首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
为实现垃圾卫生填埋处置对环境影响最小化,填埋场场址的合理选择至关重要的一步。笔者在专家调查的基础上,利用层次分析法(AHP),建立了以城市规划要求、交通运输条件、与城市的距离、环境保护条件、地质环境条件、建场条件为一级指标的垃圾填埋场选址评价模型,为武汉市的垃圾填埋场选址提供科学依据。  相似文献   

2.
The project of boilertransforming from using coal into using natural gashas been launched in mainly city zonein Chongqing in order to cut down atmospheric pollution .The article points out that the transforming is the best choice of improving contaminative status in mainly city zonein Chongqing and brings forward the aim of the transforming. At the same time, by surveying and classifiying the scale and the range of the transforming, the authors analyze the technical and economical feasibilityof the transforming, primarilyanalyze and research environmental benefit that comes from the transforming. In the end, the article comes out the conclusion that implementation of the project not only brings definiteeconomical benefit, but also greatly cuts letting quantity of atmospheric contamination, which has effectively allayed atmospheric pollution in mainly city zonein Chongqing.  相似文献   

3.
针对土地征收带来的失地农民问题,在对商丘城乡结合部具体情况典型调查的基础上,分析总结了当前困扰失地农民的就业难、补偿低、无保障以及少重视四大问题。并根据相关专家的合理建议和相关试点的经验总结,分项阐述了帮助失地农民就业、增加征地补偿金、建立社会保障体系、加强干部对失地农民问题的关注等四个方面的实施建议和对策。  相似文献   

4.
城乡收入差距的制度因素分析   总被引:2,自引:0,他引:2  
伴随着经济的持续增长,中国的城乡收入差距也在不断的扩大。收入差距拉大是市场经济的一般现象,可是由于国家的制度安排造成的城乡之间机会的不平等,则会加大城乡收入异化的程度,使社会分配状况不符合社会主义的公正原则。从构建和谐社会的目标出发,解决城乡收入差距过大的一个出发点就是还农民以国民待遇,形成一体化的劳动力市场,使农民有更多的进城机会,享有平等就业和公平的收入待遇。  相似文献   

5.
Starting from the fact of contemporary urban problemsexsiting universally,this paper traces back and analyses the theoreticalpoints of green city and its widespread and profound influence.Thispaper also expounds its benefit and enlightenment to us.To relax thesevere urban ecological and environmental problems,the author,consci-entiously drawing some modern urban planning thoughts such as gardencity,organic dispersion and systematical coordination and based on thepractice in the over all planning of Leshan city,presents a new conceptof green core city aiming to combine overall city planning with ecologyplanning and layout structure with improving urban living quality bylaying the city in several natural ecological circles.It will creat a higher urban living environmental quality.To satisfy demand of contemporarycities on a higher stage of development for environmental quality,it isnecessary to achieve the developmental goal of ecological city.This paperstates this point of veiws on the meaning and basic requirements for anecological city and stresses that it is important to raise the view ofunifying economical and social benefits with ecology and environment inurban planning and construction.  相似文献   

6.
Basing on the combing the Equivalent Differential Increment Theory(EDIT) with the Equivalent Polyhedron Method(EPM),the optimum real time economical adjustment of regulating peak load for each boiler about power plant is presented. The results are applying in the site and the economical benefit is increased obviously. The method is simply,and cuts the time.  相似文献   

7.
随着城市化进程的不断加快,各地“城中村”越来越多,“城中村”失地农民在市民化过程中的养老保险等社会保障问题也日显突出。完善城中村失地居民社会保障体系,应逐步建立“经济补偿、社会保障、就业服务”三位一体的新模式,政府部门应加快建立健全社会保障体系,构建一个类似于农村合作医疗模式的商业保险体系,既可以弥补目前社会保障的不足,也可以增强城中村改造资金的运用,实现改造资金的自我增值。  相似文献   

8.
陈钰 《中国农学通报》2011,27(4):483-487
城市湿地公园是城市生态环境的重要组成部分,在可持续发展理念下,从保护和改善湿地生态环境入手,充分发挥湿地综合功能,探索湿地公园生态旅游发展对策,以促进湿地公园建设和生态旅游可持续发展。立足于生态学、经济学、旅游学、社会学等学科交叉与整合的背景,运用归纳法、演绎法、调查研究法等方法,通过完善基础设施和城市旅游产业环境,提高湿地空间景观质量,在科学理论指导下发展湿地生态旅游将促进湿地公园建设和生态旅游可持续发展,使自然资源与人文资源协调发展,提升湿地公园的生态效益、社会效益和经济效益。科学地开展湿地生态旅游,利于湿地生态环境保护,促进生态城市建设,实现湿地综合效益最大化。  相似文献   

9.
2001~2002年在云南省保山市隆阳区示范推广粳稻新品种滇系4号7593.73hm2,平均单产11026.5kg/hm2,比对照当地主栽品种增产1479kg/hm2,增产幅度达15.49%;2a累计总产8373.23万kg,新增总产1123.11万kg,新增总产值2475.06万元;推广滇系4号平均每公顷获得新增纯收益3405.73元。  相似文献   

10.
城市滨水区生态现状及修复   总被引:3,自引:0,他引:3  
城市滨水区是城市绿色生态的重要组成部分。它在提供水源、绿地、改善环境的同时,还具有开放旅游娱乐、交通运输、文化教育等众多生态功能,对城市的发展具有着重要的生态、经济和社会价值。而随着社会的飞速发展、城市化进程的加快,人类对城市滨水区盲目地、不科学地建设引发了一系列关系到滨水生态破坏的严重问题。在环境越来越受到关注的现今,这一切逐渐引起了人们的高度重视。从城市滨水区景观规划不合理、防洪工程存隐患、污染物排放加剧、生物多样性减少等方面分析了滨水区的生态现状。并在此基础上从生态学的角度提出了植物修复、重构系统食物链、重建缓冲带及滨水绿化、实施生态护岸、增加物种重建群落等一些恢复滨水生态的途径。  相似文献   

11.
The economical construction and development of China can't be separated from the development of rural economy.Due to appearance and development of rural enterprises,surplus labor force of rural areas was accepted, agricultural economy had been developed and farmers' income enhanced. The traditional agriculture had been reconstructed. The construction and development of small cities and towns are connected with the development of rural economy and accelerate the development of city economy. The construction of small cities and towns can have congregation effect and scale benefit. The industry structure of country will be optimized in whole, management cost will be cut down, energy consumption will be reduced, pollution will be lowered and labor productivity will be increased. In this paper, the importance of town construction in economic development of China is elaborated. The achievement and problem in town construction are summarized. A method of gradual advance for town development is put forward and the problems that must be handled in town development are pointed out.  相似文献   

12.
新建平房仓磷化氢环流熏蒸杀虫试验   总被引:2,自引:0,他引:2  
文章主要论述磷化氢环流熏蒸中,仓房气密性与熏蒸浓度的关系、“动态潮解”产气法的简便性和经济性,并提出了在目前仓房条件下应采用的熏蒸浓度与密闭时间。  相似文献   

13.
增强城乡统筹协调发展能力 突出解决“三农”问题   总被引:2,自引:0,他引:2  
从不同层面描述了城乡差距、形成城乡关系失衡的危机意识。必须认识城乡统筹是生产关系必须适应生产力发展这一规律的必然体现,是资源优化配置的客观要求;造成城乡分化的主要原因是由于中国长期实行的城乡二元经济结构政策造成的;城乡统筹协调发展的国际经验值得借鉴;打破城乡分割体制、实现城乡关系平等、协调、融合、发展是增强城乡统筹协调发展能力、突出解决“三农”问题的主要措施。  相似文献   

14.
With the developing of the automobile industry, how to control the noise and vibration level of the products come to urgently for the auto factories during their developing and producing period. Finding out the main noise source and vibration source quickly, analyzing the noise and vibration signal effectively, contriving a noise descending algorithm reasonable and economical become the first and most important job for auto corporations. At the mean time it complicate the developing guide line of the noise and vibration testing system. With object oriented technology, we can develop the noise and vibration testing system in a short time and with a low cost. The object oriented technology emphasizes the circulation, exoteric and expandable of the codes. It enables us developing the system follow a flexible, integrable and economical procedure..  相似文献   

15.
磷化铝动态潮解膜下环流熏蒸法研究与应用   总被引:3,自引:0,他引:3  
利用动态潮解膜下环流熏蒸法在高大平房仓一次性投入磷化铝,进行实仓熏蒸试验。结果表明:仓内磷化氢浓度分布均匀,保持有效浓度时间长,杀虫效果良好;且具有省工省时、操作简便、经济实用和对环境污染小的特点。  相似文献   

16.
土地利用与区域协调发展实际上是分析和预测现有及未来人口、乡村经济和城镇经济发展趋势约束下的土地利用是否有利于生态格局的优化。利用清镇市土地利用详查及其更新数据与相关社会经济数据,运用GIS及相关统计方法和经验评估等,探讨了清镇市土地利用与区域协调发展框架,结果表明:(1)清镇土地利用动态体现为6种利用类型,但土地利用总体上仍以农业景观为主,没有形成城郊混合景观。驱动这一土地利用动态变化的主导因素主要有人口增加,城市化进程的加快,经济结构演进及土地不同用途下比较效益的差异;(2)5年间,清镇各乡(镇)区域经济发展的绝对差异和相对差异均呈扩大趋势但增幅均已放缓,即清镇区域经济发展朝极化方向偏移。几个经济发达地区,如红枫湖镇、站街镇、卫城镇和新店镇等,对于全市经济的影响越来越大。最发达地区与最落后地区的差距在不断增大;(3)土地利用与区域协调发展框架在满足当地城乡居民对农副产品生活的需要的同时,又协调了与经济发展的矛盾,但粮食安全和经济安全的保证又未有碍于生态环境的良性循环;(4)岩溶地区可持续发展必须协调好土地利用与区域发展的关系。  相似文献   

17.
Ecosystem services imply the natural environmental conditions and their effectiveness formed and sustained by ecosystems and ecological processes. From the view of city planning, in this paper, the evolution of the conception of ecological service-value and the relationship between the ecological service-value and city planning are reviewed. At the same time, it raised a conception about ecological space service value and negative ecological effect and an innovation proposal on city planning is presented.  相似文献   

18.
中国城市市花市树研究   总被引:1,自引:0,他引:1  
市花市树往往是一个城市的象征,反映城市市民的文化传统、审美观和价值观。调查了当前全国各省地级市及直辖市市花市树评选情况,分析了所选用市花市树的种类状况和特征及不足,发现292个城市中有167个城市评选了市树,209个城市确定了市花;所选的植物种的重复率较高,平均3个城市选用的市花或市树雷同,市花市树分布48个科,76个属,106种;市民对市花市树的认知不够,对市花市树的宣传不足,多数城市的市花市树缺少植物学名,主要以俗称为主等情况。剖析了目前这种状况的背景与原因.并为如何充分开发市花市树提出了建议。  相似文献   

19.
Differential rates of growth and decentralization are processes that characterized U.S. urban areas over the past three decades. This paper examines the determinants of growth in cities and suburbs during the 1970s, the 1980s, and the 1990s. The modeling approach adopted in the study allows for simultaneity between population and employment, and between cities and suburbs, while also taking into account a range of other explanatory factors. Results indicate that population and employment growth in cities tend to be jointly determined, but that growth of employment in the suburbs tends to drive growth of suburban population. Results also suggest that suburban and city growth are interrelated, but that the nature of these interrelationships varies over time: suburban growth promoted city growth during the 1970s and 1980s, while city and suburban growth were jointly determined during the 1990s. Other factors that consistently explain variation in city growth include demographics, population density, crime rates, and income inequality. Factors consistently explaining suburban growth include regional location and climate.  相似文献   

20.
合肥市生态足迹动态分析   总被引:7,自引:0,他引:7  
生态足迹作为度量区域生态可持续性的方法已经得到越来越广的应用,是城市可持续发展的重要指标。该文利用合肥市2000—2004年数据,分别计算了当地生态足迹、生态承载力、生态赤字以及万元GDP生态足迹。结果表明合肥市生态足迹呈上升趋势且大大高于当地的生态承载力,生态赤字现象严重。人均生态赤字由2000年的1.7041hm2/人增长到2004年的2.10108hm2/人。生态供需平衡依赖其他地区的生态输入。而万元GDP生态足迹则呈下降趋势,由2000年的2.545955减少为2004年的1.791977,表明在工业、经济的增长过程中对资源的利用率和效率有所提高。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号