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Functional zones in cities constitute the most conspicuous components of newly developed urban areas,and have been a hot spot for domestic and foreign investors in China,which not only show the expanse of urban space accompanied by the shifts both in landscape(from rural to urban)and land use(from less extensive to extensive),but also display the transformation of regional ecological functions.By using the theories and methods of landscape ecology,the structure of landscapes and landscape ecological planning can be analyzed and evaluated for studying the urban functional zones‘layout.In 1990,the Central Govermment of China declared to develop and open up Pudong New Area so as to promote economic development in Shanghai.Benefited from the advantages of Shanghai‘s location and economy,the government of Pudong New Area has successively built up 7 different functional zones over the past decade according to their functions and strategic goals.Based on the multi-spectral satellite imageries taken in 1990,1997and 2000,a landscape ecolgy analysis was carried out for Pudong New Area of Sanghai ,supported by GIS technology.Green space(including croplands )and built-up areas are the major factors considered in developing urban landscape.This paper was mainly concerned with the different spatial patterns and dynamics of green space,built-up areas and new buildings in different functional zones,as influenced by different spatial patterns and dynamics of green space,built-up areas and new buildings in different functional zones,as influenced by different functional layouts and development strategies.The rapid urbanization in Pudong New Area resulted in a more homogeneous landscape.Agricultural landscape and suburban landscape were gradually replaced by urban landscape as the degree of urbanization increased.As a consequence of urbanization in Pudong,not only built-up patches,but also newly-built patches and green patches merged into one large patch,which should be attributed to the construction policy of extensive green space as the urban development process in Pudong New Area.The shape of green area of 7 functional zones became more and more regular because of the horticultural needs in Shanghai urban planning.Some suggestions were finally made for the study of future urban planning and layout.  相似文献   
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1IntroductionRecentlyinJapan,theriverspaceinurbanareasischangingintoriverparks,riveropenspaceandnatureorientedbank.Consequen...  相似文献   
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Purpose  

The purpose of this study was to evaluate the influences of volatile organic compounds (VOCs) emissions on hazardousness and photochemical reactivity and to propose efficient VOCs abatement strategies.  相似文献   
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1IntroductionLandscapeecologyfocusesonstructure,function,andchangesinlandscape(Forman,1986).Heterogeneityinlandscapesisshaped...  相似文献   
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This study investigate the relationships between genomorphometric properties and the minimum low flow dischare of undisturbed drainage basins in the Taman BukitCahaya Seri Alam Forest Reserve,Peninsular Malaysia.The drainage basins selected were third-order basins so as to facilitate a common base for sampling and performing an unbiased statistical analyses.Three levels of relationships were observed in the study.Significant relationships exised between the genomorphometric properties as shown by the correlation network analysis;secondly,individual geomorphometric properties were observed to influence minimum flow discharge;and finally,the multiple regression model set up showed that minimum flow discharge(Qnub)was dependent of basin area(AU),stream length(LS),maximum relief(Hmax),average relief (HAV) and stream frequency(SF).These findings further enforced other studies of this nature that drainage basins were dynamic and functional entities whose operations were governed by complex interrelationships occurring within the basins.Changes to any of the geomorphometric properties would influence their role as basin regulators thus influencing a change in basin response.In the case of the basin‘s minimum low flow,a change in any of the properties considered in the regression model influenced the “time to peak”of flow.A shorter time period would mean higher discharge,which is generally considered the prerquisite to flooding.This research also conclude that the role of geomorphometric properties to control the water supply within the stream through out the year even though during the drought and less precipitations months .Drainage basins are sensitive entities and any deterioratons involve will generate reciprocals and response to water supply as well as the habitat within the areas.  相似文献   
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1IntroductionUrbanizationisabigproblemnotonlyindevelopedcountriesbutalsoindevelopingcountries.Thisisamodernandurgentafairinth...  相似文献   
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The objective of this study was to elucidate characteristics associated with rivers by classification of major rivers in Japan into sereral types based on riparian conditions.As the results of principal compoent analysis(PCA) with use of parameters reflecting forms and artificial alterations of respective rives,four major components such as“comprehensive riparian size”,“intactness of water front”,“continuity of streams” and “silmplicity of landform in river basin”were extracted.Subsequently,cluster analysis was performed based on principal component scores,leading to succesful classification of major rivers into 6 types.These findings disclosed that(1) the extracted principal components provide effective viewpoint for classification of rivers;(2) distribution of respective classes indicates are properties;and (3) the emplyed quantitative procedures were found effective for classification of major rivers.  相似文献   
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Kikuchi  A.  Nakagoshi  N.  On  Y. 《环境科学学报(英文版)》2003,15(2):279-283
IntroductionThepeatlessmire(Wolejko ,1986;Fig .1a)isdecreasingextensivelyduetotheabandonmentoftraditionalmanagement,inflowofthewastedwater,fire,mowing ,reclaimingandotherartificialimpactsinthemodernlandscapeofsouthwesternJapan(Fujiwara ,1979) .Mireofthistypeisnow…  相似文献   
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