3.3萬字                  75頁           包括外文翻譯原文和中文譯文

中文摘要

    隨著我國經(jīng)濟(jì)的發(fā)展，城市的空間也在迅速擴(kuò)展之中。城市空間的擴(kuò)張是在眾多因素作用下呈現(xiàn)數(shù)量越來越大、速度越來越快的趨勢。城市規(guī)模不斷的擴(kuò)大對城市的可持續(xù)發(fā)展和城市環(huán)境產(chǎn)生了較大的影響，也是當(dāng)前的研究熱點(diǎn)之一。

    本文在對國內(nèi)外同類研究成果收集和總結(jié)的基礎(chǔ)上，以xx市為研究區(qū)域，采用1988年-2013年7個年份的遙感影像數(shù)據(jù)作為主要數(shù)據(jù)源，對城市建成區(qū)邊界進(jìn)行提取，對xx市城市擴(kuò)展的動態(tài)情況和推動城市擴(kuò)張的因素作了研究和分析。本文主要對以下內(nèi)容進(jìn)行了研究：

（1）對提取城市擴(kuò)展信息的方法進(jìn)行研究。本文選取了監(jiān)督分類法、非監(jiān)督分類法和面向?qū)ο笕N方法，選擇分類結(jié)果較好的分類方法進(jìn)行城市信息提取。

（2）對xx城市空間擴(kuò)展特征進(jìn)行研究。本文從定量和定性兩個角度，通過擴(kuò)展強(qiáng)度指數(shù)、緊湊度、分維形數(shù)等指標(biāo)衡量城市擴(kuò)展，定量角度采用等扇分析法、緩沖帶分析法和行政區(qū)劃法研究xx城市空間擴(kuò)展方向和速度。定性角度在城市輪廓特征和城市質(zhì)心移動兩個方面研究城市空間擴(kuò)展特征。

（3）對xx城市空間擴(kuò)展的驅(qū)動力進(jìn)行研究。xx市城市擴(kuò)展的驅(qū)動因素主要有：自然地理環(huán)境、社會經(jīng)濟(jì)因素（人口和經(jīng)濟(jì)因素）、城市交通系統(tǒng)建設(shè)和政府規(guī)劃政策引導(dǎo)。

    經(jīng)過研究得出主要結(jié)論如下：（1）根據(jù)獲得的分類結(jié)果，認(rèn)為面向?qū)ο蠓诸惙椒ㄐЧ^好，其分類結(jié)果與事先勾畫的城市輪廓擬合度最佳。（2）擴(kuò)展方向方面，xx市主要沿長江向東北和西南向兩翼擴(kuò)展，南北沿著寧連--寧高高速公路走廊向兩側(cè)發(fā)展。擴(kuò)展速度方面，xx市1988年-2013年前期擴(kuò)展速度快，后期擴(kuò)展速度明顯減緩。從市區(qū)內(nèi)各個區(qū)擴(kuò)展情況上看，前期擴(kuò)展依賴于主城，后期則以新城區(qū)擴(kuò)展為主導(dǎo)，尤以江寧區(qū)擴(kuò)展幅度最大。（3）自然地理環(huán)境方面，長江和紫金山阻礙xx市向北和東發(fā)展，構(gòu)成了xx市沿長江向東北和西南向兩翼發(fā)展的模式。社會經(jīng)濟(jì)方面，xx市的城市擴(kuò)張對于人口增長不是十分敏感，但是經(jīng)濟(jì)的發(fā)展卻很大程度影響了xx城市空間擴(kuò)展。城市交通系統(tǒng)建設(shè)方面，城市交通網(wǎng)勾勒出了城市框架，其對于城市空間擴(kuò)展影響顯著。政府規(guī)劃政策方面，政府規(guī)劃政策一直調(diào)控著整個城市的發(fā)展變化，即“城市發(fā)展，規(guī)劃先行”。

關(guān)鍵詞：xx；城市擴(kuò)展；驅(qū)動力；遙感

 

ABSTRACT

 Along with the development of our country economy, the space of the city is rapidly expanding. The urban expansion under many factors in the quantity is more and more, faster and faster trend.  The expansion of the city scale has a greater impact on the sustainable development of the city and the city environment. It is also one of the hot spots in the research.

on the basis of collection and summary of domestic and foreign similar research results , this paper researched the dynamics of urban spatial expansion of Nanjing city and analyzed its promoting factors of urban expansion on extracting the construction of the city boundary by 1988-2013 seven years of  remote sensing image data as the main data source.

  This paper mainly studies the following contents

(1) study of methods of extracting city extension information.This paper selects the supervised classification, unsupervised classification and object-oriented classification method .By comparing and analyzing the results of three classifications,we choose the better classification results of classification method for urban construction with the information extraction.

(2) the research of Nanjing city spatial expansion characteristics . Proceeding from the angle of both quantitative and qualitative, we take expansion intensity index, compactness and divided as fractal dimension number of indicators to measure the city expansion. And quantitatively we use equal fan analysis, buffer analysis method and law of administrative divisions of Nanjing to study urban spatial expansion direction and speed characteristics.Then we study city spatial expansion characteristi-

cs from two aspects of city contour characteristics and city center moving.

(3) the study of the driving forces of Nanjing city spatial expansion. The main driving factors of Nanjing city urban spatial expansion are natural geographical environment, social and economic factors (demographic and economic factors), urban traffic system construction and government planning policy guidance.

  The main conclusions are as follows: (1) we considered object-oriented classification method is better according to the obtained classification results , and its construction area classification results have the quasi optimal degree with prior outline of urban construction. (2) On the extended  oriention, Nanjing city expands mainly along the Yangtze River to the northeast and southwest to the wings extended, secondly in the south-north oriention it expands along two sides of Expressway from Nanjing to Lianyungang and from Nanjing to Gaochun.On the expansion speed, the expansion of Nanjing city in early stage is fast and expansion slowed down in later stage.  On expanded situation of each district in the urban area ,in early stage, the urban area expansion is main part of the expansion, in latter stage, the expansion of the new city is dominant.Especially in Jiangning District, extended range is the biggest. (3) On natural geographical environment, the Yangtze River and the purple mountain hindered Nanjing city developing towards the north and east , it constitutes Nanjing to develop along two wings of the Yangtze River to the northeast and southwest . On social and economic aspects, Nanjing urban expansion is not very sensitive to population growth , but economic development greatly affected the urban spatial expansion in Nanjing.On construction of urban traffic system, the framework of urban traffic outlines the external contour of urban morphology and its influence on urban spatial expansion is significant. On government planning policy ,government planning policy regulation has directed the changes of the entire city, as the saying goes,"urban development ,planning in advance."

Key words: Nanjing; city expansion; driving force; remote sensing