WANG Lin ZHANG Feng GAO Jun-qin TIAN Yu-qiang 《中国地理科学(英文版)》2004,(3)
1INTRODUCTIONDesertification is one of the most serious land degrada-tion, which results in the deterioration of physical, che-mical, and biological characteristics of soils (UNEP, 1992). Soil organic carbon (SOC) was considered to be a key index in evaluation of soil quality, soil degradation and soil C sequestration(SCHLENGSINGER etal., 1990; FENG etal., 2002; WANG etal., 2003). Many researchers have reported the correlations among desertification restoration, soil C s… 相似文献
3.
《中国地理科学(英文版)》2004,14(4):296-303
1INTRODUCTIONUrbanrelationshipaswellasurbansystemhas beenthemostimportantandlastingdirectioninthestudyofur-bangeographysinceCHRISTALLER(1933)putfor-wardthecentralplacetheory.Alongwiththepaceofglobalizationinthe1980s,somepioneer researchessen-sitivelyexpoundedaworldcitysystem,includingworldcity,internationalcity,nationalcity,regionalcityandlocalcity(FRIEDMAN,1986).Lotsofresearchesfo-cusedonthedevelopingmechanismofthebigcitiesandurbansystemnetwork(GU,2000;ZHOU,1997;CUI,1992;HUeta… 相似文献
4.
《中国海洋湖沼学报》1983,(2)
Editor-in-chiefTseng,C.K.(曾呈奎),Member of the Academia Sinica(The Chinese Academy of Sciences)Division of Biology.Research Professor(Marine Biology),Academia Sinica Instituteof Oceanology,Qingdao(Tsingtao),Shangdong(Shantung).Members of the BoardHe Chongben(C.P.Ho)(赫崇本),Professor(Physical Oceanography),Shandong Collegeof Oceanology,Qingdao,Shandong.Li Shanghao(S.H.Ley)(黎尚豪),Member of the Academia Sinica Division of BiologyResearch Professor(Limno-Phycology),Academia Sinica Institute of Hydrobiology, 相似文献
5.
SUSTAINABLE LAND USE PLANNING BASED ON ECOLOGICAL HEALTH——Case Study of Beiwenquan Town, Chongqing, China 总被引：1，自引：0，他引：1
SHAOJing-an WEIChao-fu XIEDe-ti 《中国地理科学(英文版)》2005,15(2):137-144
1IN T R O D U C T IO N Since the20th century, ecosystem and even biosphere has been facedwith threat sunder theimpactsofclimate and humankind together(E RICH and ULRIKE , 2002 ; G LADE ,2003 ;O LGERTS etal.,2005 ).Land isan im- portantpartof natureecosyst… 相似文献
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A medium-sized delesseriaceous red alga has been collected from the subtidal area of the northern Huanghai Sea coast. The characteristics of the specimens precludes their being placed in any genus defined by the currently accepted criteria. Tsengiella gen. nov., with T. spinosa sp. nov., as the type and only known species, is created and allied with the Hypoglossum group of-the Delesserioideae (Delesseriaceae, Ceramiales, Rhodophyta). 相似文献
7.
1INTRODUCTIONRegional impact of tourism has been a basic content oftourism geographical research (BAO and CHU, 1999).A large number of studies have shown that the develop-ment of tourism industry based on service has profoundpositiveandnegative impacts on… 相似文献
8.
FUZZY SYNTHETIC EVALUATION ON RESIDENT''''S PERCEPTIONS OF TOURISM IMPACTS——Case of Jiuzhaigou National Park, Sichuan Province, China 总被引：2，自引：2，他引：0
1INTRODUCTIONCommunity residents form an important part of tourismdestinations and play a crucial role in the protection anddevelopment oftourism resources. The Tourism Agenda21 advocates that the development of tourism industryshouldconsider the interestsofthe host residentsand en-sure long-term viability beneficial towards destinationcommunity (LIU, 2000). Yet in manyinstances tourismdevelopment proves detrimental to host communities(LANKFORD and HOWARD, 1994; LIU and VAR,1986)… 相似文献
9.
1 INTRODUCTION In marine waters, water temperature and nutrient Si control the temporal and spatial variation of the phytoplankton growth (Yang et al., 2006). The effect of nutrient Si and water temperature on the mecha- nism of phytoplankton growth has p… 相似文献
10.
Image of Landscapes in Ancient Water Towns—— Case Study on Zhouzhuang and Tongli of Jiangsu Province 总被引：1，自引：0，他引：1
LI Yabing ZHANG Jie CHEN Youjun 《中国地理科学(英文版)》2006,16(4):371-377
1 Introduction Image is generally a mental picture which is built on an environmental impression. Since the 1960s, the urban image has become a new field for studying urban spatial structure from perceptive of environment (Gu and Song, 2001). Lynch (1960) considered that urban image implies “discernable” and “impressive”. However, the urban image emphasizes urban spatial structure and landscapes. In tourism the image of destination has developed into two components closely interrelated: … 相似文献
11.
To solve nutrient flux and budget among waters with distinct salinity difference for water-saltnutrient budget,a traditional method is to build a stoichiometrically linked steady state model.However,the traditional way cannot cope appropriately with those without distinct salinity difference that parallel to coastline or in a complex current system,as the results would be highly affected by box division in time and space,such as the Changjiang(Yangtze) River estuary(CRE) and adjacent waters(30.75°-31.75°N,122°10′-123°20′E).Therefore,we developed a hydrodynamic box model based on the traditional way and the regional oceanic modeling system model(ROMS).Using data from four cruises in 2005,horizontal,vertical and boundary nutrient fluxes were calculated in the hydrodynamic box model,in which flux fields and the major controlling factors were studied.Results show that the nutrient flux varied greatly in season and space.Water flux outweighs the nutrient concentration in horizontal flux,and upwelling flux outweighs upward diffusion flux in vertical direction(upwelling flux and upward diffusion flux regions overlap largely all the year).Vertical flux in spring and summer are much greater than that in autumn and winter.The maximum vertical flux for DIP(dissolved inorganic phosphate) occurs in summer.Additional to the fluxes of the Changjiang River discharge,coastal currents,the Taiwan Warm Current,and the upwelling,nutrient flux inflow from the southern Yellow Sea and outflow southward are found crucial to nutrient budgets of the study area.Horizontal nutrient flux is controlled by physical dilution and confined to coastal waters with a little into the open seas.The study area acts as a conveyer transferring nutrients from the Yellow Sea to the East China Sea in the whole year.In addition,vertical nutrient flux in spring and summer is a main source of DIP.Therefore,the hydrodynamic ROMS-based box model is superior to the traditional one in estimating nutrient fluxes in a complicated hydrodynamic current system and provides a modified box model approach to material flux research. 相似文献
12.
IMPACT OF URBANIZATION ON STRUCTURE AND FUNCTION OF RIVER SYSTEM——Case Study of Shanghai, China 总被引：3，自引：1，他引：2
YUAN Wen Philip JAMES YANG Kai 《中国地理科学(英文版)》2006,16(2):102-108
1INTRODUCTION Since the 1750s, promoted by Industry Revolution and the rapid development of science and technology, large-scale urbanization swept over the world. So far, it isestimatedthatmorethan60%oftheriversin the world have been experienced high levels of human modifica- tion (ALLAN, 1995). River systems have now become oneofthemostdeeplyhuman-affectedecosystemsinthe earth. To approach the impact ofhuman activitieson riv- ersystem as a multidiscipline topic has been a focus of res… 相似文献
13.
1INTRODUCTIONThewildlifehabitatlossandfragmentationhavebeenlinkeddirectlytointensivehumandisturbance.Manyecologistshavefocusedonanalysisofwildlifehabitatpatternchangeandconservationofsuitablehabitat.Ingeneral,landscapepatterniscloselylinkedtoecologi-calfunction,andnumerouspatternindiceshavebeencitedtodescribehabitatpatternandsuitability(FRANKLINandFORMAN,1987;HANSENandURBAN,1992;SCHUMAKER,1996;RIITTERSetal.,1997;PEARSONetal.,1999;CHENetal.,1999).WiththeapplicationofG… 相似文献
14.
Residents'perception and attitude towards tourism are essential to the resort development. It has become the important fields of study in foreign tourism geography and tourism sociology, whose research has produced some satisfactory results (DOGAN, 1989; JOHN and JOHN, 1993; BRUNT etal., 1999; ELIZABETH and BILL, 2000; DAVID and LAURA, 2001). Recently, related research in China has been under way. The life cycle, as the basic evolving law of resort, has also at-tracted much at… 相似文献
15.
《中国海洋湖沼学报》1982,(1)
In 1976 the authors published in Chinese three consecutive papers on the followinginterrelated subjects: (1) A φ(Z/l, x) rule of inorganicion exchange reactions in sea water(Kexue Tongbao 21 (5): 231—236), (2) application of the above rule to KCI solution the system of various inorganic ion exchanges (ibid. 21 (7): 334—336) and (3) application of the above rule to the marine geochemistry of the elements (ibid. 21 (12): 531—535). Since these papers are concerned with microcosmic approach to marine chemistry, we put them together in a paper to facilitate our fellow marine chemists abroad in exchanging ideas regarding the very interesting subject. 相似文献
16.
林昱 《中国海洋湖沼学报》2000,(2)
ＩＮＴＲＯＤＵＣＴＩＯＮＲｅｄｔｉｄｅｓｏｃｃｕｒｒｅｄｉｎＸｉａｍｅｎＨａｒｂｏｒｉｎ1986ａｎｄ1987.Ｔｈｅｌｏｃａｌｍａｒｉｎｅｓｃｉｅｎｔｉｓｔｓｃｌｏｓｅｌｙｏｂｓｅｒｖｅｄｔｈｅｓｅｒｅｄｔｉｄｅｓａｎｄｏｂｔａｉｎｅｄｍｕｃｈｕｓｅｆｕｌｄａｔａ(Ｚｈａｎｇｅｔａｌ.,1988;Ｄｕ,1989;Ｚｈｕａｎｇ,1991;Ｃｈｅｎｇｅｔａｌ.,1993).Ｂｕｔｓｉｍｕｌｔａｎｅｏｕｓｔｒａｎｓｉｅｎｔｗａｔｅｒｍｏｖｅｍｅｎｔａｌｗａｙｓｍａｄｅｉｔｄｉｆｆｉｃｕｌｔｔｏｉｎｖｅｓｔｉｇａｔｅｔｈｅｓｅｒｅｄｔｉ… 相似文献
17.
高抒 《中国海洋湖沼学报》1998,(3)
IamODUCTIoNInoIdertoestablishtheconceptofeqUilibriumforbeachprofiles,anuInberofproh-lemsmustbesolved,including:(i)pndoftheealstehceofeqUilibrium;(ii)definitionoftheshapeofaneqUilibriumcOaStalprofile;and(iii)evaluationofthePeriodoftimere-qUiredtoreachtheeqUilibritunstate(knownastheresPOnsetime).Forthefirstoftheseprohlems,areviewofpreviousinvestigationsandaSynhesisarepresentedelsewhere(GaoandCollins,1998).Accowhngtosuchtheoreticalconsidera-tions,threetwrsofeqUilibriurnInayoccurinnatllT… 相似文献
18.
Assessment on the commonweal values of wetlands 总被引：2，自引：1，他引：1
1THECOMPOSITIONOFWETLANDS'COMMONWEALVALUESThematterflow,energyflowandinformationflowgeneratedfromnaturalcapitalofwetlandsformecosystemcommonwealvalues.Theflowsaswellasartificialcapitalandlaborcapitalcommonlygeneratehumanitywelfare(COSTANZAetal.,1997).Generallyspeaking,thevaluesofwetlandsmaybedividedintothreetypes:directproductionvalues,valuesbroughtwithbiologicalfunctionsofwetlandsecosystem,andattributivevaluesaspartofsocialmakeup(BARBIER,1997).Thesevaluescannotallbeembod… 相似文献
19.
INTRODUCTIoNGlyOProtein'sroleinthevedousbioactivitiesofcelllifewasPaldcloseattentiontoinrecentyearsWhenanuInberofantitUInractiveglycoproteinswerefoundinsuccessionintheInarinemolusca(driS-etal-,l985;kisugiJ-etal.,1989).Thehighan-titumoractivityoftheglycoproteinfromPatinOPectenyeSSoensisofJaPaninterestedPharma-cologists(~S.etal.9l987).TheadductorofChamy(forecten)farmri,acultivatedshellfishdistributedrnaidealongthenorthemcoastofChina,isValuableandtastymdrineproductverypoPulartoman.T… 相似文献
20.
ImooUrnONTheedycarsePiddricofprawndiscaseintheprawnculturecoastalarmsofChi-naandsoutheastAsiaresultedinnoproduCtinnoutputfromrnostprawnpondsandheaVyerenoAnclosscyumbull,l994).Upt0now,devemeasimtopreventandtreatthediseasehavenotbopresental,althoughwaterenvironmentdeteriorationisconunn-lyknowntobethekcyfactorcausingthisdhase(Jiang,l994).ThispreliIninrystudyonthereati0nsbetweenprawndiseaseandfactorsthatseriouslyaffodwatetenvirDimtalquality(WaterteInPeratllre,waterexchangeamount,andarnountSa… 相似文献