In this paper , based on analysis of construction of underground roads in european , american and asian countries , as well as in metropolitans in china , the motivation of its construction is investigated and summarized , which offers a new idea and measure for solving the problem of redevelopment and traffic congestion in central areas of beijing 本文通过对欧美、亚洲以及我国一些特大城市修建地下道路的实例进行分析，从问题入手，探究其修建动因并进行总结，为北京、特别是中心城区解决城市再开发和交通拥堵等一系列问题提供一种新的思路和解决方法。
Changchun has outstanding priority and terms for tourism development as a national metropolis , provincial city and national firstly ratified excellent tourism city . the study on the development of changchun urban tourism has very important practical significance for studying urban tourism exploitation , doing well urban tourism planning and developing urban economy 长春市作为全国特大城市、省会城市和全国首批优秀旅游城市，具有发展旅游业得天独厚的优势和条件，其都市旅游发展的研究，对于研究长春都市旅游的开发、搞好都市旅游规划、发展都市经济都具有重要的实践意义。
Therefore , this paper has analyzed the good and bad of the two strategic thoughts the " focusing on developing extra - big city " and " focusing on developing small town " , raises a novel strategy as the new standpoint of rural reformation , and establishes mathematics model to make quantitative explanation 为此，本文分析了“着重发展超特大城市”和“着重发展小城镇”两种战略思想优劣，提出一种不同以往的战略思想作为农村改革的新切入点，并建立数学模型作定量解释。
Abstract : based upon central urban district in metropolitan , discussion on the basis and challenge of regional sustainable development , put forward that regional sustainable development should pay attention to create special features , take the prior projects on industrialization of technology , urban construction and community management as carriers , thus to further improve the sustainable development of comprehensive experimental area 文摘:以特大城市中心城区? ?上海市徐汇区为对象，探讨了实施区域可持续发展的基础和途径，提出区域可持续发展要注重塑造特色品牌，以科技产业化、城市环境建设、社区管理等方面的优先项目为载体，加以切实推进。
Then , the thesis appraises several city comprehensive parks in changsha ( megalopolis ) and xiangtan ( large city ) : martyr park and south suburb park in changsha , yu hu park in xiangtan with poe model aiming at city comprehensive parks , which reflects objectively using situation in comprehensive parks of large city with questionnaires , observation and random interviews , and analyzing the finding 然后,论文应用公园使用状况评价模式对长沙市(特大城市)和湘潭市(大城市)的三个综合公园(烈士公园、南郊公园和雨湖公园)进行了使用状况评估。通过对公园使用者和其行为活动进行了观察调查、问卷调查和随机访谈,比较分析调查结果,论文客观地评价了当前大城市综合公园的使用状况。
For lack of the stimulation of the large and medium - sized cities , chongqing , a cosmopolitan city with the classical dual economy ( the combination of great agriculture and industry ) should energetically develop small - towns in the light of local conditions , which can be the motive force of the development of the rural economy 重庆市是典型的二元经济结构，是大工业与大农业并存的特大城市，城镇体系当中缺乏大中型城市的带动，因而应当因地制宜地积极发展小城镇，通过小城镇带动农村经济发展。
This paper not only combines the normal research with empirical research but also combines the method of qualitative with the quantitative . taking the changchun , one of the metropolitan in china northeast , for example , it covers the sustainable ability and the bettering measures of human settlements of changchun on the basis of evaluating the index system of constructing human settlements through the theory of regional economics , the science of human settlements , sociology , ecological economics , the theory of sustainable development , and so on 本文用规范研究与实证研究相结合的方法,以定性-定量相结合,运用区域经济学、人居环境科学、社会学、生态经济学、城市生态学、可持续发展理论等相关原理,以我国东北地区内陆特大城市- -长春市为例,在构筑人居环境可持续发展能力评价指标体系基础上对长春市的人居环境可持续发展能力水平及其优化措施进行了探讨。
It ' s necessary to study on the non - optimal areas . adopting the method of theory combing with practice , this paper study the conception , characteristics , the causes of its coming into being of non - optimal areas , analyzes the factors influencing its development and its optimizing mechanism , probes the development theory basis and new development ideology . also , the paper classified the non - optimal areas as three types according to their leading driven force of tourism developmental ) economy - driven non - optimal areas ; ( 2 ) demand - driven non - optimal areas ; ( 3 ) society - driven non - optimal areas 同时，本文按非优区旅游发展的主导驱动力来源不同，将非优区分为： ( 1 )经济驱动型非优区：其驱动力源于发达的经济、与外界广泛的经济商贸联系； ( 2 )需求驱动型非优区：其动力源于毗邻的大中城市或特大城市居民频繁的近程旅游需求； ( 3 )社会驱动型非优区：其动力源于本地居民脱贫要求及当地旅游开发条件的改善。
