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61.
通过对上海近30年的气候因子汇总分析,结合对上
海世博公园主要绿化树种生长状况调查和年度生物量计算,通
过典型相关性分析发现,极端高低温、强风和暴雨等5个气候
因子对树木的生长产生了不同程度的影响,有些因子严重阻碍
了树木的正常生长,成为障碍因子。经过10年的绿化实践验
证,上海世博公园对骨干树种的选择,以乡土树种为主,群落
结构较为稳定,且气候障碍因子对乡土树种的影响较小。在引
种外来树种时,采用气候相似植物区系法,结合植物耐寒、耐
热带图,把种源地划分为2个气候带和3个植物区系,并确定了
最南引种线,成功引种了红花槭等20种观花色叶乔木树种。 相似文献
62.
Yubing Sui 《新兴市场金融与贸易》2018,54(2):377-392
Using data from a large household survey, we investigate the size of China’s urban–rural gap in ownership of bank deposits, risky financial assets, and credit cards. We further examine the factors underlying the gap using decomposition analysis. Compared to their urban counterparts, rural Chinese are much less likely to own a variety of financial products. Both demand-side barriers and supply-side barriers to financial inclusion exist in China. More, we use instrumental variable analysis to address the endogeneity of the local supply of financial service. Above all, our study indicates that a large financial services vacuum in rural areas needs to be filled. 相似文献
63.
This study examines the relationship between economic policy uncertainty (EPU) and housing price at the macro-level in China as a developing country. The empirical evidence indicates that EPU has a leading effect on China’s housing market. In general, the housing market is prosperous when economic policy is stable and there is a positive relationship between housing price variation and EPU, which means housing market risk grows under unstable economic policies in this developing economy. Moreover, economic policy variation affects low-amplitude changes in housing prices. A variation of policy uncertainty enhances the risk premium of the housing market. By contrast, the level of EPU influences high-amplitude changes in housing prices, which reflects the trend of EPU dominating China's housing market. 相似文献
64.
In recent years, cities have become ever more attractive to middle‐class families. On the one hand, middle‐class families tend to withdraw into (often newly built) socially homogeneous middle‐class neighbourhoods. On the other hand, they are also known to move into inner‐city and socially mixed areas, thus triggering processes of gentrification. Academic literature has often denounced these housing choices as being either ‘separatist’ or ‘revanchist’, more broadly categorized as strategies of ‘middle‐class disaffiliation’. Although there is a grain of truth in these interpretations, the reality is certainly more complicated. In our research on middle‐class parents’ housing and neighbourhood choices as well as their patterns of neighbourhood use, carried out in each of the two types of residential area mentioned above, we have only very rarely found an explicit desire to draw boundaries that exclude those ‘beneath’ them. We rather argue that the housing choices and neighbourhood‐related activities of middle‐class family households are heavily influenced by the specific dilemmas the interviewees face as (working) urban parents. While a significant number of respondents worry about the social sustainability, justice and cohesion of urban society, they are also concerned about the future prospects of their children. Many find it difficult to reconcile these conflicting normative demands under the prevailing circumstances. 相似文献
65.
《Review of Income and Wealth》2018,64(2):332-356
There is considerable cross‐country variation in levels of household wealth and in wealth inequality. This paper assesses the extent to which these differences can be accounted for by differences in the distributions of households' demographic and economic characteristics. A counterfactual decomposition analysis of micro data from five countries (Italy, U.K., U.S., Sweden and Finland) is used to identify the effects of characteristics on component wealth holdings, their value and their distribution. The findings of the paper suggest that the biggest share of cross‐country differences is not attributable to the distribution of household demographic and economic characteristics but rather reflect strong unexplained country effects. 相似文献
66.
基于中国劳动力动态调查(CLDS)数据,运用广义有序Logit模型实证分析户籍、家庭禀赋和城市特征三类因素对城市家庭住房不平等的影响;运用夏普利值分解、Oaxaca-Blinder分解区分"努力"和"环境"因素、户籍歧视和禀赋效应的贡献。研究发现:户籍可解释住房等级不平等的54.2%;"努力"因素对住房水平起正向作用;在户籍间住房等级不平等中户籍歧视效应占主导,在住房面积不平等中禀赋效应占主导,外地户口居民住房水平低源于"环境"因素趋弱,农业户口居民则源于"努力"和"环境"因素叠加趋弱;由于生活成本效应占主导,城市规模和流动人口占比越大,居民住房等级趋低,而城市土地供给增长有助于提升住房水平。 相似文献
67.
通过分析影响城镇居民生活用水的因素,根据成都市城镇居民生活用水现状,采取城镇人口数﹑人均日生活综合用水量﹑人均可支配收入﹑水价4项具有代表性标量,通过平稳性检验和协整分析,采用科克伦—奥克特迭代法修正法建立回归模型。结果表明:①城镇居民用水人口数增加1%,用水需求则会上升0.943个百分点。②水价上升1%,居民对水的需求减少了0.016%,而居民收入增加同等的比例,用水需求则会上升0.232%。③城镇人口数对生活用水量的增长最显著作用,水价上涨对用水需求的抑制作用比收入增加对用水需求的拉动作用要小很多。为此为有效管理城镇居民生活用水,给出从完善阶梯水价、加强宣传、健全法规、推动节水技术等方面提出建议。 相似文献
68.
Jijiao Zhang 《Global Economic Review》2018,47(1):37-46
Abstract When we talk about “City Development, Preservation, and Hospitality”, we do not forget to discuss Chinese Old Brand Enterprises. These enterprises, labeled with distinctive historical character, enjoy high reputation and wide recognition, are very important parts of urban cultural preservation and economic development. Nowadays, China is called an emerging economy in the world. In fact, China has a long history of business tradition for thousands of years. Especially, Chinese Old Brand Enterprises are those that inherit Chinese traditional culture and bear unique techniques, products, and services in their operations. The urban system in most countries is influenced by market forces and enterprises. Cities that produce goods and services that are in demand and attract people to live in them will have faster growth than those that do not. 相似文献
69.
基于计划行为理论,构建城市轨道交通出行选择框架,依据长沙地铁出行SP调查数据,运用因子分析法,考量城市轨道交通出行幸福价值指数和出行幸福价值.结果发现:客观价值、主观价值、主观感觉、出行者特征和出行特征等功能因子决定地铁出行幸福价值;部分常用出行选择决定因素没有得到认同;出行幸福价值中部分客观价值与主观价值的认知存在不一致.鉴此,应在线路成网、改善交通接驳和最后一公里的方便性、增加发车频次、优化公共交通等级计费、传播城市轨道交通优势等方面提高出行幸福价值. 相似文献
70.
Neighbourhood planning has revealed a real demand for connecting local planning with new ways of producing much-needed housing in England. Analysis of the first adopted neighbourhood plans illustrates the desire for connecting housing to local needs, providing affordable accommodation as well as housing for older people, young families and households with disabled residents. This paper explores the potential of linking neighbourhood planning and community housing development and suggests how such models can co-exist with contemporary housing markets. 相似文献