关于最低生活保障城乡一体化研究——以安徽省为例

目前,我国社会保障制度改革进入一个新的重要时期。围绕如何实现经济社会的全面协调可持续发展,安徽省已经开始在部分地区进行了社会救助管理城乡一体化实践。在取得了一定的积极成果的同时,也发现了漏洞和不足,尤其是城乡低保制度的失衡问题突出。进一步完善社会救助体系,推进城乡低保一体化建设,要结合区域特点,因地制宜,分阶段分步骤,逐步实现。要在探索建立城乡低保一体化架构、完善运行机制、加强过程控制、加强财政保障机制建设、城乡低保队伍建设等方面,进行改进和完善,进行全面系统的顶层设计和思考。     

基于ELES模型的中国城镇居民食品消费结构实证分析

基于ELES模型,利用2012年31个省份城镇居民家庭人均可支配收入和食品消费支出数据,对中国城镇居民食品消费结构情况进行研究,回归得到各类食品的边际消费倾向、收入弹性和自价格弹性。研究表明,城镇居民食品消费边际倾向中,在外用餐最高,其次为水产品、肉禽及制品;水产品、糕点类、在外用餐类的需求增长率高于收入增长率;蔬菜、粮食、肉禽及制品等基本食品消费的自价格弹性较低,水产品、糕点类、外出用餐的自价格弹性较高。     

Influences of in-stream habitat and upstream land-use on site occupancy of the Kanawha darter (Etheostoma kanawhae): A narrowly distributed species from the New River (Upper Kanawha Basin)

1. Freshwater communities are threatened by the conversion of natural landscapes for urban and agricultural purposes. Changes to land use may disrupt stream nutrient and geomorphological processes and reduce water quality, increase sedimentation, and decrease habitat heterogeneity eventually leading to species loss and decreases in ecosystem productivity. Endemic species are frequently at greater risk of habitat-mediated fragmentation and extirpation due to their constrained distributions.
2. The Kanawha darter (Etheostoma kanawhae) is an understudied fish endemic to the New River Drainage in North Carolina and Virginia, USA. To investigate the potential effect(s) of land-use change on Kanawha darters, naïve occupancy was modelled using instream habitat characteristics and upstream forest cover.
3. Generalized linear models revealed that instream habitat and forest cover are reliable predictors of Kanawha darter site occupancy. Specifically, models demonstrated that occupancy increased in reaches with reduced stream width, velocity, and bedrock substrate but higher concentrations of coarse woody material. Kanawha darter occupancy was also positively associated with the extent of forest cover in upstream catchments.
4. Although Kanawha darters are not currently considered imperilled, most populations occurred in isolated reaches separated by large sections of unoccupied habitat. Continuing ex-urban development in riparian zones is likely to be the primary threat to Kanawha darters and other endemic species in this catchment. Resource managers and stakeholders should preserve forest cover in headwaters and occupied tributaries and protect or restore riparian zones along the main-stem South and North Forks of the New River to preserve high-quality habitat and enhance connectivity among isolated Kanawha darter populations.
5. As human populations in montane regions continue to grow, there is a need to understand how land-use change affects endemic freshwater species. This study further supports the importance of retaining forest cover as an effective strategy for protecting and restoring populations of endemic fishes in high-gradient streams.

     

城市信息化建设软环境因素分析

城市信息化是中国城市发展的新主题与新动力,是解决目前我国城市发展中诸多难题的重要途径。城市信息化建设过程中会受到多个因素的影响,其中信息化建设规划、信息人才的培养、市民信息素养的提高以及信息政策、法规和标准的制定等都是直接影响城市信息化建设水平和质量的重要因素。     

以信息服务推动城乡一体化进程的思路探讨

信息作为与物质、能量同等重要的战略性资源,在城乡一体化的发展中起着越来越重要的作用。高校图书馆可凭借信息资源优势、人才优势、服务优势推送信息服务,推进城乡一体化进程。对推送信息服务的思路进行了探讨,提出了推进信息服务的途径。     

创新中介在都市农业基础知识设施中的SWOT研究

都市农业发展催生了农业创新中介服务市场,运用SWOT分析法,对创新中介机构在佛山都市农业基础知识设施中信息服务的优势、劣势、机会与威胁进行了分析,提出了在创新进程的基础上,对创新中介机构在知识创新信息服务中作为支持工具的作用进行系统分析的必要性。     

草坪绿地在城市园林绿化中的现状与发展对策

分析了草坪绿地在我国城市园林绿化中所处的地位以及目前存在的一些主要问题，并针对这一现象，对如何建设和发展城市草坪绿地，建立园林城市提出了一些相应的对策和措施。     

庭园园艺——城市市区发展都市农业的最佳模式

庭园园艺经济是都市农业重要、不可少的一部分,特别是城市市区发展都市农业的最好模式,目前我国还普遍没有认识到这一点。经过对美国、德国、荷兰等一些国家庭园园艺业的考察以及查阅有关文献、资料,阐述了在城市市区如何发展庭园园艺业,及其可以带来的生态效益、经济效益和社会效益。同时建议政府把发展庭园园艺经济融入到都市农业规划中。     

Comparison of sympatric freshwater turtle populations from an urbanized Sydney catchment

• 1. Australian freshwater turtles are widely distributed throughout the continent, and in each river catchment there are at least two taxa. In south‐eastern Australia Chelodina longicollis and forms of Emydura macquarii co‐habit within a waterway, although they have been shown to partition habitat within the water column in non‐urban bodies of water. Limited comparative data are available for the urban populations.
• 2. Within urban Sydney C. longicollis (eastern long‐necked turtle) and Emydura macquarii dharuk (Sydney short‐necked turtle) share habitat. However, in contrast with non‐urban studies of C. longicollis and other sympatric E. macquarii taxa, it was observed that the population profile of the two species was similar at all sites, and that C. longicollis were present in greater numbers than E. m. dharuk.
• 3. The continued degradation of preferred habitat, low recruitment, and potential competition from introduced turtles place both species in a precarious position.
• 4. The shallow, impounded waterways of the regulated urban bodies of water align more closely with the preferred habitat of C. longicollis than with that of forms of E. macquarii, which prefer deeper flowing waters or large wetlands adjacent to rivers. Emydura m. dharuk may be at greatest risk of extinction in urban areas.
• 5. Across urban Sydney, the low numbers of E. m. dharuk compared with C. longicollis may be due to the lack of mobility of E. m. dharuk such that individuals tend to be stranded in sub‐optimal habitat. In contrast, C. longicollis has a greater propensity for overland movement, and a preference for the ‘new habitat’ resulting from urban impacts on the associated waterways, and thus appears to be able to utilize these modified urban waters more successfully.

Copyright © 2008 John Wiley & Sons, Ltd.     

节约型城市绿地综合评价指标体系研究

初步建立节约型城市绿地综合评价指标体系,其体系主要包括绿化定量化指标、结构评价指标、景观评价指标、功能评价指标、资源节约评价指标5个方面。希望为以后城市绿地规划、设计、建设和管理提供一定的参考价值和研究基础。